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Oct 31, 2004 | 10:43 PM

#16

airharley

Postmaster

Joined: Nov 2001

Posts: 3,351

Likes: 1

From: Escondido, CA

You can go to www.tires.com They should have a speedo calulator that takes rpm, rearend gears, and tire diameter into concideration. Or was that here in the tech section all the way at the bottom?

Oct 31, 2004 | 11:02 PM

#17

monsterbaby

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Joined: Dec 2003

Posts: 18,423

Likes: 9

From: iowa

Quote:

Originally Posted by 53wa2fl

Anyone got that tachometer calculator? I want to keep the RPM's at aropund 2000-2200 with 33 inch tires and a C-6 transmission....what gears do I need?

you didn't mention what speed you want to turn those rpms at, but assuming 65mph, you would need 3.32 gears, and you can play with a several good calculators at 4lo.com also.

Oct 31, 2004 | 11:58 PM

#18

tmyers

Posting Guru

Joined: Jun 1999

Posts: 2,404

Likes: 1

From: Everett, Wa

The D2 heads are the problem here and there is almost nothing you can do with them. If you have been thinking aluminum now is the time. I would go with Trick Flow because they have a 92cc combustion chamber if I remember right and flow great right out of the box. This way you will not need to change anything else.