Holley date codes

Holley Carburetor Numerical Listings Carb. Primary & Primary Secondary Primary Secondary Primary Carburetor Model CFM Renew Trick Secondary Main Main Jet Metering Metering Primary Discharge Part No. No. Kit Kit Needle Jet or Plate Block Block Power Valve Nozzle & Seat Size 0-1848-1 4160 465 37-119 37-933 6-506 122-57 N/S N/S 34R9716-3 125-85 .025

Holley date codes. Shoppers save an average of 13.6% on purchases with coupons at holley.com, with today's biggest discount being 20% off your purchase. Our most recent Holley promo code was added on Apr 23, 2024. On average, we find a new Holley coupon code every 60 days.

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Grab the latest coupons, promotion codes and savings tips for summitracing.com. ... Expiration Date; $20 Off: Up to $100 off on your Summit Racing order!-10% Off: Up to 10% Off w/ Code-5% Off: Score up to 5% off with coupon-$60 Off: Save $60 Using Promo Code-Jan 19, 2017 · It's like a "VIN" for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list number typically is four to six digits long and may or may not have a suffix number behind it. The date code will be right below it. This carburetor was made by Holley , The Holley Brothers Company was started in 1905 in Detroit Michigan then became the Holley Carburetor Co . It is a H4-4150 . This carburetor has a part number of R4296 LIST 4296 and used on 850 CFM . Check here for specific Muscle car Info. Referenced by ; Holley R4296 or LIST 4296.2old2fast. 2893 posts · Joined 2009. #5 · Oct 20, 2010. Thier will be 2 numbers on the air horn normally, 1 is a date code the other is a LIST number,date code is useless 'cause it doesn't say which decade, list can be referenced through various sources, post it and I'll bet someone will have an answer for you. dave.Customization - Renaming Warning. To open the customization menu, tap or right-click the gauge or warning. Modification options are nearly endless, users can adjust the text and font size under the "Label" category. For larger warnings, a font size of around 150 is recommended. In this example, the modified text reads "Low Oil Pressure".

Fuel Injection, Carburetion & Fuel System - Can someone decipher Holley date codes? - Hey there, hi there, ho there! Can anyone tell me what a 944 after the list number on a Holly 4 barrel with a list # of 4053 would be? Thanks!:-winkAgain a service part with a date code of 142, or 1971, April, 5th week. Holley 3230 4-barrel carburetor dated 502 - 5=1965, 0=October, 2=2nd week. Original equipment for 1966 …date: 11-6-13 needle & seat cross reference if your old n&s is stamped with you will use size style available separately as # contained in kit # "h" .097 steel 6-500-2 "d" .097 steel 6-501-2 "f" .120 steel 6-502-2 "h" .110 viton adj. 6-504 85r8515k & 85r8515k-2Holley still offers original list number carburetors for highly collectible muscle cars. Over time these carburetors have been nearly impossible to find, but no longer. These are NEW nearly exact reproductions of the originals. List Number 0-4792 is the 350 CFM "Center" Six Pack Carburetor that Originally came on 1970-71 Chrysler 340 CID Engine Applications with an Automatic Transmission ...Holley uses the jullien date code, 1908 corresponds to the 190th day of a year ending in 8. After every major design change Holley changes the number after the dash (-), hence this carb was manufactured after their 7th revision. Last I saw they were the double pumpers were -9, but that was a couple of years ago.if the carb has a 4 digit date code it is not made is the 1960's and is worth less than a 60's made Holley 715. Four digit date date: first number is the year made, last three digits are the day of the year. ex: 7122 = carb made in 1977 (or 1987, or 1997, etc) and the 122nd day of the year. Z.I have read conflicting information on what date codes were used for original and replacement Holley carbs during the 70's. I just purchased a carb that the seller stated up front is a factory replacement carb and not to be confused with a correct date coded carb that can be used on a numbers matching car. The stamping on the air horn reads ...item 3 Vintage Holley Economaster 450 CFM 4 BBL CARBURETOR 7455 Date code 0917 GM Chevy Vintage Holley Economaster 450 CFM 4 BBL CARBURETOR 7455 Date code 0917 GM Chevy. $119.99 +$10.00 shipping. item 4 Carter AFB 4758 4761 400/500 CFM 2X4 Dual Quad Carburetors 4758S 4761S S Carter AFB 4758 4761 400/500 CFM 2X4 Dual Quad Carburetors 4758S 4761S S.

Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... Date code: 20180830 FW Ver: 4.0 build 110 Profile #1 TPS Calibrated: Yes HEFI type: HP And other info on GCF file and time stamps ...Our date code converter is here to help. It supports numerous formats mentioned in our How to Read Expiration Dates article and their variations. Simply enter the code (like 052124 or 13156) into the input below and click the button to see the converted date. Convert.The top of the stamp shows the GM part number 3886101E1, the midportion is the Holley list number, 3247. The DATE CODE which you are asking about is the bottom area, on mine it is 612. If yours has a 4 digit stamp there, it is not original, it is a service replacement built later. The 3 digit code as in my 1966 Holley identifies 6 (the year ...Dec 02, 2017 #1. I've got a 3310-2 with a date code of xxx4. I'm assuming 1974 or 1984, but I cannot seem to find any information on what years the "-2" version of the 3310 was in production. Does anyone know when the "-3" carb replaced the "-2"? Just curious. tuner. 2,111 70. Site Admin. Dec 02, 2017 #2.Zip Code. Email. Product Information. Part Number. Purchase Date. Install Date. Place Purchased. I would like to receive updates about products and services, promotions, special offers, news and events from Holley, Inc. ... news and events from Holley, Inc. Submit. The current list of products that are eligible for our 1 Year Extended Warranty ...

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Holley Carburetor Numerical Listings Carb. Primary & Primary Secondary Primary Secondary Primary Carburetor Model CFM Renew Trick Secondary Main Main Jet Metering Metering Primary Discharge Part No. No. Kit Kit Needle Jet or Plate Block Block Power Valve Nozzle & Seat Size 0-1848-1 4160 465 37-119 37-933 6-506 122-57 N/S N/S …1702 posts · Joined 2006. #1 · Feb 28, 2009. Have a guy trying to sell me an original Holley DZ carb but I'm not sure the date code is correct. Here are all the numbers on the choke horn: 3923289-DZ. LIST-4053. 0523. Correct or service replacement? '74 with roller 454, TH400 3K stall and Ferd 9 w/ 4.20s". Our date code converter is here to help. It supports numerous formats mentioned in our How to Read Expiration Dates article and their variations. Simply enter the code (like 052124 or 13156) into the input below and click the button to see the converted date. Convert. 600: 37-119 37-933: 6-506 122-66: 134-9134-128: 125-65 0.025: Plain 108-83-2: 108-89-2 108-90-2: 108-27-2 134-101: 134-105 112-20: 1-1/4 1-5/16: 1-9/16Holley carburetor identification numbers are typically stamped on the side of the airhorn. If the carburetor was factory issued, it may have multiple numbers, including the manufac...

