Quote:
Originally Posted by 67ChevyRedneck
GM had 3 radiators with 2 different brackets. GM had a narrow bracket and a wider bracket.
The standard radiator was a 2 row. It used the narrow brackets and it also used those "inside" mounting holes your referring too.
The 3 row used the narrower brackets as well (if you've seen a factory two row, they look funny because they use the same tanks as the 3 row, but have one less core, so the tanks stick out like 1/2" past the core). The three row is wider than the 2 row and uses the same "outside" bracket holes as the 4 row.
The 4 row uses the wide brackets and the outside bracket holes.
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Just realized there are two provisions for a radiator, but only on the RH side. Good stuff, thanks for the info. I don't recall seeing a two row, but I'll look one up. Engine matters I suppose. I figured four row was standard for BBC, but probably figured wrong.