Small Block in an early A - how much room for a fan?

Just my 2 cents...

64 had a 273 ( small block) option. If you collect all the STOCK parts it will fit in without any issue.

Now toss in an aftermarket AL rad (not needed) and clutch drive fan (not needed) and you are in for a time.


Find a stock 64 small block radiator have it recorded with AC or HD cooling core. Be sure it has drivers side outlet on the bottom and drivers side inlet on the top.


Get a pass side bolt on timing mark

Get a 64 to 69 cast Iron water pump if going with an AC / HD cooling water pump be sure your pullies match. Standard cooling was most likely under driven by 10 percent or so. AC / HD would be overdriven

Get a fixed 7 blade fan, look for AC / HD cooling part number.

This way EVERYTHING will work as the engineers designed AND in the future getting replacement parts will be simple