PS pump and gearbox ?

[DJ72CHEVY]

I found a ps pump and gearbox, but , I don't know if they are from the same year model. From what year to what year will the pump and gearbox work together? I know somewear around 80' the fittings or threads went to metric. Any info. would be helpful.

[Tx Firefighter]

The secret is in the fitings on the lines. The early style is flare type and the later style is o-ring type.

You'll need a pump and brackets to fit whatever style of front engine brackets you're using, whether short or long water pump style.

The 1 inch fitting screws out of the back of the pump so you can convert a pump to which ever one you need, flare or o-ring, just by swapping the fittings around.

[DJ72CHEVY]

Thanks for the help. I went and looked at them, he has the gearbox but not the pump. He has two gearboxes, one from and 81 and one form 82. I don't know if there is any difference in the two, I can get either for about $35. I'll probably take one and find a pump later.

Thanks again.