Holley is home to the top automotive performance brands including Flowmaster exhaust, MSD Ignition, Holley EFI, Hurst Shifters, Accel plug wires, Hooker Headers and many more.Below the Holley list number is the three-digit date code, which can be deciphered as follows: The first number designates the year of manufacture, represented as the last digit of the calendar ...Holley C9AF-9510-U 4609 carburetor 384 date 1969 Mustang Cougar 428 cj cobra jet. Opens in a new window or tab. Parts Only. 5.0 out of 5 stars. ... Holley 4-Barrel Carburetor 2668 Ford Galaxie 427 410 Mercury Q-Code 1963 1964. Opens in a new window or tab. Parts Only. 3.5 out of 5 stars.They had 450 cfm 4 bbl carbs to be used with the intakes for best mpg. If you could go from 12 to 15 mpg you were happy. Some folks really drove @ 55 mph, they were looking for max mpg at low rpms on the freeways. Some claim to be getting 20 plus mpg.This whole search started when I tried to identify a Holley 2300 2V carb sporting a LIST - 8641. I can tell by some of it's features that it was an OEM carb on something, just trying to positively identify it. It's got a 1342 date code so I'm guessing it's the 134th day of 1962 or 1972. If anybody has a link to the 2300 LIST numbers index I'd ...OK, let's start posting numbers on stock holley carbs. If you have the original Mustang/Capri Holley carb in your car, please post the codes from the: 1. blue tag AND 2. from the air horn AND 3. the build date on your car's door tag! Also, if anyone can tell me what the 4 digit number on the air horn means or can shed any light as to how these carbs were put together and their date codes ...For a correct carb date, you need to look for 3 digit that start with a 5. So if your car's birthday for instance March 2nd, 1965 then you want a carb dated 531 (5=1965, 3=March, & 1=1st week) or earlier. If you are concerned with NCRS then you look for something up to 6 month earlier than the build date is normally acceptable.05. There are three different numbers to know on a Holley carb used as OEM equipment on a vintage Mustang or Shelby: the Ford or Shelby part number, the Holley List number, and the date code. This ...Holley Carburetor Numerical Listings Carb. Primary & Primary Secondary Primary Secondary Primary Carburetor Model CFM Renew Trick Secondary Main Main Jet Metering Metering Primary Discharge Part No. No. Kit Kit Needle Jet or Plate Block Block Power Valve Nozzle & Seat Size 0-1848-1 4160 465 37-119 37-933 6-506 122-57 N/S N/S …model 885 - number on plate, mounted on air horn body. number may also be found on tag as shown here model 1909 part number stamped on throttle body flange or

The date code is located on the Left hand side of the pistol and is represented by two letters. Below is the date coding chart. The letter will correspond with the number. A - 0 ... Below is the date coding chart. The letter will correspond with the number. A - 0 B - 1 C - 2 D - 3 E - 4 F - 5 G - 6 H - 7 I - 8 K - 9 ...

The Holley manufacturing date code format is Year, month, week. from my research I discovered the year date is the actual year Holley made the carb. This is based and verified on the very first carbs being produced. The Holley 4053 part number 3923289-DZ began production for the 1968 Z/28, L78, L89, & the L72.When the code extends to four or five digits, the initial one or two digits denote the year. So, 3156 would be read as June 5, 2023, while 22156 signifies June 5, 2022. To swiftly decode the three digits representing the date, you can refer to this helpful Julian calendar.01-14-2015, 09:52 PM. There are no visual indicators without a laptop or a Holley Digital Dash. If certain sensors failed it would just run like crap, others it may not run at all, and some would make little to no difference if the tune was spot on. You can create a warning output that can be triggered by numerous things.Re: 1969 L78 3959164-GE Holley date code. 1A3 = 3rd week of November, 1971. It's a service replacement.Trying to determine to continue to use this Holley Carb currently on my 1966 K-code or to rebuild by original Autolite 4100 C40F AL for use. Holley Carb info. Here are several different numbers I pulled off of it: casted with 6R 3760 B on the top. Stamped with "LIST-4776-1 2455".2300-EG Diagram. 2380-EG Diagram. Holley 5200 5210 5220 6500 6510 6520. Parts Page. Diagram. Holley 2280 6280. Parts Page. Diagram. Holley 4150 4160 4165 4175 4180 4190.8 Jun 2021 ... ... date code. 4. In stock configureation, at 4000 rpm at 90 percent ... Holley. • Power valves are common to Holley but some caps can interfier ...Holley's reproduction units are extremely close to the original units and each still look like a 4150 Holley carb cut in half. ... Original list number stamped with current date code; No choke for unobstructed airflow on 500 cfm outboard carbs; Remote choke for easy hook up original vehicle on 350 cfm center carb;Bill Tichenor. 358 Posts. An Article About. Carburetor Installation and Tuning. Video. carburetor overview. video. A complete overview and explanation of the components and operation of the Holley 4150 vacuum secondary carburetor.

