1996 GMC C3500 Exhaust

1996 GMC C3500
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RON_SMITH
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1996 GMC C3500

This just a question in general. How long does a straight pipe (no muffler or catalytic converter) need to be to prevent damage to the valves? and without a muffler or catalytic converter what percent of HP the the engine increase?
Oct 25, 2010 at 5:53 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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