Throttle Body Questions
Thread Starter
Racer
Joined: Aug 2000
Posts: 400
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From: Irmo, S.C
Throttle Body Questions
With my mods listed below, would the 58mm TB offer anymore gains or response than the 52mm. Can/should the intake manifold be ported to match with the 58mm. Is there any reason not to do this vs. the 52mm tb?
Thanks,
Jason
[Modified by 97Supra, 10:07 PM 5/2/2002]
Thanks,
Jason
[Modified by 97Supra, 10:07 PM 5/2/2002]
Team Owner
Joined: Sep 2001
Posts: 62,146
Likes: 1,730
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Throttle Body Questions (97Supra)
a 52mm wont even do you any good really, so a 58 would be worthless
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Throttle Body Questions (97Supra)
I added a 52mm TB when I ported my plenum because the target is in the high 300s hp wise and it will be useful up there. It won't hurt with fewer mods and you may get alittle better throttle response. But for $300 you won't notice much if any gain.
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Brett Foote
Safety Car
Joined: Mar 2000
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From: Springfield VA
Re: Throttle Body Questions (97Supra)
Everyone has their own opinion and most responses will probably be just that.
Mine is that a 58mm TB is a waste of money and my guess would be that you would lose performance.
I am running a 222/230 cam, 215 heads, hooker long tubes, TPIS mini ram, and 30# injectors on my 396 and its doing great with a 52mm.
Mine is that a 58mm TB is a waste of money and my guess would be that you would lose performance.
I am running a 222/230 cam, 215 heads, hooker long tubes, TPIS mini ram, and 30# injectors on my 396 and its doing great with a 52mm.
Race Director
Joined: May 2001
Posts: 14,165
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Re: Throttle Body Questions (96LT1)
My opinion comes from my dyno graphs that shows me a 4 hp loss with the 52mm throttle body.
Now it was a different dyno on a different day, so I can't say for sure if the loss was caused by the TB, but there certainly wasn't any gain.
Now it was a different dyno on a different day, so I can't say for sure if the loss was caused by the TB, but there certainly wasn't any gain.