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Old 11-25-2005 | 06:37 AM
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Default Exhaust swap?

I want to go from the cast iron manifolds to the Gil mainfolds & risers. I have 454 MPI's, the 385 HP models. What kind of gain should I expect?
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Old 11-25-2005 | 07:55 AM
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Default Re: Exhaust swap?

I'm gonna guess and say maybe 5 HP. Get a set of CMI pipes and now you may see 15-20 HP. That will be good for 1 MPH.
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Old 11-25-2005 | 11:11 AM
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Default Re: Exhaust swap?

Don't waste your money.
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Old 11-25-2005 | 11:47 AM
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Default Re: Exhaust swap?

zilch.
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Old 11-25-2005 | 01:32 PM
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Default Re: Exhaust swap?

Originally Posted by Smitty
I'm gonna guess and say maybe 5 HP. Get a set of CMI pipes and now you may see 15-20 HP. That will be good for 1 MPH.
I AGREE WITH SMITTY MAYBE 5 TO 8 HP AND THE SOUND WILL BE ALOT BETTER THATS FOR SURE.
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