Engine Comp Cams 4504-16 Rocker Arm Stud Torque?

[markinms]

I see where this was asked in the past but never got an answer.

Does anyone know what the correct torque is for the Comp Cams 4504-16 Rocker Arm Studs? Cannot find anywhere.

Thanks!
Mark

 

[JD1964]

The same question is asked and answered in the Q and A section on this Summit page. 13 ft/lbs oiled

https://www.summitracing.com/parts/cca-4504-16

 

[markinms]

Thanks for the reply.

I also found this reference after posting here, but to me 13 ft-lbs seems a bit low. By the way, this is the ONLY place I could find anywhere that had a torque value posted for the Comp Cams Rocker Arm Stud, including the Comp Cams website.

On another site, a user stated that Comp Cams Rocker Arm Studs are made by ARP. If this is true, ARP's stated torque value is 28 ft-lbs, a big difference.

For now, my engine assembly is on hold until Comp Cams opens back up on Jan 4th. Once I get the torque value from them I can finish things up and post what what they tell me here for others to know as well.

Once again, thanks for the feedback!

Happy New Year!
Mark

 

[JD1964]

Keep in mind that the end that goes into the head is only a 5/16” course thread which is a low tq value fastener in the first place. There also could be a different rating based on the head being either iron or aluminum.

 

[markinms]

Someone on Amazon asked about torqueing these rocker arm studs and the answer was 50 ft-lbs for aluminum heads and 55 ft-lbs for cast iron. This seemed way to high for a 5/16" stud.

I learned the Comp Cam rocker arm studs are made by ARP. According to their specs, torque on a 5/16" should be between 24-30 ft-lbs.

Finally was able to talk with a Comp Cams Tech Support Person. He confirmed their rocker arm studs are made by ARP. He also suggested the torque be 30-35 ft-lbs based on his experience, not actual recommended torque value for the specific product.

So, 4 different sources, 4 different torque specs for the same item (not to mention the various forums I asked for help on). This has been total BS!

I'm going with the recommendation from Comp Cams of 30-35 ft-lbs. I just hope the Tech Support Person knows what he's talking about.

Mark