Holley date codes

Holley LIST 50265. Holley Part number:LIST 50265. Holley Date Code: 1575 May 1985. Holley Date Code: 1575 May 1985 per the experts. Ford Holley. Very nice used Holley carburetor that was removed from a 1985 Mustang GT 5.0.

Holley date codes. Place the new carburetor flange gasket, provided with the carburetor, in the proper position on the intake manifold. Place the carburetor on top of the flange gasket on the manifold. Install the hold down nuts and snug down progressively in a "crisscross" pattern (60-80 in./lbs.), as shown in Figure 5. Figure 5.

For the most European tubes made after 1955 date codes are located on the bottom of a sidewall of a tube (not always the case) In this case, it's B0D (this is for Mullard, Blackburn - 1960 - April) The code is broken down into 3 or 4 characters. 1) Factory code, 2) Year of Manufacturing, 3) Month, 4) Week (this is usually on tubes ...

The suffix code F0415ZI stands for F= Flint, Michigan engine plant, 04=April, 1966, 15=day of April and ZI=Chevy II special hi performance with manual transmission. The ZI suffix code will not be found on any other car, except the 66/67 Chevy II L79. D76 is the casting date of the block. D=April, 7= day of the month and 6=1966.Jan 7, 2006 · On a related note, my car was started the 4th week of May, 1968 (05D) and the carb is dated 833 like chedderboys. The 4053 carbs were built in batches and I've seen several 4053's with this date stamp. Now, I'm not sure when the batch before that was built, or the batch after that, but usually, the Holley carbs are a few days to several weeks ... 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.Carburetor Reference Guide - MyMopar. 1963-1974 Carburetor Reference Guide. Carburetor Number. Carburetor Type. Application. 1963. 3236. C-1. 170 / 225 Taxi. Contains the latest V3 touch screen firmware. 3.5 in. Touchscreen Firmware - V4. Contains latest V4 firmware and installation instructions for the 553-108 3.5” Touch Screen. 3.5 in. Touchscreen Firmware - V5. Holley EFI V5 Firmware update for 3.5" TSLCD. 3.5 in. Touchscreen LCD User Manual. This one's date code is 764, which translates to it being manufactured in the sixth month (June), 4th week of 1967. (It doesn't have the center main body that "re-issued" carbs generally have and the date code is far earlier) I don't know that Holley stamped past date codes that early onto re-issue carburetor air horns either.

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.Shop my Monthly Faves Shop my Amazon Faves. Make up Favs2702 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.And, today's best Holley coupon will save you 25% off your purchase! We are offering 34 amazing coupon codes right now. Plus, with 26 additional deals, you can save big on all of your favorite products. The latest promo code was added on April 23, 2024 and the latest deal was added on April 28, 2024.The suffix code F0415ZI stands for F= Flint, Michigan engine plant, 04=April, 1966, 15=day of April and ZI=Chevy II special hi performance with manual transmission. The ZI suffix code will not be found on any other car, except the 66/67 Chevy II L79. D76 is the casting date of the block. D=April, 7= day of the month and 6=1966.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 R4555 LIST 4555 and used on 70 LT1 780 cfm . Check here for specific Muscle car Info. Referenced by ; Holley R4555 or LIST 4555.

'92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 compression ratio, 232°-244° duration/.623" lift/114° LSA H/R camshaft, Trick Flow R-Series FTI Comp Ported intake, BBK 80mm throttle body ...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 4296.1969 Holley Carburetor 4346 - 780 CFM Big Block 396, 427, 3959164 New correct design Holley carburetor for your 69 Chevelle and Nova. Exact for all 1969 big block 396 / 375 and 427 / 425 high performance models. 780 CFM delivers the needed fuel to give optimum response to your ride. ... No date code stamping, so you can add whatever you like ...1967 saw the first year the 396 V8 camshaft abandoned the grooved rear journal and matching bearing in the engine block in favor of a smooth journal like the 283/327 V8. Any camshaft from a 1965 or 1966 396 engine can be used in a 1967 or later block but not the other way around. This groove is clearly visible in this photo on the camshaft on ...Holley 3916143-CT Value? ... The date is the key and if it just happens to work for someone that is looking. Team Camaro Gold Member #14 1969 Camaro RS/SS Azure Turquoise 1969 Camaro Z/28 Azure Turquoise 1984 Camaro Z28 L69 33K orig miles, 1987 Monte Carlo SS 25K mi original owner. 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.

