85mm ported and polished Throttle body?
Thread Starter
On The Tree
Joined: Dec 2003
Posts: 104
Likes: 0
From: McAllen, TX
85mm ported and polished Throttle body? I am looking into trading my stock throttle body and $150 for a machined ported and polished stock throttle body. Is this too much?... the guy i plan on trading with says he paid $320 and gave up his stock throttle body for it. It is ported to 85mm and says it can shave .10-.15 off my 1/4 mile time. Anybody ported their throttle body that can share some info with me...and also, Is this too much?
Thread Starter
On The Tree
Joined: Dec 2003
Posts: 104
Likes: 0
From: McAllen, TX
Originally Posted by WILWAXU
Saw that TB on eBay... looks a like a hack job IMO...
TECH Fanatic
Joined: Jun 2002
Posts: 1,979
Likes: 3
From: Upstate NY
Originally Posted by Nasty N8
It is imposible to get the stock TB to 85mm it will come through the casting. The largest you need to go is 78mm thats the size of the opening on the intake.
Nate
Nate
You probably meant the LSX 78mm intake. Actually, the opening on them is about 77+ a little. Like the stock one, the openings are a little out of round (a few tenths of a mm anyway). The 90 checks at 90.
You can bore a stock TB to 78 mm, but you'll be very near the shaft bearings. You'll also "strike air" in a few places, or have paper thin walls in spots. Some of it depends on which supplier did the casting. I've never seen one bored to 78 that didn't need holes filled.
TECH Enthusiast
Joined: Nov 2002
Posts: 594
Likes: 0
From: Murrells Inlet, SC
I got a quote from a shop for porting and polishing my throttle body and they said it would be less than $100.00. So I would venture to say $150 is a bit high.
Originally Posted by TRAGIC
I am looking into trading my stock throttle body and $150 for a machined ported and polished stock throttle body. Is this too much?... the guy i plan on trading with says he paid $320 and gave up his stock throttle body for it. It is ported to 85mm and says it can shave .10-.15 off my 1/4 mile time. Anybody ported their throttle body that can share some info with me...and also, Is this too much?
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