The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - thoughts on my exhaust design on my 87 GMC crew cab long bed dually

cmax87v3500 · 03-01-2015, 02:38 AM

Unless its a Built motor that probably going to be too much exhaust. A single 3" is usually plenty on stock or even slightly built motors in my opinion. Single 3" on my 454 trucks.

03-01-2015, 02:38 AM	#3
cmax87v3500 Registered User Join Date: Apr 2012 Location: Wenatchee Washington Posts: 102	Re: thoughts on my exhaust design on my 87 GMC crew cab long bed dually Unless its a Built motor that probably going to be too much exhaust. A single 3" is usually plenty on stock or even slightly built motors in my opinion. Single 3" on my 454 trucks. __________________ 1987 GMC V3500 Sierra Classic