is my engine block original or a crate.
Thread Starter
2nd Gear
Joined: May 2020
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is my engine block original or a crate.
I recently bought a 1978 corvette my first car and was told that it had a 383 crate engine. The engine casting number is 3970010, the internet tells me it’s a 1968-1979 sbc 350 block. Could this still be a crate or rebuilt engine bored to 383 from some where like summit racing?
Le Mans Master
Joined: Sep 2002
Posts: 5,236
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From: Myrtle Beach SC
I recently bought a 1978 corvette my first car and was told that it had a 383 crate engine. The engine casting number is 3970010, the internet tells me it’s a 1968-1979 sbc 350 block. Could this still be a crate or rebuilt engine bored to 383 from some where like summit racing?
http://www.hunt4cleanair.net/Articles/VIN%209041.pdf
Race Director
Joined: Mar 2017
Posts: 11,960
Likes: 4,516
From: Virginia
I use this site for Corvette numbers.
http://corvettec3.ca/
If it has any marks on the engine stamp pad, but was not from a Corvette, you may be able to look them up here:
http://nastyz28.com/chevy-engine-code-stampings.php
A "crate engine" means a lot of different things, so it is entirely possible that the block is older than the car, stroked to 383, and still a crate engine. It may even be the original engine, rebuilt and stroked, and the PO used the wrong terminology.
Please post some photos!
http://corvettec3.ca/
If it has any marks on the engine stamp pad, but was not from a Corvette, you may be able to look them up here:
http://nastyz28.com/chevy-engine-code-stampings.php
A "crate engine" means a lot of different things, so it is entirely possible that the block is older than the car, stroked to 383, and still a crate engine. It may even be the original engine, rebuilt and stroked, and the PO used the wrong terminology.
Please post some photos!
Last edited by Bikespace; May 5, 2020 at 03:27 AM.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
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From: Unreconstructed, South Carolina
and Most of the above have been overbored forty thousandths
383" is typically a modified 350" ... bored for larger-diameter pistons and fitted with a longer-stroke crank
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All crates in Chevy Performance line (fka GMPP) are entirely new including blocks & heads
Same for Edelbrock crates
https://edelbrock-files-v1.s3.amazon...e-Brochure.pdf
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OP has already received good guidance on Identifying motor ... compare its numbers against references e.g.
http://www.camaros.org/pdf/LimeBook.pdf
