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

72BLAZERDUDE · 07-04-2002, 06:12 PM

I am getting ready to replace the exhaust system on my 72 2wd blazer. Its got a stock 307 that has original manifolds. It was converted to dual exhaust with a crossover tube. I really haven't decide what to do. Should I keep my stock manifolds or go with a different one. I'm thinking about staying away from headers just for the maintenance problems. I'm not sure about what mufflers to use. I'm rebuilding a 350 right now. Probably about 350 hp. So I have to take that into consideration. I do have to replace the exhaust now because it leaks at the mufflers and with a blazer you get fumes in the cab. I'm in the process of doing a 4/6 lowering on it so the exhaust will be tucked up as close to the underside of the body as possible with some type of heat sheilding. Also what are the advantages / disadvantages to a balance tube an d where should it be located. I realize that this a long post but I believe in doing it right the first time. I know everybody has an opinion on this so fire away.

chevyman 68 C/10 · 07-04-2002, 07:42 PM

A good set of headers with copper or aluminum gaskets are virtualy trouble free. With a veiw toward milage and power they are going to be hard to beat.
A pair of flows and a cross over pipe and you will be awsome.

The key is to buy good headers (preferably coated)

chevyman 68 C/10 · 07-04-2002, 07:45 PM

Sorry I forgot running your pipes through your cross member keeps them close to your truck

07-04-2002, 06:12 PM	#1
72BLAZERDUDE Registered User Join Date: Jan 2002 Location: WATAUGA,TX Posts: 660	Exhaust System I am getting ready to replace the exhaust system on my 72 2wd blazer. Its got a stock 307 that has original manifolds. It was converted to dual exhaust with a crossover tube. I really haven't decide what to do. Should I keep my stock manifolds or go with a different one. I'm thinking about staying away from headers just for the maintenance problems. I'm not sure about what mufflers to use. I'm rebuilding a 350 right now. Probably about 350 hp. So I have to take that into consideration. I do have to replace the exhaust now because it leaks at the mufflers and with a blazer you get fumes in the cab. I'm in the process of doing a 4/6 lowering on it so the exhaust will be tucked up as close to the underside of the body as possible with some type of heat sheilding. Also what are the advantages / disadvantages to a balance tube an d where should it be located. I realize that this a long post but I believe in doing it right the first time. I know everybody has an opinion on this so fire away.

07-04-2002, 07:42 PM	#2
chevyman 68 C/10 Registered User Join Date: Feb 2002 Location: Gilmer, Texas USA Posts: 313	A good set of headers with copper or aluminum gaskets are virtualy trouble free. With a veiw toward milage and power they are going to be hard to beat. A pair of flows and a cross over pipe and you will be awsome. The key is to buy good headers (preferably coated) __________________ 69 Chevy short fleet side soon to have LT1 and 4L60E pb. ps cruise and air. 68 Chevy short fleet side 400 sb 5 inch chop top pb. ps. pw. 350 auto and shaved handles 68 anniversary no engine long wheel base 400 auto FOR SALE 68 Chevy fleet side long wheel base complete parts truck.

07-04-2002, 07:45 PM	#3
chevyman 68 C/10 Registered User Join Date: Feb 2002 Location: Gilmer, Texas USA Posts: 313	Sorry I forgot running your pipes through your cross member keeps them close to your truck __________________ 69 Chevy short fleet side soon to have LT1 and 4L60E pb. ps cruise and air. 68 Chevy short fleet side 400 sb 5 inch chop top pb. ps. pw. 350 auto and shaved handles 68 anniversary no engine long wheel base 400 auto FOR SALE 68 Chevy fleet side long wheel base complete parts truck.



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