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up-fixing der car(ma)
YTNUKLR's Avatar
Join Date: Aug 2002
Location: Fremont, CA
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I think 10.5:1 on twin plugs with Mod-S cams in a 2.7 is about the safe limit on Pump 91, I might drop it down to 10.2:1 or so and run more timing if you can. Make sure you get a degree wheel and check your cam timing very carefully.

Yes, shuffle pin that mag case.

You will have fun with that motor....
Scott Kinder
kindersport @

Last edited by YTNUKLR; 05-05-2011 at 02:22 PM..
Old 05-05-2011, 02:19 PM
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