Crank Pulley Bolt Size

[rdf]

Anyone know the size of the 6 bolts for the crank pulley?  I got these from 440 Source but they don't fit...they go in about 3/4 of a turn and that's it.

http://store.440source.com/Crank-Pulley-Bolt-Kit/productinfo/101%2D1076/

I found this image of another site of a guy who broke down a 440 but these bolts don't fit either:

[Chryco Psycho]

Could be fine thread instead , what make is the crank pulley ?

[rdf]

It's from 440 Source as well:

http://store.440source.com/Double-Groove-Crank-Pulley-New-Reproduction/productinfo/132%2D1001/

[Chryco Psycho]

Sorry I meant to say the damper where the threads are ?
The factory dampers would take the bolts you show in the original post , aftermarket is anyones guess what threat is used , I would try a 5/16 fine thread bolt as it seems 5/16 is the correct size if it starts to thread in

[rdf]

Sorry I meant to say the damper where the threads are ?
The factory dampers would take the bolts you show in the original post , aftermarket is anyones guess what threat is used , I would try a 5/16 fine thread bolt as it seems 5/16 is the correct size if it starts to thread in

Hmmm, I don't know on the damper but we did what you suggested (luckily I have a nuts & bolts assortment that I bought a while back) and we were able to find the right ones.  Thanks for the quick responses and help