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03-02-2019, 09:33 PM
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#1 |
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Re: Headers
Super stock 255/294 350 sbc auto.
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03-02-2019, 11:08 PM
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Veteran Member
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Location: Murfreesboro TN
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Re: Headers
Quote:
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.
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Alan Roehrich 212A G/S |
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03-03-2019, 08:17 AM
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#3 |
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Re: Headers
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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03-03-2019, 08:31 AM
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Re: Headers
Quote:
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1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop. |
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03-03-2019, 10:02 AM
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#5 |
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Live Reporter
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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.
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03-03-2019, 12:49 PM
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Re: Headers
Quote:
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.
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Alan Roehrich 212A G/S |
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03-03-2019, 08:38 PM
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#7 |
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Re: Headers
Thanks everyone
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03-04-2019, 08:29 AM
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#8 |
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Senior Member
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Re: Headers
A number of guys have found that they had to reduce the clearance in the dingle arm, when going from 4-into-1 to tri-Ys. Those that didn't experienced terrible Sinusoidal Refleneration, which is exactly like radial wobble, but different.
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03-04-2019, 08:43 AM
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#9 |
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Re: Headers
[QUOTE=nhramnl;583832]A number of guys have found that they had to reduce the clearance in the dingle arm, when going from 4-into-1 to tri-Ys. Those that didn't experienced terrible Sinusoidal Refleneration, which is exactly like radial wobble, but different.[/QUOTE
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Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table Last edited by jmcarter; 03-04-2019 at 08:46 AM. |
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