Forced Induction Superchargers | Turbochargers | Intercoolers

What is a good IAT?

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Old Jun 23, 2006 | 08:15 PM
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Default What is a good IAT?

My 5.3L with 8.6:1 compression, stock cam, 15# boost with my homemade intercooler.
Right now my IC doesnt have much air flowing through it, I need to modify my bumper.
As of now my IAT runs around 102-105 making a full pass down the road.

It does start to pull timing also.
How does this look and what should it be?

Thanks.
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Old Jun 23, 2006 | 08:20 PM
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Dude, that really isn't that much considering you're running 15#, and that's on a front mount setup... those temperatures look pretty good with that high of boost. I've heard of people reaching close to 180-200F. You mean you're seeing some knock retard? How many degrees of timing do you have coming in, and what rpm are you seeing full boost? Are we talking about a manual car or automatic? Would like more details.
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Old Jun 23, 2006 | 09:25 PM
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Seems really good to me. I was hitting 180 deg @149mph (with small intercoolers).

Our shop car was at 145 degrees @ 153mph (Griffin front mount).
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Old Jun 23, 2006 | 10:04 PM
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If you can make a 1/4 mile run and stay below 120f I would say your intercooler is very good.

Kurt
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Old Jun 24, 2006 | 12:48 AM
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Th350 4000 stall, full boost at around 3800-4000 timing is at 9* & A/F is 11.4
This is a bone stock 5.3 shortblock, cam and all. just ported 6L heads. Bent a pushrod so im down for now. Other than that it seemed to run pretty good.
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Old Jun 24, 2006 | 12:49 AM
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You're golden man, more golden than I am I'm sure... Run it, you'll be fine with 102 to even 110F IAT's. Your timing is only 9 degrees, seems a little low... I would imagine with that compression, even at 15# you would be up around 16.
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