Water Pump Pulley and Jackshaft Pulley Bolt Sizes

LIVipers

Registered User
I am looking to dress up my engine compartment a little bit and want to change the bolts on the JS and Water Pump pulley's to match the overdrive and underdrive pulleys. Does anyone know the size of these bolts? I cant seem to find it anywhere. I know they are 5/16-24, but i dont know what length they are.

Tom
 
Last edited:
Suggest ARP 12 point

I used these for the water pump and jackshaft pulleys:

ARP-741-0750 BOLT 5/16 24X.75 12 PT 5 PAK 2 9101969001145071889748

...bought two packs from Summit, giving two extras. The black 12 points look nice, I think.
 
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