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Grab the latest coupons, promotion codes and savings tips for summitracing.com. ... Expiration Date; $20 Off: Up to $100 off on your Summit Racing order!-10% Off: Up to 10% Off w/ Code-5% Off: Score up to 5% off with coupon-$60 Off: Save $60 Using Promo Code-327-4. 350-L79. H.D. 3-speed or 4-speed. A total of 116,551 6-cyl engines were installed; 49,608 194cid and 66,943 230cid engines. A total of 330,813 8-cyl engines were installed; 209,338 283cid, 46,230 327cid, and 75,245 396cid engines. There is no breakdown of engine type or size by specific series/model other than 6-cyl. vs. 8-cyl.The top of the stamp shows the GM part number 3886101E1, the midportion is the Holley list number, 3247. The DATE CODE which you are asking about is the bottom area, on mine it is 612. If yours has a 4 digit stamp there, it is not original, it is a service replacement built later. The 3 digit code as in my 1966 Holley identifies 6 (the year ...I recently bought a used MSD 8546 Pro-Billet distributor. It has a C7 stamped in the body. Is there a way to find out how old it is from this stamping? It also has aluminum spacers that hold the cap down. Which I don't see on the newer version. Thanks, Shane.C1 & C2 Corvettes - WTB Date code Holley for 327 L79 1967 - Hello friends --- need help once more ... I have the whistle back through the carb at idle - goes away on acceleration - happens when motor is at operating temp - 327 L79 67 date code for Feb of 67 Im thinking just to go ahead and buy a replacement (holley)...HOLLEY 4557 CARB 983 DATE 1969 1970 454 LS6 396 L78 CHEVELLE 396 L78 CAMARO NOVA IT LOOKS PRETTY GOOD MAY OF BEEN REBUILT BEFORE. ... * Estimated delivery dates - opens in a new window or tab include seller's handling time, origin ZIP Code, destination ZIP Code and time of acceptance and will depend on …The format is as follows:YDDDWhere: Y is the last digit of the year. DDD is the day of the year (001 to 365) Decode the year: The last digit of the date code represents the year. For example, if the last digit is "3," the carburetor could have been produced in 1973, 1983, 1993, or 2003. You may need to consider other factors, such as the ...Med.Rise INTAKE. Aftermarket replacement. Holley list this carb as "1968 Shelby-American 289 Engine". Ford and Mustang Holley 4150 carburetor. Holley casting numbers decode and identification. Correct list numbers and correct date codes for all holley carburetors. Ford Mustang Galaxie Fairlane Torino Mercury Cougar Cyclone Boss Applications.Steve R. 6267 posts · Joined 2000. #3 · Nov 29, 2013. The 1908 directly under the list number is the date of manufactur. Holley uses the jullien date code, 1908 corresponds to the 190th day of a year ending in 8. After every major design change Holley changes the number after the dash (-), hence this carb was manufactured after their 7th ...Topic: Holley date codes: Fastymz Moderator . Posts: 20708 From: Reno Nv USA M&M#1240 Registered: Apr 2001: posted 06-14-2004 03:21 PM Does anyone know how to read Holleys date codes on the carbs ?-----SCOOP. oddly obsessed with big scoops on little Mustangs. 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. ...The numbers stamped into the choke tower are as follows: 3849804 List 2818 302. The 3849804 is the GM part number. The List 2818 is the Holley number and the 302 is the date code. The Holley List 2818 carburetor was used by GM on 1964 Corvettes with the 327/365HP engine. The 302 date decodes as the 2nd week of October, 1963. ….

