1967 "657" Cylinder Block Differences

[Kenny H.]

Are there any physcal differences between 657 blocks used in Corvettes and non-Corvette applications?

[Joe L.]

Re: 1967 "657" Cylinder Block Differences

Are there any physcal differences between 657 blocks used in Corvettes and non-Corvette applications?

Kenny-----

Except for the engine suffix code, NONE.

However, some small block passenger cars and trucks used Tonawanda-cast blocks whereas only a handful of Corvettes ever used a Tonawanda-cast small blocks. There are minor differences between a Saginaw-cast and Tonawanda-cast small block.

[Keith B.]

Re: 1967 "657" Cylinder Block Differences

all the same

[Kenny H.]

Re: 1967 "657" Cylinder Block Differences

Thanks for your replies.