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The correct size is 3/8 x 3/4.
After 2 hours of trying to install the multi belt pulley over the original single pulley the 3 bolts holes will not align. My parts supplier told me that the multi belt pulley came from a 1970 F 100 my truck is a 1967.
Any ideas? I need help. the upper pulley aligns perfectly.
Thanks
John O. Salazar
cool glad I could help a bit. I have some pulleys from mine but its a 69 302. I will see what info I can get from a friend local. He's got some old tbirds I would think they would be close to same pattern but you never know, I had a hard time finding a correct alt tensioner for my 302 bought one from paw but wouldn't line up correctly so hit the local salvage yards.
I also may have a rebuilt 352 complete sitting next door, neighbor had one with all the stuff. I will see if I can catch him and see if the pulleys etc are there he wanted 50bux for the complete motor.
Im not sure but mine is just a single belt pulley looks like the pumps for that year also. What part isn't lining up? the pump belt to crank? mine is off at this point but i believe thats how its ran with no ac
The multi bottom belt pulley will not align with the single original belt pulley.
I am told by my parts supplier that the multi belt pulley attachés directly to the single belt pulley by 3 bolts, the holes on the pulleys will not align.
John O. Salazar
wow I'am kinda at a loss on it I will have to do some looking, I'am not real familiar with the 352 but if its ps bolts to the water pump on the side of it they do make different nose lenghts on the water pump, also they did and do make different multi belt pulleys. Mine is all single except the crank pulley of course like I said mine is a 302 so not sure how much difference ther is I know it had a 351 cleavland in it and it was all the same setup pulley wise except had a smaller water pump pulley and some chrome\
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