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1979 Chevy Corvette overheating

Tiny
BOHEMO2
  • MEMBER
  • 1979 CHEVROLET CORVETTE
  • V8
  • 2WD
  • AUTOMATIC
  • 72,000 MILES
I have a modified 350 ci (400+ HP) in my vette and am having trouble with it getting hot. I have put an Edelbrock high flow water pump on, a new 3 core radiator and even removed the thermostate but it still gets to 220 deg to 225 deg F after about 15 miles. I was wondering if the 2" duel exhaust could be creating too m uch back pressure and thus the overheating. The exhaust is the same as when the engine was stock at 195 HP.
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Sunday, July 27th, 2008 AT 3:58 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
I would check the timing first, then assuming the cooling system is good, take it to a chassis dyno (usually around $100) and have the air/fuel ratio measured with a wideband O2 sensor.
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Monday, July 28th, 2008 AT 7:45 AM

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