307 Stroker Anyone???

[MikeB]

Originally Posted by pontiacvince

I want to add a 3.75" stroke crank from Summit and the 400 SBC 5.565" rods. This will make it a 360 (359) cubic inch. The only problem is the available pistons will be .070 out of the hole. I can get thicker head gaskets or mill my pistons.

That's .070" out of the hole with a 9.025" deck height. Yours could be higher if it's never been milled. But whatever the height, I'd strongly suggest taking enough off to ensure the decks are flat and square to each other.

Also, what did you plan for a cylinder bore? Hope you're not thinking about anything more than .060"over. In fact, if it cleans up at +.030", I'd stop right there. Finally, you must definitely get the rotating assembly balanced.

As far as a somewhat unusual build, 20 years ago I built a 327 using a 350 4-bolt block, cast 307 crank, and K-B hypereutectic 327 pistons. I did get some flak for not building a 350, but I always liked the way 327s would rev. I put it in a 55 Chevy sedan with a Muncie 4-speed.