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I know the car was a L-48 based on Vin Decode, but i also know the engine was swapped for another early model Corvette engine. on the back of the block (near bell housing) the numbers 3970010 is casted.
I can find any other numbers.
Is there a way to find out if this is a L48 or l82 engine?
Hi W,
This is the location of the pad MW and EM described.
It was originally stamped with coded information that described what configuration this particular engine was assembled in at the engine plant, and, what vehicle it was originally installed in.
The information won't offer any help on what might have been done to the engine since that time.
Regards,
Alan
Upper is the engine information and the lower is the vehicle information.
Block number 3970010 was used for 69-72 Corvette's (350's) and 69 Camaro's (302) 4 bolt main engines. It was also used for 69-79 truck and passenger cars, 2 and 4 bolt main engines.
Last edited by 76vette1; Nov 14, 2016 at 08:08 PM.
Unfortunately
this is what my block plate looks like. wondering if there is any way to get information on this engine.
If you can borrow a bore scope from someone, run it down the dipstick tube and see if the block has 4-bolt mains. If it does, there's a good chance it is at least an L-82 short block.
Chiming in on this because I'm revisiting the same question now. I've heard to look for the pushrod guides before. However, both the L48 and L82 engines used 882 cylinder heads (at least my year). Why would the L82 heads have pushrod guides but the L48 not have pushrods? I just want to know the logic behind the design if anyone knows a good reason.