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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | To have 1.25" fan to radiator clearance on a 48 is unheard of.
I suspect the radiator has been moved forwards.
Advancing the timing should help with cooling.
A bad vacuum advance can add to overheating.
Can you post a picture of your fan and radiator set-up?
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