08-02-2009, 10:24 AM
There are at least 3 different water pumps early passenger side inlet, late drivers side inlet, and drivers side inlet for serpentine belt drive. There is also 3 and 4 bolt balancers for the 28oz motors. Then each has timing marks for drivers or passenger side inlet pumps.
The early motor will also have the dip stick in the pan if it is rear sump or in the timing cover if it is front sump. Your '90 model should have the dipstick in the side of the block.
The '60's heads will not have the AIR port in the rear and may have adjustable valve train.
Thirty years of technology does lead to a few improvements. I have a guy local that does my machine work. He used to charge $750 for complete 302 rebuild.
The early motor will also have the dip stick in the pan if it is rear sump or in the timing cover if it is front sump. Your '90 model should have the dipstick in the side of the block.
The '60's heads will not have the AIR port in the rear and may have adjustable valve train.
Thirty years of technology does lead to a few improvements. I have a guy local that does my machine work. He used to charge $750 for complete 302 rebuild.
'72 TBA...