Engine code?
11-09-2022, 04:01 PM
#1
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Engine code?
Hello all,
I know the engine in my 75 L48 convertible is not matching numbers.
Stamped on the engine pad is "V1029CHB". It has finned aluminum valve covers, but who knows when they were added. Cast iron intake. It has considerably more power than my
75 L48 coupe.
Does anyone know anything about that stamping? I searched the web, but couldn't find anything.
Thanks!
I know the engine in my 75 L48 convertible is not matching numbers.
Stamped on the engine pad is "V1029CHB". It has finned aluminum valve covers, but who knows when they were added. Cast iron intake. It has considerably more power than my
75 L48 coupe.
Does anyone know anything about that stamping? I searched the web, but couldn't find anything.
Thanks!
11-09-2022, 04:53 PM
#3
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CHB was used on a few different engines and car lines. your need the casting number to narrow it down.
11-09-2022, 06:55 PM
#4
Melting Slicks
Shoot a picture of the pad where your stamping is located. Look for another series of smaller characters, the last 5 of which should match the last 5 of your VIN if it’s original.
11-09-2022, 07:46 PM
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11-09-2022, 07:50 PM
#6
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[QUOTE=Steve Stroman;1605889578]Trust me, the only stamping there is V1029CHB. Why does everyone ask for a picture?[/QUOTE]
you ever here the phrase a picture is worth a thousand words
you ever here the phrase a picture is worth a thousand words
11-09-2022, 07:59 PM
#7
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[QUOTE=Nowhere Man;1605889595]I've HEARD that before. But a number is a number. I have 2 of these, pretty sure I can figure out when it not a numbers matching engine.
11-09-2022, 08:01 PM
#8
OP asks for help then responds to a request for a picture as if it’s an unreasonable ask, too much trouble? I may be misreading the response but at this point, if I happened to have his original engine sitting in my garage I wouldn’t tell him.
11-09-2022, 08:03 PM
#9
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so whats the casting number?
11-09-2022, 08:10 PM
#10
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The car is in a storage space right now if you must know.
I didn't know there were people like y'all on this site, always have gotten good responses before. Have a nice day!
I didn't know there were people like y'all on this site, always have gotten good responses before. Have a nice day!
11-09-2022, 08:18 PM
#11
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we are trying to help. but in order to give you the best and correct answers we need your help as well.
11-09-2022, 08:27 PM
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I also KNOW it's not a numbers matching car. I was to see if anyone knew what the V1029 meant. Perhaps generic warranty engine, perhaps something different. I guess the mystery will remain ...
11-09-2022, 08:29 PM
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11-09-2022, 08:32 PM
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V is Flint 1029 is Oct 29th. to what year we wont know until you tell us the casting date and casting number. ALL engines after 1968 got a vin stamp. having a three-alpha code for a suffix code tells us it was made after 68. CHB was used in a few different car lines in different cubic inch engines. having a suffix code tells us it was installed in a car on an assembly line or sold over the counter for a said car
11-09-2022, 08:41 PM
#15
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V is Flint 1029 is Oct 29th. to what year we wont know until you tell us the casting date and casting number. ALL engines after 1968 got a vin stamp. having a three-alpha code for a suffix code tells us it was made after 68. CHB was used in a few different car lines in different cubic inch engines. having a suffix code tells us it was installed in a car on an assembly line or sold over the counter for a said car
11-10-2022, 08:45 AM
#16
Race Director
the vin number is frequently not stamped as deep as the engine identifier. it could be full of paint. we can give you a better answer with more input. CHB is an 88 firebird 305, a 73 307 or a 75 corvette L48. if the 305 it has a small square stamp pad and most likely no manual fuel pump. V means flint michigan where all c3 small blocks were built. so odds are it is a correct orig 75 L48. odds of somebody finding a correct 75 L48 to install in a 75 L48 vette that needs an engine are not that good. why are you so sure it is not the original engine? what is date stamp on the trim tag on left A-pillar? i bet early november. just cuz it has ***** doesn't mean it can't be the original engine. and since it is most likely a 75 L48 anyway proves the point. it could also have been rebuilt and decked and VIN machined off but RPO and build date survived.
Last edited by derekderek; 11-10-2022 at 08:52 AM. Reason: the
11-10-2022, 01:11 PM
#17
I understand that I have to provide proper information to get a knowledgeable answer, but I do trust my lyin' eyes. I provided the ONLY information that is stamped on the pad.
I also KNOW it's not a numbers matching car. I was to see if anyone knew what the V1029 meant. Perhaps generic warranty engine, perhaps something different. I guess the mystery will remain ...
I also KNOW it's not a numbers matching car. I was to see if anyone knew what the V1029 meant. Perhaps generic warranty engine, perhaps something different. I guess the mystery will remain ...
11-11-2022, 08:12 AM
#18
Racer
V is Flint 1029 is Oct 29th. to what year we wont know until you tell us the casting date and casting number. ALL engines after 1968 got a vin stamp. having a three-alpha code for a suffix code tells us it was made after 68. CHB was used in a few different car lines in different cubic inch engines. having a suffix code tells us it was installed in a car on an assembly line or sold over the counter for a said car
For clarity this is not true. Truck engines didn't get VIN stamps until later
11-11-2022, 06:41 PM
#20
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There are other things that can be seen on the engine stamp pad besides just the numbers that can help identify an engine. Pad shape, location, surface texture and even the size and font of the numbers are some that come to mind.