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-   -   High idle - no vacuum leak (http://zr1.net/forum/showthread.php?t=27477)

cbaclawski 02-05-2017 11:34 AM

Re: High idle - no vacuum leak
 
Quote:

Originally Posted by secondchance (Post 257065)
Unfortunately this is a mis-match. TB on J C Whitney is for non-LT5 vette - most likely LT1.
I looked up BBK website and they do not offer TB for LT5.
http://www.bbkperformance.com/produc...?car_motor_key[]=1503&car_motor_key[]=1514&category_key=2&left_select_reset=1

Thanks so much for doing that.

Is there a place to buy one that will fit?

A1990 02-05-2017 11:37 AM

Re: High idle - no vacuum leak
 
Chances are with your 368 the DAG was long gone before you cleaned the throttle body. As it was probably enlarged to 63mm.

The other guys are correct, you are not going to find a LT5 throttle body unless its at Jerry's or on eBay, etc.

The good news is Marc will rebuild your throttle body, if indeed that is the source of the vacuum leak, and have it back to you within a couple days. I had Marc rebuild mine. I pulled it off and sent it to Marc. He had it the next day and rebuilt it, then put in back in the mail and I had it the next day. I was down for about 3 or 4 days total.

Good luck.

lfalzarano 02-05-2017 11:48 AM

Re: High idle - no vacuum leak
 
Ditto for Marc.


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cbaclawski 02-05-2017 11:52 AM

Re: High idle - no vacuum leak
 
Quote:

Originally Posted by A1990 (Post 257068)
Chances are with your 368 the DAG was long gone before you cleaned the throttle body. As it was probably enlarged to 63mm.

The other guys are correct, you are not going to find a LT5 throttle body unless its at Jerry's or on eBay, etc.

The good news is Marc will rebuild your throttle body, if indeed that is the source of the vacuum leak, and have it back to you within a couple days. I had Marc rebuild mine. I pulled it off and sent it to Marc. He had it the next day and rebuilt it, then put in back in the mail and I had it the next day. I was down for about 3 or 4 days total.

Good luck.

That makes me feel better, thanks! I'm going to pull the plenum again and double check for leaks, get a better look at the throttle body, etc...

I've done it before, but i'm a little confused regarding draining coolant.. The other times I've pulled it I didn't do that. How/how much should I drain?

anyone have a link for the correct procedure?

Thank you guys so much for helping me!

ssrszz4 02-05-2017 04:19 PM

Re: High idle - no vacuum leak
 
How much did he charge for rebuild?

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Dynomite 02-05-2017 04:26 PM

Re: High idle - no vacuum leak
 
Quote:

Originally Posted by cbaclawski (Post 257072)
That makes me feel better, thanks! I'm going to pull the plenum again and double check for leaks, get a better look at the throttle body, etc...

I've done it before, but i'm a little confused regarding draining coolant.. The other times I've pulled it I didn't do that. How/how much should I drain?

anyone have a link for the correct procedure?

Thank you guys so much for helping me!

Oh......just drain about a gallon should be plenty....if you remove radiator...drain radiator until it is empty. Then replace what you drained and fire it up :D

Have two new Plenum Gaskets on hand.

The Injector Housing Coolant Manifolds should get warm within a minute or two.

I would say Block TB Coolant at Injector Housing but I have found very few see the real advantages of that on this forum except for myself :sign10:

Same goes for Battery Disconnect and making your own oil Cooler Lines :sign10: :sign10:

cbaclawski 02-06-2017 04:12 PM

Re: High idle - no vacuum leak
 
Quote:

Originally Posted by Dynomite (Post 257100)
Oh......just drain about a gallon should be plenty....if you remove radiator...drain radiator until it is empty. Then replace what you drained and fire it up :D

Have two new Plenum Gaskets on hand.

The Injector Housing Coolant Manifolds should get warm within a minute or two.

I would say Block TB Coolant at Injector Housing but I have found very few see the real advantages of that on this forum except for myself :sign10:

Same goes for Battery Disconnect and making your own oil Cooler Lines :sign10: :sign10:

Thanks! Hopefully the gaskets good, I just had it apart 3 weeks ago!!


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