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Author Topic:   hobby stock engine
posted January 08, 2003 06:42 PM
how are they checking compression ratio? are they just looking for flat tops?

if it's a chevrolet......400 block, 327 crank, 6.125" rods, flat top pistons.

if it's a ford......302 block, 3.40 stroker crank, 5.4" rods, flat top pistons. this is going to be about 75 lbs. lighter than a small block chevy. my opinion......

posted January 08, 2003 09:39 PM
with imca they are pretty picky and do have all the tools to check it right. you are not alowed to stroke an imca engine crank must match. the best way to make power in one is with 6 in rods and you can get a set of hyperutectric pistons pretty cheap to keep it sensable for the claim rule,good flowing heads a good cam and most important of all in my opinion is the rochester big carb it makes a world of difference

posted January 10, 2003 03:19 PM
realy just depends on how much you can aford to lose when you get claimed lol this year i got a set of speed pro hyperutetric pistons gonna use all stock reconditioned rods and crank buying heads with the 202/16 valves in it and z-28 springs, cam that kinda depends on the track and your set up thats one of those deals that works here but not there

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