Need help decoding my GM cast block help!
Racer
Joined: Mar 2015
Posts: 344
Likes: 108
Block Decoding
Lots of web resources to select from to decode this. Looks like a 1968 327 4-bbl, 250 HP with Powerglide. There should also be another date code cast into the rear of the block on the side opposite the large casting number.
Last edited by snomuncher; Nov 8, 2016 at 10:06 AM.
Racer
Joined: Dec 2014
Posts: 402
Likes: 44
From: Pittsburgh PA
According to the stamping T1019HJ this is what you have.
T=Tonawanda (engine plant)
10=Month
19=Day
HJ=Engine Code - 1968, 327, 250hp, 4bbl, Powerglide, Full Size GM Body
As for the partial VIN 18L128731 it breaks down this way.
1=Chevy
8=1968
L=Van Nuys, California GM Assembly Plant. Back in the sixties made full size chevy's later, before it closed in 1992, it built Camaro's and Firebird's.
Ken
T=Tonawanda (engine plant)
10=Month
19=Day
HJ=Engine Code - 1968, 327, 250hp, 4bbl, Powerglide, Full Size GM Body
As for the partial VIN 18L128731 it breaks down this way.
1=Chevy
8=1968
L=Van Nuys, California GM Assembly Plant. Back in the sixties made full size chevy's later, before it closed in 1992, it built Camaro's and Firebird's.
Ken
Last edited by kenpeindl; Nov 8, 2016 at 06:56 PM.
