I talked to Joe at Jesel and he said that the SS shaft mounted rockers were not strong enough for nitrous assisted engines. He suggested using the next step up which is the CS shaft mounted rockers, which is a much stronger alloy than the SS uses. He said the cylinder pressure against the exhaust valve with nitrous, blower or turbo will cause failure. Anyone agree or disagree or have any suggestions? I will be buying a set soon and don't want to make a decision based on prices. Need help! Thanks for any input.
I have 383 11.8:1 , lt4 afr 210, solid cam/lifters, 250 shot, 4,000 stall Yank.

 

I've seen a few jesels bust the end/nose off.

I still have stud rockers but I think I'm going with T&D, they also have some better features...pressure oiling, but they are way more expensive

 

Don't the heads have to be machined down .125 for the pedastal to mount to on the T&D setup?

 

Call here:http:http://www.dreracing.com/
They build rockers for Comp also.

 

so what broke the nose off? jesel claims they are ok up to 800psi spring pressure and list nothing on the website that says anything on what kind of aspiration they will work on.

 

I don't know....It was a SBF W motor with a 400 shot on it. It busted the nose off halfway where the axle goes thru it.

It had 400# on the seat.....They didn't seem suprized it broke

 

400 on the seat is a nasty spring. We are only trying to run 225 on the seat and 500-550 open with 250 shot of nitrous.

t&d and jesel both use 2024 aluminum for the rockers.

 

I am running Jesels with 200 seat and 800 open.
No problems here.