HP & TQ Diff. between 1 78" & 1 3/4" headers
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From: Granbury Texas
HP & TQ Diff. between 1 78" & 1 3/4" headers I am thinking of swaping my TPIS headers and stock size mid pipe for a 1 7/8" Kook set-up with the 3" mid pipe. Has anyone done this and got any substantial gains?
A big motor at that power level needs to breathe. I would expect you'll gain in the mid-range and above with the swap. Of course better heads should help power everywhere.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
11 Second Club
Joined: Feb 2002
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From: Norcal
The previous owner of my vette added Kooks 1 7/8's when he put the the TEA ported AFR's and the 90/90 set up on. It picked up power everywhere...don't know how much the headers are reposnible for though, sorry
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From: Midland, TX
Originally Posted by beardWS6
More air flow=more power!
TECH Enthusiast
Joined: Sep 2004
Posts: 598
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From: Midland, TX
Originally Posted by David Gordon
I am thinking of swaping my TPIS headers and stock size mid pipe for a 1 7/8" Kook set-up with the 3" mid pipe. Has anyone done this and got any substantial gains?
