Header Temps
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Joined: Sep 2003
Posts: 988
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From: St. Louis, Missouri
Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Header Temps
Hi Guys,
I'm finally getting back to my 89 Formula 383. I took a laser temp gun and pointed it at each (ceramic coated) header tube and noticed some had a large temperature difference. Obviously, they will never be exactly the same but one showed around 300* while another was closer to 500*. Is this normal? Or does this indicate a fuel or valve issue?
Any input would be appreciated.
Thank you!
I'm finally getting back to my 89 Formula 383. I took a laser temp gun and pointed it at each (ceramic coated) header tube and noticed some had a large temperature difference. Obviously, they will never be exactly the same but one showed around 300* while another was closer to 500*. Is this normal? Or does this indicate a fuel or valve issue?
Any input would be appreciated.
Thank you!
Joined: Sep 2005
Posts: 27,904
Likes: 2,437
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Header Temps
Could be any of that.
Could also be just a difference in coating thickness, or in air flow over them.
Might want to check at various places along their length.
300° seems kinda low though.
Could also be just a difference in coating thickness, or in air flow over them.
Might want to check at various places along their length.
300° seems kinda low though.
Joined: Feb 2017
Posts: 4,174
Likes: 569
From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Header Temps
I have a home-made engine test stand. On it is my rebuilt 334 SBC. I did the same test as you and got the same result. My point being is that you probably DO NOT have any problem at all. Don't create one out of nothing.