Exhaust manifold temperatures?
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Joined: Jan 2001
Posts: 7,164
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From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Well, if the headers don't get that hot, then the 1200* ceramic coating spray paint I bought doesn't hold up to it's claim.
Supreme Member
Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
That's because they're ceramic coated. My brother just told me that manifolds get hotter than headers. They get about 10-40* hotter because they're made of cast iron and that holds heat.
Last edited by Mark A Shields; Dec 22, 2001 at 08:42 AM.
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
I used a digital infrared thermometer on my headers, and temps were around 450º F. Sorry thats not manifolds, but it gives you an idea.
Supreme Member
Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Well, then those headers were not warmed up, or you have them coated. What do your thermometers go up to, the most I've seen was 400*.
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
With a thermocouple on the outside of my headers I've never seen it much more than 450 either. If they were 1200F they'd be glowing red.
Last edited by Apeiron; Dec 24, 2001 at 10:06 PM.
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