Block identification




From the Lime Book (link in the forum stickies):
The Best of Corvette for Corvette Enthusiasts
Block casting 3914660 is identical with the 39114638 except for minor interior casting changes at the bottom of the cylinder bores for rod clearance. It was used interchangeably with the 3914636 in certain applications, but they are unverified at this time. Those applications which could have used this block are listed above. There was some evidence that this block was used prior to February 29, 1968 assembly date. Note: All applications have not been verified.
1968
Passenger / 327 / 250, 275 hp / 2-Bolt
Chevelle / 327 / 250, 275 hp / 2-Bolt
Chevy II / 327 / 275 hp / 2-Bolt
Camaro / 327 / 210, 275 hp / 2-Bolt
Corvette / 327 / 300 hp / 2-Bolt
What you have is a 1968 327 block with large main journals.
If that engine was out of a 1968 Corvette the pad would read FXXXXHE, HO, HP or HT.
Engine suffix code EE for 1968 is:
Chevy II / 327 / 275 hp / Powerglide
Chevelle / 327 / 275 hp / Powerglide
Camaro / 327 / 275 hp / Powerglide
What are the cylinder head casting numbers, I'm guessing 3917291.
Last edited by Mr D.; Nov 15, 2022 at 06:49 AM.
Could you post a photo with scale and coverage similar to photo #3 in John Hinkley's article on small block production. (Link below)
I am curious about what appears (out of focus) to be a square plug on your motor's front.
Thanks. Mapman
http://www.camaros.org/pdf/flint_engine.pdf
Block casting 3914660 is identical with the 39114638 except for minor interior casting changes at the bottom of the cylinder bores for rod clearance. It was used interchangeably with the 3914636 in certain applications, but they are unverified at this time. Those applications which could have used this block are listed above. There was some evidence that this block was used prior to February 29, 1968 assembly date. Note: All applications have not been verified.
1968
Passenger / 327 / 250, 275 hp / 2-Bolt
Chevelle / 327 / 250, 275 hp / 2-Bolt
Chevy II / 327 / 275 hp / 2-Bolt
Camaro / 327 / 210, 275 hp / 2-Bolt
Corvette / 327 / 300 hp / 2-Bolt
What you have is a 1968 327 block with large main journals.
If that engine was out of a 1968 Corvette the pad would read FXXXXHE, HO, HP or HT.
Engine suffix code EE for 1968 is:
Chevy II / 327 / 275 hp / Powerglide
Chevelle / 327 / 275 hp / Powerglide
Camaro / 327 / 275 hp / Powerglide
What are the cylinder head casting numbers, I'm guessing 3917291.

















