Ported Throttle Body.....with PICS. 56k OK. - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-10-2005, 11:12 AM   #21
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I've always thought that engines with larger throttle bodies have to have some tuning done to get everything running properly?
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Old 02-10-2005, 12:06 PM   #22
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If you think about it, it'* more of a turbulence/velocity thing.

The TB doesn't have that part at either end of it. The air just has to go around it, slowing it down and jumbling it around.
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Old 02-10-2005, 12:08 PM   #23
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Quote:
Originally Posted by Sol
I've always thought that engines with larger throttle bodies have to have some tuning done to get everything running properly?
the diameter of hte TB really has nothing to do with tuning. Its the Mass ariflow sensor thatwill do all the cailbration, for A/F. But yes if you put a larger TB with a different MAS then you will need the A/F cailbrator
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Old 02-10-2005, 12:27 PM   #24
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Quote:
Originally Posted by Sol
I've always thought that engines with larger throttle bodies have to have some tuning done to get everything running properly?
eh. i'd see it more as adding a cai or fwi... changing the amount of air you're taking in (on */c, anyway. on n/a, you're reducing the force required, and thus HP loss, to draw in the air).
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Old 02-10-2005, 01:14 PM   #25
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Quote:
Originally Posted by mkaake
and to third the notion, i've got a spare S1 L67 TB here at home...
What year? There were 2 sizes.
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Old 02-10-2005, 01:49 PM   #26
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by mkaake
and to third the notion, i've got a spare S1 L67 TB here at home...
What year? There were 2 sizes.
I honestly don't know. i bought it on ebay, advertised as a TB for an L67. I thought it was going to be a SII, but it wasn't... and I can't find a P/n on it anywhere to find out. if you have a dimension for me to check, i'll check it...

Well actually, I'll have theJMFC check it, since I left it at his house while we were doing my CAI...
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Old 02-10-2005, 04:45 PM   #27
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Quote:
Did this at work. LONG endmill on a Bridgport Mill, cleanum with a Dremel and by hand, then cleaned it all up in an Ultrasonic cleaner. It makes quite a difference visibly.
Hmm, A maglight with slightly expanded batteries, a TB and, what did I see in there, a SC casing?

I think we need to clean the cleaner.
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Old 02-10-2005, 04:48 PM   #28
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Yes, indeedy. I'm hoping some of your battery acid will help clean the SC, and possible loosen up my needle bearings a bit

That SC looks awefully funny sitting in that tank.
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Old 02-10-2005, 04:48 PM   #29
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Quote:
Originally Posted by MOS95B
Wow. Now, if only you had a tranny.....
Ooh, imagine slipping a brand new tranny in his ride.
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Old 02-10-2005, 04:49 PM   #30
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It'* coming. I'm getting the top end ready to further abuse the new trans. Old trans don't work too well with a big-*** hole in it.
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