Question;
in ref to the SHP Pro block, are the 4.00 bore and the 4.125 bore the same casting? Can either block be bored to 4.155?
Thanks,
Dart SHP Pro block
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Re: Dart SHP Pro block
It's the same casting. Believe it can be bored 4.165 max. but I've seen some go a little more.
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Re: Dart SHP Pro block
Using two different casting molds just for that is not cost effective and makes no sense.
Re: Dart SHP Pro block
What aftermarket SBC block is it that will bore to 4.25?
And I am pretty sure there is a matching head gasket for it at 4.25" bore.
pdq67
And I am pretty sure there is a matching head gasket for it at 4.25" bore.
pdq67
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Re: Dart SHP Pro block
Technically, any Dart or world cast iron block will. Even a stock 400 block will. I have had 1 engine over the years at 4.250. It was a Dart 9.3 deck iron eagle. I wasn't the genius that originally took it that far, brand new nonetheless, but it ended up in my Care for years.
Fel pro makes a full round 4.250 bore head gasket that's .051 thick. The above engine NEVER had head gasket issues. It was fairly high compression.
I would NOT recommend going 4.250 on a stock block for obvious reasons, but, if you had a Dart block, got it cheap, and it was "used" up, why not. World Products actually had a limited edition 454 sbc, that was 4 inch stroke. It worked fine. It just isn't practical to use up a brand new block right from the get go unless your made of money and don't care