Anyone tried porting the throttle body a little? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-26-2002, 02:45 AM   #1
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Default Anyone tried porting the throttle body a little?

I read a post on the ClubGP about a guy who took a Dremel to his throttle body and made it a little larger and much smoother, mostly on the air filter side of the throttle body. He has the 3.4 engine, and said it made a big difference on throttle response.
Anyone here heard about doing that or tried it themselves?
He was pretty excited about how it turned out.
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Old 07-26-2002, 03:52 AM   #2
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I am pretty sure they have a larger unit out there probably from a LT1.

TY
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Old 07-26-2002, 04:52 AM   #3
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ZZPerformance makes a ported TB for the Grand Prix but its the same engine so it just bolts on. Check out www.zzperformance.com for more information on it. If you are an SE-SSE look for the L36 TB. If you are an SSEi look for the L67, they just bolt on and cost I think $150 or $200, something like that, but yes it does increase throttle response and give you quite a few extra HP but only if you have an intake and exhaust to make use of the larger TB and the extra plenum of air it provides.
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Old 07-26-2002, 06:49 AM   #4
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too bad zzp is gay about their core charge.... your core has to be from a new year L36, like 99 or newer. The core charge is like $200-$250. I can't remember exactly and their site is down right now....

so unless you have a newer bonneville, go to a junkyard and find a used newer TB to use as your core.


Lee
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