"Boring" question

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Feb 18, 2004 | 02:13 PM

i_alone

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From: Edmonton Alberta Canada

"Boring" question

What is the maximum size that you can bore a mid to late 70's 351w block out too?????? is it .60 over, .40 over, .30 over?

Thanks Tom

Feb 18, 2004 | 02:40 PM

TheWiz427

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From: Woodruff, SC

You should be able to go 60 over just fine.

Feb 18, 2004 | 04:33 PM

f100guy

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From: shepherd

but people tell me about my 302 bored .060 getting hotter than normal
i just put a big radiator on it and i am doing fine

Feb 18, 2004 | 05:30 PM

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From: Brea CA

I wouldn't go more than 40 over, 60 over will run hot.

Feb 18, 2004 | 06:26 PM

TheWiz427

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From: Woodruff, SC

Thats not necessarily the case every time, I have known a few 351w's that were 60 over and they never had an overheat problem. However i'm not saying it would'nt happen. As for a 302 thats different i would'nt go no more than 40 over.

Feb 18, 2004 | 07:03 PM

i_alone

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From: Edmonton Alberta Canada

Thanks, I'm not too sure on how bad the block is yet....... this is to replace the 88 351 block, that happens to have a hole in the #2 cylinder water jacket from the wrist pin......

Feb 18, 2004 | 07:58 PM

3eggOmelet

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From: College Station, TX

the jerks at my local engine shop keep telling me i don't want to bore over .02 over. their reasoning is that when i go to rebuild the engine it leaves more room to bore again. i keep telling them "I DON'T CARE ABOUT REBUILDABILITY!". what a bunch of jerks.