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Looking for love? More and more people are, and there's no doubt that finding your match online has made it easier for many, and opened up possibilities for people who felt stuck o...In the constantly evolving world of healthcare, it is crucial for medical professionals to stay up-to-date on coding changes. Accurate and efficient coding is essential for proper ...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.The Holley EFI 6.86” Pro Dash is customizable with a variety of gauge and indicator screens that can be ... GPS lock and to keep the current date and time. “Clean” = a connection that does not share the same connections as “dirty” sources such as coils, a starter, solenoids, fans, etc., that have a lot of electrical noise or solenoid ...

For tech support questions. ask our experts at 1-866-404-6141. Shop the official site of DiabloSport's industry-leading automotive performance tuners & programmers at Holley.com!Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. ... Join Date: Sep 2018; Posts: 29; Share Tweet #1 TPS Troubleshooting 10-24-2022, 03:11 PM ... I'm just realizing now looking at the picture there looks like it may be a QR code underneath the number.Holley started using four digit date codes in 1973. So I second what Velox said about the year of manufacture being 1978, 1988, etc. Holley has made special production runs of various carburetors over the years. I have an undated List 3810 that was purchased new in 2006.One is list 3310 with the original 1965 Chevy part # 3878261-EH though the date code says it's a 1969 replacement for the '65 SS 396/375hp. The other one is list 3310-1 with no other codes. Both are 4150's, 780 cfm, down leg boosters, vacuum secondary's and have been unmolested. They have identical tuning and match Holley's specs.If your tires were made before the year 2000, the date code will be only 3 digits – the first two digits again listing the week of the year, and the last digit being the last digit of the year of the tire’s manufacture. This means a date code of “529” could mean the tire was manufactured in December 1999, or December 1989 – or even ...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 .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 062The List number for a Model 2010, 2300, 4010, 4011, 4150, 4160, 4165, or 4175 carburetor can be found on the right side of choke air horn. The List number for the 4500 can be found on the top of the main body casting. Below the list number is a date code that will contain no more than four (4) digits. See Figures below.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.

The carb is a 4053 but is date coded to June 2, 1969. The carb need to be gone through and replated. Is the carbs date close enough to the build date of the car (and engine) to be considered normative practice or do I need to commence hunting for a later dated carb for the car to be "correct"? That date is fine for your car.

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! Steve0127 - 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 NumberThe EIA program for assignment of Date Codes provides a standardized method to stamp or mark any or all products to identify the year and week of production. The Weekly Date Codes can be found below. This program follows the conventions defined in EIA-476-A (Source and Date Code Marking) and EIA-476-B (Date Code Marking) and follows the MIL-STD ...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. 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. Tweet. #1. 7" Digital Dash Freezing. 09-29-2016, 11:40 AM. Having an issue with my 7" Digital Dash. When the car is running, the screen will freeze and switch between layouts. If the power is just on to the car, the screen won't throw fits. Anyone seen this? I have tried resetting it back to factory with same results.Save $$$ w/ Holley Coupons: 33 Holley Coupons and Promo Codes tested and updated daily. Find the latest Coupon Codes and discounts for May 2024 on HotDeals.com. Deals. Coupons. Stores. Travel. Mother's Day Sale ... Expire Date Join Holley.com Today and Receive Additional Offers: $10.09 Average Savings: 06 May: Great Offer for Holley: 10% …

