Pro Magnum rocker stud size help.
Thread Starter
Melting Slicks
Joined: Aug 2004
Posts: 2,920
Likes: 229
From: Oakbank Manitoba
Pro Magnum rocker stud size help.
Can anyone provide me with the correct ARP part number for the rocker studs when upgrading to a 1.6 ratio 7/16" Pro Magnum rockers. The trunions are thicker on this type of roller rocker and require a longer stud. There are too many to choose from.
Le Mans Master
Joined: Mar 2002
Posts: 5,889
Likes: 2
From: Castro Valley Calif.
St. Jude Donor '03 thru '26
Ken, I ran into this very same issue and I ended up calling ARP. I tried an e-mail at first, but they never responded. I've got the exact same parts in my motor as you do. I wish I could remember the part # darn it but it's been a few years & now I'm lucky to just find my way home.
Here's a bump for you though
Oh, almost forgot. Try George Kull or Jim Barth over in engine mods
Here's a bump for you though
Oh, almost forgot. Try George Kull or Jim Barth over in engine mods
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
I'm running ARP 134-7103 7/16" screw-in studs with my ProMagnum 1.6:1 RR, though I didn't notice if they were longer or the same length as stocks but they worked fine.
I wonder if the poly-locks sit lower in the trunion than did the OEM nuts in the stock rockers??
I wonder if the poly-locks sit lower in the trunion than did the OEM nuts in the stock rockers??
