Series II INTENSE 1.9 Rocker Install - Page 7 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-06-2005, 10:22 PM   #61
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Originally Posted by smellbird
The higher ratio will help your MPG, I noticed that my RPM'* dropped to 1900@65mph. But I enjoy watching the Tach shoot up to 6K too much.
RPM'* shouldn't have dropped. Your RPM'* are going to be the same at a given speed no matter what you do to your engine due to your gear ratio in your tranny and your torque convertor. The only way to change RPM'* at X speed is to change gear ratio or torque convertor. (unless your accelerating because you can change shiftpoints)

But MPG does increase a little with rockers. Goes up a couple MPG. With a cam it goes down 1-3 depending on which cam you get.

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