Re: overhauling H

Posted by riverbend on October 01, 2004 at 12:33:37 from (208.160.33.223):

In Reply to: overhauling H posted by bhb on October 01, 2004 at 06:14:42:

Why don't you buy the pistons and sleeves seperate from the valves if you want to keep the same head ?

When I measured the domes on the fire crater pistons, they were only about 21ccs, about the same volume as the head gasket. The 3 7/16 overbore also gives about 23ccs. If you want to get more power, find a high compression head (#8043). The change in volume is over 50ccs.

Better yet, go with the 3 7/16" domed pistons and a later model gas head- the calculated compression ratio goes from 4.3:1 to 6.5:1. Also, have the cam reground to 0.240" lift. It made noticeable difference on my H.

Greg

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