2002 Z&! Tahoe

atbatt · September 28, 2011

My Chevy Tahoe has a Whipple SC (CARB Legal) on it. I put it on over 8 years ago and when the motor had less than 15,000 miles on it. Today I have over 141,000 mile and the compression is low on my number 7 cylinder - 75 lbs; no power and throwing code: "number 7 cylinder misfire." Questions are:

1. Rebuild the motor? If so what should I do for better longevity (given pressure generated from the super charger) e.g. better valve, lifter springs and piston rings (if so what brand/type)

2. What havoc would I create - if rebuild the motor and also put in a RV Cam? What cam grind or model recommended (given super charged)?

3. Crate motor - best (and cheapest) place to get a good crate motor? Is there such a thing a low compression "performance motor (super charger)?"

4. I am thinking of keeping the Tahoe and am hesitant on getting a used junk yard motor - thoughts input?

Thank you for your time and input!

Sly · September 29, 2011

My Chevy Tahoe has a Whipple SC (CARB Legal) on it. I put it on over 8 years ago and when the motor had less than 15,000 miles on it. Today I have over 141,000 mile and the compression is low on my number 7 cylinder - 75 lbs; no power and throwing code: "number 7 cylinder misfire." Questions are:

1. Rebuild the motor? If so what should I do for better longevity (given pressure generated from the super charger) e.g. better valve, lifter springs and piston rings (if so what brand/type)

2. What havoc would I create - if rebuild the motor and also put in a RV Cam? What cam grind or model recommended (given super charged)?

3. Crate motor - best (and cheapest) place to get a good crate motor? Is there such a thing a low compression "performance motor (super charger)?"

4. I am thinking of keeping the Tahoe and am hesitant on getting a used junk yard motor - thoughts input?

Thank you for your time and input!

I would start by talking with a reputable engine builder in your area. LS1 forums and Silverado SS forums would be a good place to look as well. Plenty of guys running boosted engines that could offer advice.