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All Holleys through 1972 had 3-digit date codes (year, month, week of the month); all Holleys after 1972 had 4-digit Julian date codes (day of the year, year). Any Holley on a Corvette with a 4-digit date code is a later Service replacement.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.How to Tune Holley Terminator X for Beginners - Intro to Data Logging- In this video we go over the basic functions with in the data logging portion of the ...Online dating can be a tricky world to navigate. Learn about online dating, including how to make a good profile and how to meet potential dates. Advertisement ­One of the basic hu...The Holley Carburetor date code is 881. Additional information. Weight: 14 lbs: Dimensions: 12 × 12 × 8 in: Related products. 1971 HOLLEY CARBURETOR 454 LS6 LS7 $ 1,199.00; HOLLEY LIST 3245 L 79 NOVA $ 1,599.00; Holley Ford Carburetor 4160 450cfm $ 500.00; Product Search. Search.Terminator X V2.0.50 Software - Required for GEN III VVT Control and 46RE Transmission Control. Updated - 2021-05-05. Terminator X V2 7" Digital Dash Firmware. 7" Dash Firmware for Terminator X V2. Terminator X Latest Software (V2 build 80) Terminator X V2.0.80 Software. Terminator X V2 SD Card Contents. Includes V2 Build 80 Firmware.List 2818-1 GM # 3849804 Date code 482 (1964, August, second week) I have not altered or attempted to clean this carb. For a Restoration I could do damage. Carb is missing the vacuum secondary actuator, the choke flap, and accelerator arm. I have these parts available off some use older era correct Holley's.Ford and Mustang bellhousings flywheels. 427 Tunel Port, 427 Cammer SOHC, Mustang Boss 429 BOSS 351 and BOSS 302 parts ID decode and date code decoding Shelby Ford Mustang 289 302 351 390 406 427 428 429, K code hipo, cobra jet, Boss, Intake manifold, Exhaust manifolds valve covers gaskets, classic race vintage images pictures.Author: 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 ….

