427/454 engine decoding help [Archive] - Chevelle Tech

: 427/454 engine decoding help


drice88
Sep 13th, 05, 10:24 PM
Hope someone can help me. Looking at purchasing an engine but need help with the codes stamped on it

heads casting # 3931063 gm4t k27, 3931063 gm4t k29

Block casting # 3963512

and the hard one for me? block vin 13k034420

I was told number match a 69 but what and what car and hp. Can someone please help, I am a novice in training. Thanks

69ssmike
Sep 13th, 05, 10:46 PM
Just about same motor I have in mine, out of a 69 Impala. http://impalass427.com/69engine.htm

drice88
Sep 14th, 05, 10:22 AM
Thanks for the info. How do I tell what hp came with this engine. There are so many different ratings for this setup.

69ssmike
Sep 14th, 05, 2:47 PM
With that block they are telling me 385 HP. But are also asking me to check the plugs by oil sending unit as it may be a 4 bolt.http://members5.boardhost.com/impalass427/index.html?1126411983