DeWitts (Yes, again!)

[William F.]

Re: DeWitts (Yes, again!)

If everything is right on a'67 390 hp big block with air, clean cooling system, correct timing, fan clutch working, were there overheating problems when new or would expect overheating with the DeWitts "Restoration" radiator- the copper brass clone of the original as opposed to the "direct fit" which is aluminum?

[Joe L.]

Re: DeWitts (Yes, again!)

If everything is right on a'67 390 hp big block with air, clean cooling system, correct timing, fan clutch working, were there overheating problems when new or would expect overheating with the DeWitts "Restoration" radiator- the copper brass clone of the original as opposed to the "direct fit" which is aluminum?

William-----


I can tell you this much: way back in 1969 when the cars were new, I had other friends that had 1969 Corvettes with L-36 and L-71. They reported cooling problems even then. I recall it distinctly because I thought to myself that's another reason I did the right thing by getting a small block.

[William F.]

Re: DeWitts (Yes, again!)

But didn't 69's have ported vac and lazy advance for emission control? If so, that could have contributed to the overheating.

[Joe L.]

Re: DeWitts (Yes, again!)

But didn't 69's have ported vac and lazy advance for emission control? If so, that could have contributed to the overheating.

William------


Yes, they did. That may have contributed to the overheating problem. My general "rule-of-thumb", though is this: you can never have too much cooling capacity for a Corvette big block. The more, the better, even if it only amounts to "reserve capacity".