Re: Transmission cooler or new rad?
I would bet that the I6 radiator is less effective than a stock v8 radiator (less cores if not smaller dimensions). That, right there, is enough to warrant a new radiator. Unless you plan to put the truck through some heavy trailer pulling or racing, you don't need an external tranny cooler. I personally don't think a cooler can hurt, but it needs to be in conjunction with a radiator, not alone.
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He who is without oil shall throw the first rod. Compressions 8.7:1
1972 C10
1976 C10 (parts truck)
1985 K20
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