chevy small block

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May 4, 2008 | 08:33 PM

92builtbird

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chevy small block

Is it possible to do a 4.125 inch bore and a 3.75 inch stroke in a chevy 283, to make 400 cubic inches?

thanks!

May 4, 2008 | 10:17 PM

ZONES89RS

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Not no but HELL not.

Z

May 10, 2008 | 11:25 PM

1994z

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second the no, but you can bore your 283 .125 over with stock stroke. leave the line at 8000 rpm shift at 10,000.

May 11, 2008 | 12:24 AM

SMALLBLOCKHERO

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you need an aftermarket block with siamese bores to acheive that bore size.

May 11, 2008 | 10:17 AM

mrdragster1970

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From: Illinois, RT 66 dragway area

.

The only chevy block that will take a 4.125 bore is a 400. If you have a 283", try selling or trading to a restorer.
Someone that needs a number matching 283". Than get a 400 or aftermarket block.

.

May 11, 2008 | 05:26 PM

RAGENZ28

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I ran my 400 block with a 4.145 bore, you can go 4.155

May 11, 2008 | 11:31 PM

ZONES89RS

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From: Conroe, Texas

Mine is 4.165.

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May 12, 2008 | 03:03 PM

ZONES89RS

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Yea, you can go .060, but you are not going to last long usually.

May 12, 2008 | 07:56 PM

#10

slow95z

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you could bore your 283 to 4.125 but you would catch hell keeping water in it and not in the oil pan. the 400 can be bored out a good bit because most of the time its filled with hardblock and you're only wanting to make it a 1/4 of a mile from where you are. you really wouldn't want to get stuck in traffic with a stock bore on a hot day with a well built motor with a 400 though.