You can make plenty of power with 9.5:1. 200-220HP should be no problem if everything is set up right.

Lou

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Home of Slant6-powered fun machines since 1988

The only thing that wasn't listed or can't be readily deduced from my last posting was the original .020" steel shim head gasket. The original combustion chamber was 62cc and the pistons were .177" below deck. To get from 7.7:1 to 10:1 with a .040" head gasket means .080" off the head (50cc chambers) and .100" off the block for a new deck height of -.077".

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Joshua

if you look in this thread
http://slantsix.org/forum/viewtopic.php?p=172731#172731
the last post i made in it has a 10:1 CR 231ci,desktop dyno'd for 237HP. pulled from the 99 mopar mag.

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1976 Plymouth Feather Duster
2002 Dodge Dakota 4.7l v8

Thanks, Josh.....I was not paying attention. I "thought" I read that your current deck height was .177.....brain backfire

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225 Cubic Inches of Iron-Head American Muscle

225 bored .040 /.100 off block, Schneider Cam 224@.050~ .480 lift - Stock valves, blended bowls, Offenhauser intake with 500 Edelbrock carb

Tanks for all the feedback guys - keep it comming!

Fanie

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Regards,
Fanie Gerber
It's never junk, it's just a part you're not currently using

http://www.valiant50.co.za
Just say I own a few Mopars