what kind of gains would i see from custom fabbing a tubaler turbo mani. apposed to the cast one. should it just be a future project.

 

faster spool time. better flow, less backpressure.

recommended if you can find some1 to do it for you.

carl.

p.s. keep the flange divided.

 

whats a divided flange? both "tubes" have there own hole in the flange?

 

The downside is it is prone to cracking.

 

right on, tubular manifold for daily driving= cracked manifold......cast iron manifold for daily driving= reliability!!!!!!

well lets see i make 730rwhp with a cast iron open manifold.... is that enough hp? and its from the 80s(bae) and no cracks yet!!