Any dyno tests for SLP Tri-Y vs 4-1 ?
Thread Starter
Joined: Dec 1999
Posts: 3,544
Likes: 19
From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
Any dyno tests for SLP Tri-Y vs 4-1 ?
I know this is a long shot but im curious if anyone has any article with Dyno tests for comparing the headers ( Tri-Y, 4-1 3/4 and 4-1 5/8 ) Tri-Y has the potential to offer more HP and TQ but has to be properly tuned for a specific RPM range.
Joined: Oct 2001
Posts: 12,221
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Any dyno tests for SLP Tri-Y vs 4-1 ?
I have a tri-y test someplace but neither of them together. They both run a 2.25 inch Y pipe so the results should be close
Thread Starter
Joined: Dec 1999
Posts: 3,544
Likes: 19
From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
Re: Any dyno tests for SLP Tri-Y vs 4-1 ?
I had thought about doing this using my sets but i would expect it to be more useful on a stock TPI 350 plus I'm sure it would be a waste of money with the fooling around on an engine dyno. This is something Hotrod or similar could have done when these cars were newer and looking for the fun of lets see what happens type of article
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Apeiron
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Feb 3, 2008 02:10 PM