[beemdubya]

I basically want to destroke my early 350. Getting the cubic inch and stroke that i would like i would need to run a bore of 4.125.. is this do-able? thanks

[CNC BLOCKS NE]

No Can Do

[machine shop tom]

Originally Posted by beemdubya

I basically want to destroke my early 350. Getting the cubic inch and stroke that i would like i would need to run a bore of 4.125.. is this do-able? thanks

You can do that with a 400 block, main bearing spacers, and a 350 crank.

Do that with a 350 block and you will have a Stanley Steamer.

tom

[Chevrolet4x4s]

A 283 crank would make a high reving screamer in a 400 block does anyone know if the OHC corvette heads zr-1? will fit and work on the earlier blocks as this would be a truly awesome setup.
Shane

[matt167]

283 crank wont fit a 400 block. small journal crank, large journal crank

[Chevrolet4x4s]

bering spacers.
Shane

[Blazin72]

You can get bearing spacers to run medium journal cranks in large journal blocks (i.e. 350 cranks in 400 blocks) 350s have 2.45" mains, 283s have 2.30" mains. I don't know if you can get small journal to large journal spacers or not. So, unless you can find small to large journal spacers, you won't be able to run a 283 crank in a 400 block.

[BOBCRMAN@aol.com]

Childs and Albert used to list small journal bearing spacers $$$$$

Largest you can bore a 350 block is .080. And that doesn't always work..

[chrismac]

327 lg journal will work, the same dimentions as the old nascar engines.

[Chevrolet4x4s]

Originally Posted by Blazin72

You can get bearing spacers to run medium journal cranks in large journal blocks (i.e. 350 cranks in 400 blocks) 350s have 2.45" mains, 283s have 2.30" mains. I don't know if you can get small journal to large journal spacers or not. So, unless you can find small to large journal spacers, you won't be able to run a 283 crank in a 400 block.

I have heard of it being done before ..... Someone on here had one IIRC couldnt youjust weld the crank and have it turned down then use normal bearings?
Shane

[Chevrolet4x4s]

Originally Posted by chrismac

327 lg journal will work, the same dimentions as the old nascar engines.

But a 327 crank is a l3.25 stroke. What about an l99 (bably lt1) 3 inch crank and a main seal adaptor
Shane