chevy57ray
Newbie
Posts: 1
Reg: 06-20-21
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04-24-22 01:25 PM - Post#2840260
355 cid SBC W/882 heads run Ok but température on exit at headers run about 420F except # 6 that shows 550F . Is there some things bad Somewhere ? I have the heads check up , nothing serious, change plugs, wires but still the same. Where should I look ? May leave it or try colder ac43 spark 
Ray
Edited by chevy57ray on 04-24-22 02:31 PM. Reason for edit: No reason given.
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Shepherd
Valued Contributor
Posts: 2554
Loc: Lake George, NY
Reg: 11-11-15
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04-24-22 02:25 PM - Post#2840262
In response to chevy57ray
Normally with everything running and tuned right exhaust temps don't vary by that much. But poor fuel distribution or a lean cylinder can cause this. If the car runs well, no sign of trouble and if you read the spark plug condition and it looks ok, leave it go.
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Tony1963
Frequent Contributor
Posts: 1286
Loc: Orlando Florida
Reg: 07-09-18
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04-28-22 02:38 PM - Post#2840421
In response to Shepherd
I agree. Not sure on a carbureted engine what would cause that but perhaps a gap in the intake manifold where the engine pulls in air around that intake runner that isn't going through the carburetor.
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 Rick_L
Member #409
Posts: 27981
Loc: Katy, Tx, USA
Reg: 07-06-00
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04-29-22 08:27 AM - Post#2840446
In response to Tony1963
100° temperature difference at idle is normal.
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