Headers

Murphy · 03-02-2019, 09:59 AM

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

Billy Nees · 03-02-2019, 10:23 AM

THAT depends a lot on the combo.

Be better off talking politics.

Ralph A Powell · 03-02-2019, 10:23 AM

Quote:

Originally Posted by Murphy

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

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

1299 · 03-02-2019, 07:20 PM

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

Murphy · 03-02-2019, 09:33 PM

Super stock 255/294 350 sbc auto.

Alan Roehrich · 03-02-2019, 11:08 PM

Quote:

Originally Posted by Murphy

Super stock 255/294 350 sbc auto.

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.

Billy Nees · 03-03-2019, 08:17 AM

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

Glenn Briglio · 03-03-2019, 08:31 AM

Quote:

Originally Posted by Alan Roehrich

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.

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

Larry Hill · 03-03-2019, 10:02 AM

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.

Alan Roehrich · 03-03-2019, 12:49 PM

Quote:

Originally Posted by Glenn Briglio

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

03-02-2019, 09:59 AM	#1
Murphy Junior Member Join Date: Apr 2003 Posts: 45 Likes: 15 Liked 1 Time in 1 Post	Headers The question is to tri y or not to tri y ?

03-02-2019, 10:23 AM	#2
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,221 Likes: 3,095 Liked 6,784 Times in 1,522 Posts	Re: Headers THAT depends a lot on the combo. Be better off talking politics. __________________ Billy Nees 1188 STK, SS World's greatest Under-Achiever!

03-02-2019, 07:20 PM	#4
1299 Member Join Date: Aug 2009 Location: howell,nj Posts: 116 Likes: 238 Liked 16 Times in 9 Posts	Re: Headers Tri-y will make more low end tq. In what I have see.

03-02-2019, 09:33 PM	#5
Murphy Junior Member Join Date: Apr 2003 Posts: 45 Likes: 15 Liked 1 Time in 1 Post	Re: Headers Super stock 255/294 350 sbc auto.

03-03-2019, 08:17 AM	#7
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,221 Likes: 3,095 Liked 6,784 Times in 1,522 Posts	Re: Headers ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ __________________ Billy Nees 1188 STK, SS World's greatest Under-Achiever!

03-03-2019, 10:02 AM	#9
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,277 Likes: 1,635 Liked 9,452 Times in 1,956 Posts	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. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817