Step 2. Locate the Holley model number. After determining the carburetor is a Holley, look for the code numbers, usually located on the side of the air horn. The Holley model number is present along with the auto maker part number, if factory-issued, a date and application code. Locate the lone four-digit code.How do I read date code on Holley 2818-1. Guys, I have looked on the web to try to read the date code on a 2818-1 carb that I bought for my 65 L79 engine, the numbers below the 2818-1 are "0619" some of the information I have seen give the front number as the year & others give the last number as the year, Thanks in advance for any …Speed-Seal and Speed-Flex. Hardline. Also in Plumbing AN Fittings and Hose. Adapters. All Hose Groups. Application Specific Parts. Catch Tanks. Fuel System Components. Hose Ends.Holley 2bbl date codes ? Holley 2bbl date codes ? Started by johnshotrods, June 26, 2022, 03:30:38 PM. Previous topic Next topic. 0 Members and 1 Guest are viewing this topic. Print. Go Down Pages 1. User actions. johnshotrods. Trade Count: Small Block; Posts: 56; Logged;Holley Carburetors with 3 digit Numeric date codes. This sample code is from a 1969 BOSS 302 carburetor with date code 951. Holley Carburetors 4 digit Numeric date codes. This …Copied from a Holley Rep posting: Let me explain the build date coding a little better. Most of you have nothing to worry about: Date codes marked 0016 – 1986: (built from January 1st of 2006 (001) through the 198th day of 2006 (July 17th) Date codes marked 3345 – 3655 (built from December 1st of 2005 (334th day) through December …Save up to 10% OFF with these current holley coupon code, free holley.com promo code and other discount voucher. There are 11 holley.com coupons available in May 2024. Greenpromocode.com. Stores; ... The code has expired. Check the expiry date of the code, as some of them run for a limited time or expire after a set period.2 Jun 2021 ... My Holley Sniper EFI has been having an issue with a corrupt SD card and in this episode I walk you through how I fixed the problem by ...C1 & C2 Corvettes - Holley 3810 date codes????? - I have two Holley carbs. both numbered 3906631-DA list 3810. But the date codes are 943 and 984. I checked all of my books and only the 67 corvette is listed using this number, does anyone have info. on other Chevrolet applications using these numbers?.Remingtion firearms. manufactured after 1921. Remingtons manufactured after 1921. have a code located on the left side of the barrel. near the frame that identifies the year and month of. manufacture. The following letters correspond to the. months of the year, for example B=January, L= February. and so on: Holley date codes, Are you tired of throwing away eggs because you’re unsure of their freshness? Understanding expiration dates and the shelf life of eggs in the refrigerator can help you make inform..., Holley Super Sniper EFI 2x4™ - Classic Gold. $1,784.97. save $1,049.03. Part# 550-533. Add To Cart., This link may help: http://www.holley.com/data/TechService/Technical/Carb Numerical Listing.pdf The date codes on factory Holley carbs were 3-digits up to 1973, and 4 digits thereafter. The 3 digit format was year-month-week, and the 4 digits were julian date (day 001 to 365 of the year) and last digit of year (doesn't clarify which decade though)., Below the list number is a date code that will contain no more than four (4) digits. See Figures below. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5. EXPLODED VIEW - MODEL 2010. NOMENCLATURE - MODEL 2010 Ref. No. Description Ref. No. Description 1 Choke Lever and Swivel AssemblyFast Idle Cam Plate Screw 2 3 Fast ..., View a Map of Holley, NY. Holley, NY is a city located in Orleans County, New York and has a land area of 65.08 square miles (168.56 km2). The water area for the city is 0.04 square miles or 0.10 km2. There is one unique zip code in Holley, New York and it is 14470. The area code (s) for Holley is 585., C3 General - Holley carb date of manufacture - I have just purchased a used Holley carb, list# 1850-3, date code 0069. Does anybody know how to tell if this carb was manufactured on Jan. 6, 1969, 1979, 1989, 1999, or 2009? (I'm kinda being a wise-ass here, I'm pretty sure the carb was not made in 1969) I can't find..., Description. Original Holley 3247 Corvette Carburetor 1966 date code 641. This is carburetor with for a 1966 Corvette with a 427 engine making 425 hp.The General Motors number is 3886101-EI. Restored to its original Holley color, all of the steel hardware has been re-plated to the original finish. Carburetor retains the factory Holley calibration., 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. ..., All Holley power valves are stamped on the side or, as in this case, the metal reinforcement near the center. You can see an "8" and a "5" making this an 8.5"Hg power valve. The stamps on the top are date codes. The range for standard Holley valves is from 2.5 to 10.5 "Hg (inches of Mercury)., 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. ... ECU -> Date Code:20160317 ECU Firmware Version: 1.1.17, 12 Jan 2019 ... ... date code correct rear axle. This rare ... Holley 750 cfm carburetor, Petronix ... date 1970. Moving back to the rear axle, it is a date code ..., In the