Throttel Bodies

[enforcer GT]

I have a 2000 grand prix GT and i was wondering if it was possable to fit a GTP TB on it. And if i coud how would i go upon doing so.

[richtazz]

there is no reason to do this swap, as it will provide no performance advantage.

[BNaylor]

Personally, I do not believe that the GTP throttle body will mate up correctly to a Series II 3800 NA upper intake manifold and you have to consider you'll be using the GTP's TB gasket but I could be wrong.

I do not know of anyone locally or on the forum who has ever done this.

Just my 2 cents.

What say you, Rich?







Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

[richtazz]

look above ya on this thread Bob.

[regalfriend]

even the TB upgrade on the 3800 S/C would become a later mod to have any benefit. Its overkill...3800 N/A is better off with CAI, some exhaust work,re-program, and maybe a shift kit. BNAYLOR or RICH, any input?

[BNaylor]

Originally Posted by regalfriend

even the TB upgrade on the 3800 S/C would become a later mod to have any benefit. Its overkill...3800 N/A is better off with CAI, some exhaust work,re-program, and maybe a shift kit. BNAYLOR or RICH, any input?

I agree Regalfriend, however, you specifically would benefit from a larger 72mm throttle body considering you already have a L67, especially when you go to a smaller pulley size on the SC.

I agree with Rich that a 69 - 72mm TB would probably not help a NA Series II 3800....might even hurt performance like throttle response.

The stock TB for a GP GT is 65mm. ZZP has a Stage 1 TB for the L36 which is 68mm.

Are you planning on modding your Regal GS?







Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.