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Old 11-28-2007, 04:45 PM
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Maximum bore size of a chevy 350 block?

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

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Old 11-28-2007, 06:14 PM
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Old 11-28-2007, 06:37 PM
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Quote:
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
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Old 11-28-2007, 07:39 PM
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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
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Old 11-28-2007, 08:03 PM
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283 crank wont fit a 400 block. small journal crank, large journal crank
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Old 11-28-2007, 08:14 PM
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bering spacers.
Shane
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Old 11-29-2007, 02:28 PM
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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.
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Old 11-29-2007, 06:36 PM
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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..
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Old 11-29-2007, 08:20 PM
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327 lg journal will work, the same dimentions as the old nascar engines.
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Old 11-29-2007, 08:34 PM
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Quote:
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
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Old 11-29-2007, 08:36 PM
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Quote:
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
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