tpi performance
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Instructor
Joined: Sep 2009
Posts: 110
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From: seabrook tx
tpi performance
Whats the most h.p you think you could get out of a factory tpi set up. ported or not. large tube runners or not. larger trottle body or not. an no super charger or turbo.
Race Director
Joined: Nov 2003
Posts: 12,220
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Low 300's to the rear wheels with large tube stuff, cam, and heads.
Possibly more if you're radical enough with porting (e.g., siamesing the base/lower runner walls).
Possibly more if you're radical enough with porting (e.g., siamesing the base/lower runner walls).
Safety Car
Joined: Feb 2000
Posts: 4,564
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From: Austin Texas
Mine was 326 HP, 399 lb/ft to rear wheels before the siamese porting...
355 cu/in, CNC ported 118 heads, 1.6 RR, Accel base and TPIS big tube runners.
Once we get the new Bosch3 injectors tuned, I'll be taking it back to see what I gained from that little exercise.
http://temp.corvetteforum.net/c4/joe90/index.shtml
Last edited by 1991Z07; Jan 11, 2012 at 11:13 AM.
Pro
Joined: Oct 2008
Posts: 706
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From: Jyväskylä, FINLAND
-Stock heads & cam
-1.6 RR
-ported&siamesed plenum
-siamesed stock runners
-Hedman LT headers
-dual 2.5" exhaust
-stock L-98 mufflers
308 hp @ 4650 rpm (at flywheel)
547 Nm @ 3 450 rpm (at flywheel)
With cam, ported heads and large tube runners a bit more... haven't got the numbers yet.
-1.6 RR
-ported&siamesed plenum
-siamesed stock runners
-Hedman LT headers
-dual 2.5" exhaust
-stock L-98 mufflers
308 hp @ 4650 rpm (at flywheel)
547 Nm @ 3 450 rpm (at flywheel)
With cam, ported heads and large tube runners a bit more... haven't got the numbers yet.
