maniflolds

[jlat]

hello people; I don't know how the stock exhaust manifolds and exhaust components flow to the cat but besides getting these high $$ SS headers why not make a set of HI-FLOW cast manifolds and component upgrade.
What do you think.I know they'll never compete with a real header but I thought it might be a plus for a street car.
IBBY

 

[Real-T]

Here is a thread about a stock replacement solution from TA:

http://www.turbobuick.com/forums/ad...-stock-replacement-usa-headers-stainless.html

 

[Mike Licht]

cast manifolds would cost double the stainless headers because of the cost of tooling and machining at low quanities

 

[jlat]

hello people; Has anyone studied the stock exhaust manifold in the eyes of modification? Maybe there is a way to improve it. As I said I think headers can be a pain unless you want the best in exhaust flow.
IBBY

 

[87gninpa]

cast manifolds would cost double the stainless headers because of the cost of tooling and machining at low quanities

exactly, cast manifolds cost waaaay more to produce than stainless because of tooling. No way a vendor could get a large enough commitment to go forward with it.

 

[azbob]

TA took the time and increased the efficiency of the stock manifold design.