constantly evolving world of healthcare, it is crucial for medical professionals to stay up-to-date on coding changes. Accurate and efficient coding is essential for proper ..., Holley started using four digit date codes in 1973. So I second what Velox said about the year of manufacture being 1978, 1988, etc. Holley has made special production runs of various carburetors over the years. I have an undated List 3810 that was purchased new in 2006., 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., Re: Holley 3310 date code. Joe; The 3310 was originally installed on the `65 Chevelle Z16, but it also became an over-the-counter universal replacement carb as well, and is still produced by Holley today, although the current version has little in common with the original version save for the LIST number., Holley SniperTM makes no warranties of merchantability, of fitness for particular purpose, or that its products are approved for general use, or that its products are approved for general use, or that its products comply with laws, regulations, or ordinances in the state ... Created Date: 9/28/2016 3:05:22 PM ..., 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., This one's date code is 764, which translates to it being manufactured in the sixth month (June), 4th week of 1967. (It doesn’t have the center main body that “re-issued” carbs generally have and the date code is far earlier) I don't know that Holley stamped past date codes that early onto re-issue carburetor air horns either., From Holley date codes. First digit is the last number of the year. Second digit is the month. Third digit is the week of the month. Your date code "123" could be a 1961 or '71 carb, third week of Feb. The only mention I see of that carb number is for use on a 1964-'65 Corvette w/a 327., I managed to obtain a copy of a page of the original engineering data sheet from Holley dated November 17, 1964. They were released to manufacturing December 2. Original, S1MS three digit date code carbs like yours are quite rare. It seems there were some date codes produced in greater numbers than others., D: 1970's. E: 1980's. F: 1990's. All Ford carburetors have the number '9510' in them. An example of a complete carburetor number as it might appear on a tag: D3TF-9510-CC. D means the 70's decade, 3 means 1973. In our lists, we abbreviate this number as D3TF-CC because all carbs have a '9510' number. Ford, Autolite, Motorcraft carburetor numbers., Holley LS Fest. 146,120 likes · 3,136 talking about this. Holley LS Fest is a celebration of everything and anything powered by the incredible GM LS engine!, D: 1970's. E: 1980's. F: 1990's. All Ford carburetors have the number '9510' in them. An example of a complete carburetor number as it might appear on a tag: D3TF-9510-CC. D means the 70's decade, 3 means 1973. In our lists, we abbreviate this number as D3TF-CC because all carbs have a '9510' number. Ford, Autolite, Motorcraft carburetor numbers., 12-21-2013, 08:19 AM. On my NOS bottle, the date code is 09 ⇧ 1 1 (September, 2011). May God's grace bless you in the Lord Jesus Christ. '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 ... , 12-21-2013, 08:19 AM. On my NOS bottle, the date code is 09 ⇧ 1 1 (September, 2011). May God's grace bless you in the Lord Jesus Christ. '92 Ford Mustang GT: 385"/6.3L SBF, Dart SHP 8.2 block, Eagle 3.470" forged steel crankshaft & H-beam rods, Wiseco 4.200" forged pistons, Trick Flow Twisted Wedge 11R 205 CNC Comp Ported heads, 12:1 ..., Do you think your partner may have a compulsive sexual behavior disorder (CSBD)? In this article, we detail what CSBD is, how it is treated, and advice on how to cope. Dating someo..., 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 , 4478 posts · Joined 2000. #2 · Apr 6, 2009. 3 digits are common Jeff as my 1969 Holley 4346 has a date code of 924 which represents (9)1969, (2)February, (4)4th week. To be honest I don't know if the 1965 carbs were coded the same as the 1969's. One might think it could be a 1970 carb from the fourth week of May (if you followed the same ..., All Holleys through 1972 had 3-digit date codes (year, month, week of the month); all Holleys after 1972 had 4-digit Julian date codes (day of the year, year). Any Holley on a Corvette with a 4-digit date code is a later Service replacement., How to Tune Holley Terminator X for Beginners - Intro to Data Logging- In this video we go over the basic functions with in the data logging portion of the ..., These units showed up on thousands of Slant-Six Mopar vehicles, but they are a temperamental, leak-prone carburetor that I avoid., The Date Code begins with a letter designating the month the manifold was cast. A = January B= February and so on. The middle numbers designate the date and the Last number the year. ... I have a 1966 396 360 HP L 34 4 Spd. that came with a holley intake 3866948 how can this be 2 different manifolds with the same part # Leave a Reply Cancel reply., Oct 4, 2007 · Ok, I have 2 carbs, holleys, and under the list #'s is as follows: first carb: 1374. sec carb: 2502. These should be the date codes, but im used to seeing 3 digits. So if you can help, I would be happy. Thanks. 1374 = 137th day, year ending in 4, like 74, 84, 94. 2502 = 250th day, year ending in 2, like 82, 92 etc.