Exhaust questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69ChevyLB · 03-13-2005, 01:01 AM

Getting ready to put a new exhaust system on my truck and am wondering about the pros and cons of X pipe vs H pipe vs just straight pipe behind mufflers. Planning on running it to behind rear wheels. Also, what does pipe diameter affect, ie 21/4 vs 21/2? Engine is 350 with RV cam, QJet and headers.

Nima · 03-13-2005, 02:08 AM

This is what I know; X and H pipes are useful for equalizing exhaust flow/pressure between left and right side. I don't think they have any cons. as far as the diameter goes, I know it is the matter of torque. I am not sure if the smaller diameter gives more low end or high end torque. I hope somebodyelse fill up all the blank points that I left.
Nima

03-13-2005, 01:01 AM	#1
69ChevyLB Active Member Join Date: Aug 2004 Location: Canton, OH Posts: 249	Exhaust questions Getting ready to put a new exhaust system on my truck and am wondering about the pros and cons of X pipe vs H pipe vs just straight pipe behind mufflers. Planning on running it to behind rear wheels. Also, what does pipe diameter affect, ie 21/4 vs 21/2? Engine is 350 with RV cam, QJet and headers. __________________ 69 C10 LWB Project 47 Cushman Scooter Project It is better to have loved and lost than to live with a psycho all your life.

03-13-2005, 02:08 AM	#2
Nima Blue 67 Join Date: Apr 2004 Location: Western WA Posts: 1,179	This is what I know; X and H pipes are useful for equalizing exhaust flow/pressure between left and right side. I don't think they have any cons. as far as the diameter goes, I know it is the matter of torque. I am not sure if the smaller diameter gives more low end or high end torque. I hope somebodyelse fill up all the blank points that I left. Nima



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