Find many great new & used options and get the best deals for Holley 750 Carburetor 3310-3 Date Code 1409 at the best online prices at eBay! Free shipping for many products!2702 posts · Joined 2009. #2 · Feb 23, 2012. carb date 0502. according to "holley carb date code". 050 is feb. 2= 1962,, 1972. 1982, 1992. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.Trying to determine to continue to use this Holley Carb currently on my 1966 K-code or to rebuild by original Autolite 4100 C40F AL for use. Holley Carb info. Here are several different numbers I pulled off of it: casted with 6R 3760 B on the top. Stamped with "LIST-4776-1 2455".Holley 3837 Chevelle SS Carburetor 1967 396 date code 6A3. The number above that in the picture is the General Motors id number 3908957-EJ. This Carburetor has the original Holley color. All of the steel hardware has the original factory plating. Very hard to find with this late 1966 date code for a 1967 car.0127 - Date Code. Month and Day. 0127 - January 27. CPJ - Type Designation. CPJ - 454ci 270hp, automatic transmission. Engine Number Example: 12S500001 1 - Division. 1 - Chevrolet; 2 - Model year. 2 - 1972; S - Assembly Plant Designation. S - St. Louis; 500001 - VIN Sequential Serial NumberHolley promo codes, coupons & deals, May 2024. Save BIG w/ (44) Holley verified discount codes & storewide coupon codes. Shoppers saved an average of $13.13 w/ Holley discount codes, 25% off vouchers, free shipping deals. Holley military & senior discounts, student discounts, reseller codes & Holley.com Reddit codes.C1 & C2 Corvettes - Holley date code - Hello newly registered to the site but I have been using it and all the technical knowledge that is available here… thank you very much! From my research I have an early (September) St Louis 1965 conv. 327/350hp. The car appears very original under the hood but I am learning how...The four digit date code began about 1972 so your assumption of 77,87 is valid. I believe Holley discontinued the 2818 in the 90s but recently has resumed reproduction. The carb was installed at the assembly plant in St Louis so any date within the 6 months prior to your cars DOB is NCRS correct. The date code was in the form year/month/week.Our date code converter is here to help. It supports numerous formats mentioned in our How to Read Expiration Dates article and their variations. Simply enter the code (like 052124 or 13156) into the input below and click the button to see the converted date. Convert. Holley date codes, This is for One Good Used Original Holley Carburetor PN 3810 with GM# 3906631-DA, correct for the Chevrolet Corvette produced in 1967 with 327 CID and 300 or 350 HP. The date code of 8 B 3, (3rd Week of February, 1968) would suggest this is a service dated carb. It is rated at 585 CFM and has a vacuum secondary and choke that operates off of …, Ken -- Thanks for posting the engine date decode sheet for the 430 engine. I'm trying to document the date code & part numbers for a Holley that The Old Cars Manual Project lists as being original for the 430 engine. Numbers stamped into the choke horn as follows: 5752426 List 1850 062, This whole search started when I tried to identify a Holley 2300 2V carb sporting a LIST - 8641. I can tell by some of it's features that it was an OEM carb on something, just trying to positively identify it. It's got a 1342 date code so I'm guessing it's the 134th day of 1962 or 1972. If anybody has a link to the 2300 LIST numbers index I'd ..., Fuel Injection, Carburetion & Fuel System - Can someone decipher Holley date codes? - Hey there, hi there, ho there! Can anyone tell me what a 944 after the list number on a Holly 4 barrel with a list # of 4053 would be? Thanks!:-wink, The date code consists of four numbers. The carb date does not go by the Chrysler 10,000 day calendar. The first three numbers indicate the day of the year and the fourth number indicates the year. Therefore, a date code of 3619 from a 1970 440 Holley carb indicates the 361st day of the year (December 21st). The 9 indicates the year 1969 ..., 1. Date codes on Parker Pens. Updated