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#1 |
Senior Member
Join Date: Apr 2002
Location: Beaverton, OR
Posts: 1,615
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Big Block Operating Temperature Question
Is 225 degrees F. too high as a normal operating temperature for a 454 Big Block engine?
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Mitch 1978 Chevrolet Silverado C 10 454 BB, TH400 |
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#2 |
www.73-87chevytrucks.com
![]() Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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That seems a little high to me. Mine stayed around 180-190 in the summer.
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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#3 |
Registered User
Join Date: Nov 2002
Location: Dallas
Posts: 459
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I had a chevy dealer tell me the norm for a 454 was 210 degrees. I had a 90 chevy dually 1 ton with a 454 i thought was running hot so i changed the thermo and flushed the cooling system and nothing changed so I asked them and thats what they said.
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Steve 86 K30 4x4 6.2L Diesel\TH400\NP208 - 14bolt FF rear w/detroit locker and Dana60 front w/detroit locker- both with 4.56 gears "Runs on Mud" |
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#4 |
Registered User
Join Date: Nov 2002
Posts: 272
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I'm with Kaos, I keep mine @ 180. But when I pull something it tends to run 195-200 .
Most fuel injected engines fuel & timing maps are based around 210. I'm probably wrong but I think a thermostat over 195 for a carb engine is too hot |
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