Headers
 

The question is to tri y or not to tri y ?

Re: Headers
 

THAT depends a lot on the combo.

Be better off talking politics.

Re: Headers
 

Tri-y if you are willing to do a lot of of dyno testing to get the max benefit

Re: Headers
 

Tri-y will make more low end tq. In what I have see.

Re: Headers
 

Super stock 255/294 350 sbc auto.

Re: Headers
 

Tri-Y or 4-2-1 headers will require an entirely different camshaft development program, and possibly both a torque converter and rear gear change, as compared to a regular 4 into 1 header. Otherwise, you just have an expensive set of headers that make your car slower.

Re: Headers
 

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Re: Headers
 

Ok so what would be the differences in combinations of parts when using the two different headers?

Re: Headers
 

Our Tri-Ys were better than the Davis steps on the track and dyno. We might have been just lucky. Later we rolled the cam around and found a little more.

Re: Headers
 

Briefly, the intake/exhaust bias on the camshaft will be different, and likely the LSA as well. The torque curve will be different, possibly requiring a change to the torque converter. And the change in the RPM bands may require a gear change. It requires considerable testing and development, you can't just give specifics off the top of your head. And then you have to realize that the dyno may not tell you what it wants at the track.