Oct 2011. In mid 1934 Parker began marking most pens and pencils with a date code, both the barrel and the nibs were marked, but lacking a date code doesn't necessarily mean that the pen was made pre-1935, since many imprints have been worn off with use. The first date codes, found for example on the Vacumatics, consists of two digits, the first one ..., The carb was installed at the St Louis plant so a typical correct carb would be dated about 2-4 weeks prior to the cars assembly date. Holley date codes went to 4 digit code around 1970 Last edited by Donald #31176; 03-07-2009 at 12:25 PM ., EFI - Fuel Injection. Carburetors. Carburetor Components. Fuel Pumps Regulators and Filters. Also in Air & Fuel Delivery. Air Cleaners. Air Scoops. Cold Air Intake. Fuel System Kits., Holley list 3310-1 date 0743Holley aa-1, 2100 and 2110 exploded diagrams Carb dating: autolite and holleyHolley numbers technical squirrel oct. Appropriate holley carburetor date code.Holley date list corvetteforum Holley carb identification number date sketchy pit avoid mods stop need list hotrod partHolley 2300 tech specs. Check Details, Heil® & Heil-Quaker®. How to determine the date of production/manufacture or age of Heil® & Heil-Quaker® HVAC Systems. The date of production/manufacture or age of Heil® & Heil-Quaker® HVAC equipment can be determined from the serial number located on the data plate., Video. Sniper EFI Videos. Someday you may need to take a data log from your Sniper EFI system. Today I'm going to discuss two different ways you can take a data log using your 3.5" LCD and the Sniper PC software. How to open them using the Sniper software and how to e-mail them to somebody for review. author., Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... Date code: 20180830 FW Ver: 4.0 build 110 Profile #1 TPS Calibrated: Yes HEFI type: HP And other info on GCF file and time stamps ..., Ken -- Thanks for posting the engine date decode sheet for the 430 engine. I'm trying to document the date code & part numbers for a Holley that The Old Cars Manual Project lists as being original for the 430 engine. Numbers stamped into the choke horn as follows: 5752426 List 1850 062, Note the date code of 072 indicates it is a dealer service part since the date code is 1970, July, 2nd week. Another 3310 Holley (GM number 3878261EH) used on the 1965 396 L72 (Z16) engine. Again a service part with a date code of 142, or 1971, April, 5th week. Holley 3230 4-barrel carburetor dated 502 - 5=1965, 0=October, 2=2nd week., This carburetor was made by Holley , The Holley Brothers Company was started in 1905 in Detroit Michigan then became the Holley Carburetor Co . It is a H4-4150 . This carburetor has a part number of R4296 LIST 4296 and used on 850 CFM . Check here for specific Muscle car Info. Referenced by ; Holley R4296 or LIST 4296., Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - Help ID Motorcraft carb - I want to rebuild my Motorcraft (by Holley) carb. But I want to find out the CFM, etc. The list number is 50264 with a date code of 3494. The carb ID # is E5TE-9510-ZA. The tag reads E5TE ZA ; A4M12. It is a square bore 4 barrel with vacuum..., The stamped 'code' is in the format 'ccc-nnne' where ccc is a one, two, or three digit code representing the company for which the carburetor was produced (ie 2=Ford, 4=Chrysler, 7=Buick, etc.); nnn is a one, two, or three digit number representing the next sequential number of carburetor sold to the company in 'ccc'; and e is a ..., dyno jonn. 4759 posts · Joined 2002. #2 · Jul 16, 2012. E1 is the number that the assembly line workers looked for when they need that carb to go on the engine that was supposed to get a 3247 carb. Shorter numbers were easier to remember than 3886101 or 3247. Jon N. ~ The person who doesn't listen to the media is the best informed., Apr 2, 2014 · I have a question about the date coding on a Holley 600 cfm carburetor - C8OF-9510-D. Would a date code of 7B4 be correct for a 1968 Cougar XR7 GT produced on 12/19/1967? I understand that 7B4 means the 4th week of December 1967. Logic seems to indicate that the 19th would be the 3rd week of December using Sunday as the first day of a week in the count. Thanks! Steve , Belts. 