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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Throttle bodys........ What are you using?

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Old 07-04-2007, 12:55 PM
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I run a 58MM BBK, but it's really only because it was already on my car when I bought it.
I run a ported manifold with my LE H/C package.

No idle issues
Last edited by James Montigny; 07-04-2007 at 01:05 PM.
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Old 07-04-2007, 01:03 PM
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I'm running the Holley 58mm throttle body. No problems.
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Old 07-04-2007, 01:18 PM
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My 52mm bbk used to get stuck open all the time. Pain in the ***.
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Old 07-04-2007, 05:53 PM
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58mm Summit, looks like a really nice piece sees to work well. although my IAC counts are high not sure if it is because of a vacuum leak or something?
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Old 07-04-2007, 06:04 PM
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AS&M 58mm and before that had 52mm BBK/Edelbrock. never any problems with either.
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Old 07-05-2007, 08:33 AM
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I am running a stock t/b bored to 52mm with a matching airfoil. Got that done and it powdercoated black to match the slp intake for less than an aftermarket 52mm.
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Old 07-05-2007, 09:39 AM
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58mm Holley here with a LE ported/welded intake manifold.
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Old 07-05-2007, 09:59 AM
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58 Holley... no idle issues. LE2 H/C.
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Old 07-05-2007, 10:33 AM
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My plan is using a monoblade. Not ever owned but have driven a few cars with them.
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Old 07-05-2007, 11:57 AM
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Originally Posted by LT Malice
has anyone used the summit racing brand 52mm or 58mm throttle bodies?
i am running the summit 58mm, have had no issues whatsoever, its even pretty and polished. ive heard more bad than good about bbks products.
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Old 07-05-2007, 12:49 PM
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Take a look at the professional products line...thats what I am doing, anyone have any issues with them?
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Old 07-05-2007, 01:08 PM
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I had a 52mm Holley and now have a 58mm Holley. No problems with either one, they both work great with nice gains.
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Old 07-05-2007, 02:05 PM
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I've been running the Lingenfelter 58mm TB since 1995...Great TB with zero issues, but $$$

--Alan
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Old 07-05-2007, 04:31 PM
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Holley 52mm here.. no issues other than TPS sensor not reading right since the swap...
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Old 07-05-2007, 06:50 PM
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Arizona Speed & Marine 54mm unit... very nice!!
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Old 07-05-2007, 07:03 PM
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I'm running the Holley 58mm throttle body with no problems but I would rather have the Arizona Speed & Marine 58 it flows the most out of all brands.
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Old 07-05-2007, 07:23 PM
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Summit Racing 58mm here. Love the performance. Idles smooth as hell. Looks real good being polished and all. I would highly recommend it to anyone. Heard alot of bad about the BBK units.
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Old 07-06-2007, 07:33 AM
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I will look into summit just to see what they have. I did not even know they sold their own brand of LT1 throttle bodys. I just like the look of Holley.
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Old 07-06-2007, 07:50 AM
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Originally Posted by Formula350
Holley's have problems is why. They stick. I ran a BBK on my TPI and had zero problems. I'll be using the same one on my LT1 once I get it bored to 58mm.
As far as I know stockers can only be bored to 52mm...

I run an ASM 58mm with a ported intake, h/c etc... It's fantastic, feels amazingly better than the stocker. I would easily recommend the ASM as the top quality throttle body for our cars.

Edit: I heard of too many sticking issues with BBK and Holley, you get what you pay for...
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Old 07-06-2007, 02:31 PM
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Looking back, I would have bought an AS&M over my BBK. Granted I haven't had any issues with the BBK, but I agree the AS&M is nice. If the Summit had been available at the time, I'd have bought it.
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