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Kirkham Motorsports

 
 
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Old 10-21-2004, 03:46 PM
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Join Date: Sep 2004
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Default Low Compression, Can I do it.

This may seem odd as I have my Cobra up for sale, so a little back story. I went out and bought the biggest stick that I could because thats what I wanted. Really a well sorted track car that looks like a Cobra.

After driving the car for about 2 months I decide that it was just not right for me. I end up using it more as a putter around car then getting off my butt and going to the track. (More a function of no time to do this). So I decided to sell the cobra and find another one that was a little more daily drivable. (+ I need better gas mileage out of the beast due to 3.00 a gallon 91 out here)

After sitting down I have come to the conculsion that maybe I should just really tone down the one that I have. I own it, I can sell off all the spare parts and make some extra cash, Its registered in the great state of California, and above all things I have grown attached to it in a wierd sort of way.

The adjustable suspesion can be softened up a bit for street driving, I already have power steering. I can get more squishy seats. Maybe make the doors functional.

The big thing is the powerplant. I do not want to swap that out, just to much hassle for me right now and I don't want to go though the trouble so I figured that I could just pull the supercharge off the 350 and drop in a basic manifold and much smaller carb on the thing.


So the question is, can I do this. I know that I can mechaically but here is what is holding me up. The engine was built around the supercharger system, beefed up internals, roller cam, and more importantly 7.2:1 compression. It was built to go to the track and take 12 pound sof pressure for hours on end.

"cam is a middle of the road deal nothing to hot, not specifically designed around the blower but more of a every day sort of thig.

Will a chevy 350 run at that compression ratio without a blower?

Do I risk damaging anything?

If I conservativly tune it what do you think I can pull for gas mileage in a a 220 pound cobra wthat turns ~2800rpm at 70 mph?

Other then the intake manifold and the carb what else to I need to swap it over?
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~80 Shell Valley (600+ hp, Track Toy) SOLD
1999 Euro GT3

Looking to buy a SB100 5.0 powered FFR so pass on any infomrmation that you have.
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