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Re: H,SH,300,350 sleeves
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Posted by Red Rider on July 29, 2003 at 20:55:39 from (66.248.101.194):
In Reply to: H,SH,300,350 sleeves posted by Dave Wis on July 29, 2003 at 16:34:07:
Overbore kits are available for all the engines you listed. H through 350 all had a 4 1/4 stroke. The H with a bore of 3 3/8 had 152.1 cu in. The overbore without boring the block bumped it up to 3 1/2 giving it the same 164 cu in as the Super H with stock sleeves. The Super H could be bumped up to 3 9/16, 169 cu in with thinner sleeves the same as the 300 and the 300 without boring the block could be bumped up to 3 5/8. Now you could possibly bore the 350 block 1/16 larger but you would be making the block pretty thin and on an older engine with normal deterioration might go through the wall into the water passage. I for one would not bore the block of any H through 350. If your looking for a little more HP out of your H through 350 I would put the correct overbore kit with flat top pistons in it and a 350 propane head. The propane head will up your compression about 3 full points. This will make one heck of a difference. I did this to my 300 Farmall and pull 50 hp on the dyno.
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