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

Using a Torch on LT4 Intake?

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Old 01-22-2016, 10:25 AM
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Question Using a Torch on LT4 Intake?

As I continue to battle trying to get this vacuum fitting plug out of the front of my intake that the previous shop put in, after trying to JB weld a nut onto it twice and that failing to get it to budge, I'm thinking the morons used red Loctite on this.

Looking over info on it, it appears it takes a lot of heat to break that down (500 degrees). I used my propane torch a little on it last night, but I don't really know how hot it got yet. But my question is if there's anything I should particularly worry about applying a torch right onto the intake. I could imagine some paint damage but at least that part is hidden by the throttle body and the thermostat.

Any thoughts on this?
Old 01-22-2016, 12:02 PM
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Yeah. The paint is gonna be screwed but if you take your time with the propane torch it should work fine. I use one to remove seized bolts in aluminum quite a bit.
Old 01-22-2016, 07:22 PM
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Originally Posted by Vicious95Z28
Yeah. The paint is gonna be screwed but if you take your time with the propane torch it should work fine. I use one to remove seized bolts in aluminum quite a bit.
Thanks for the info. It sucks, but I think I'd rather try that than drilling into the intake or removing it and risking causing a leak.
Old 01-22-2016, 08:37 PM
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Yea dude, hit it with the propane, I've done it, temp should only hit like 250, engines run at 220, I wouldn't sweat it...
Old 01-25-2016, 08:14 PM
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You probably could use map gas. Its a little hotter than propane. If you can get a hammer to the plug hit the plug its self a few wacks. That will do wonders alot of times.
Old 01-28-2016, 10:48 AM
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Heat and impact go a long way.




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