Fox Afr Rocker Arm Studs

I personally prefer ARP fasteners and hardware over any other brand, but that's just me. If you trust your engine builder and he stands behind what he sells then use his recommendation.
For me, something like this is what I would be looking for if I were you. http://www.summitracing.com/parts/arp-100-7101/overview/
These studs are .150 longer in the rocker stud area and allow for a little more thread engagement in the rocker adjusting nut. These are reasonably priced for a decent set of studs. If you are turning some high rpms or using unusually high spring pressures then look at upgrading to a pro series stud but I don't think that would be warranted. As far as the rockers go, they are some bad mothers! I am actually using the comp pro magnums on my car as we speak. I had a failure with the shaft rockers that I had and in a pinch put them on. We have turned 8650 rpms on the track and they have been flawless. They have worked so well that I don't think I'll be putting the shaft rockers back on any time soon.

Pretty sure the ones 84ttop posted are the same one's I have on my 205's. Also running comp pro mag rockers. Seen 7400 rpm so far. Did you do titanium retainers also?

I upgraded t0 ARP 134-7104 rocker studs after breaking one on my AFR 185 heads which are know to fail im using comp pro mag rockers also
Summit Racing Part Number:ARP-134-7104

UPC:672036002091

Base Thread Size:7/16-14 in.

Rocker Arm Nut Thread Size:3/8-24 in.

Guideplate Locator Shank:Yes

Rocker Arm Nut Thread Length (in):1.000 in.

Effective Stud Length (in):1.895 in.

Base Thread Length (in):0.710 in.

Quantity:Sold as a set of 16.

Notes:Fits most Small Block Ford with 3/8 screw-in studs. Machine work may be required.

RangerJoe said:

Nick,

I see those are 1.9" of over all stud length. Are you saying that these are .150 longer than stock? I thought the AFR's were 1.87". I was thinking I needed something in the 2" range. I just want to make sure I understand what I am looking at before I buy.

Thanks again!

Joe

Click to expand...

the measurements can get all goofy rather quickly. even though the stud I posted is still 1.9" overall length, they take .100 away from the lower stud and add it too the upper portion of the stud. This gives you .750 instead of .850 engagement into the head which is still more than enough and allows for a longer stud with more engagement on the locking nut for the rocker