026x. «02» = February (01-12 = Jan-Dec) «6» = 196 6. x = Unknown (Poss A-Z may appear here, or blank (?)) York A/C Compressor. How to Read FoMoCo Date Codes Original Ford glass, sheet metal and other parts were usually date coded in one of several formats. To perform the most accurate., holley carb date code? Jump to Latest Follow. 2K views 5 replies 4 participants last post by Jim Mac Nov 25, 2021. Jim Mac Discussion starter. 12597 posts …, Decoding Ford Carburetor date codes . Autolite carburetor use a 3 or 4 digit date code system. Starts with the year on left, a letter in the middle for the month and a 1 or 2 digit number on the right depicting the day of manufacture. this tag is typical of an Autolite 4300 carburetor, C8ZF-A with date code 8B13. , Topic: Holley date codes: Fastymz Moderator . Posts: 20708 From: Reno Nv USA M&M#1240 Registered: Apr 2001: posted 06-14-2004 03:21 PM Does anyone know how to read Holleys date codes on the carbs ?-----SCOOP. oddly obsessed with big scoops on little Mustangs. 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. ..., date code that will contain no more than four (4) digits. See Figure 1 below. Figure 1 DISASSEMBLY: Rest the carburetor on a repair stand to avoid damage to the throttle plates during the renew procedures. Use the exploded view, for the model of carburetor you have, as a guide and follow the numerical sequence in general to disassemble unit far, Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an answer or timing on an answer. ... Join Date: Dec 2021; Posts: 8; Share Tweet #1 Sniper backfire at intake during acceleration. 12-04-2021, 02:18 PM ..., You won’t realize you’re dating a narcissist. Narcissists are skilled at making people like them. They can You won’t realize you’re dating a narcissist. Narcissists are skilled at ..., Milwaukee uses a six-digit code engraved on the battery. The first four digits represent the manufacturing date, while the last two digits represent the year. For example, the code "1234 20" means the battery was manufactured on the 123rd day of 2020. If the code is "0518 18," it means the battery was manufactured on the 5th day of 2018., jimne1 Discussion starter. 3 posts · Joined 2009. #1 · Nov 16, 2009. I'm trying to understand the date code on a 3310-1 Holley. All I know is it is a true 780 CFM with downleg boosters and it came off of a GM car. Byeond that I'm stumped. The date code stamped beneath the 3301-1 is shown as 241. I have yet to find any reference that would ..., Most 64's should be 2818 and most 65s 2818-1. The different date codes are a factory carb, 3 digit, or replacement, 4 digit. The 3 digit is year, month, week: 302= 63 Oct second week. The four digit is julian date, year. 2828= 282d day of a year that ends in 8. Reply Like. 04-05-2010, 09:40 PM., 450-LS6 (w/L89) Manual M22. Aluminum Heads/Heavy Duty Clutch. (1) There is some discussion about the 454 being sold with aluminum heads. One very respected source says that according to records at Tonawanda, no 454 engines came with aluminum heads. Their records indicate the L89 option was cancelled (not replaced) with the demise of the L78/L89 ..., Buy Holley HOL 0-4412S 0-4412S Model 2300 500 CFM 2-Barrel Manual Choke New Carburetor ... shipping from Amazon.ca was painless in fact it arrived 4 days earlier than the original estimate arrival date. i love my truck now..... until the wifey comes home from work then she is the special one..... Read more. Report. See more reviews. Top., C1 & C2 Corvettes - Holley 3811 date code - Any wisdom on my carb. It is a 3811 / 4160 with a date code of 0503. Everything that I can find states that this Carb was only used on the 1967 390 HP 427. Does 05 mean 1965, O mean October and 3 mean third week? Or or is this a newly issued Carb by Holley? Some sources show..., Hello all, I have a holley 3139 carb , from what I found so far, it seems to be a 65-66 396 carb. It has the 3874898 ER on the top, list 3139-1, and the date code of 5A5.