Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: 68 Camaro 468 B/B running hot
Nothing wrong with old school stuff, many times it works , better.
I would first check to see that you do have the curved bypass hose from intake to water pump.
I would also like to see that temp gauge mounted in the intake. I know the heads are the hottest place to take a temp readings and this can drive some people nuts.
I would get a good mechanical gauge for this. Autometer or SW.
You did not mention radiator size or tube and size. I don't like electric fans (new school), but many people run them. I use a factory sized 23" wide two row aluminum with the stock shroud and fan blade/clutch.
If you still have cooling issues, Yes, look at the heads. Your Wiend pump is probably good, as its probably made like my Stewart pump.
Oh, something John said about the water pump impeller, check to see if the impeller appears to have a back to it, correct wording is "closed impeller. Most of the high dollar pumps are made this way and they stop water cavation . Best understanding of this is the fishing boat guys that have hydrofoil plate , covering their outboard motor props.
Long ago I made one and installed it on an open impeller pump, made world of differance. Cost $6 vs. $100 for a so called hi flow pump.
Oh , one other thing, check to see what crank/ pump pullies you may have , sometimes you can mismatch them, thus causing the water pump to crank drive ratio off. Good luck.
You did not mention if you know for sure, if the water pump is rotating the right way? Not serpentine set up?
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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