How much to make 351c 4v heads accept adjustable rockers?

Hey ou812 do you know if aftermarket pedestal roller rockers can handle a cam like the comp XE284H with 240/246 dur and .584/.588 lift?

The guy at the machine shop here wants 300 dollars or more to make my heads accept screwin studs.
[addsig]

If you were to use a Comp beehive spring in that application, it would work fine. Hyd lifters are really not meant for high rpm, so if you kept it below 6000 rpm or right around the 6000 rpm limit then you should be fine. What happens with the bigger cam, is you need springs that can handle the cam and that places a strain on the stock sized bolts. Using the beehives, you can gain control without having to use excessive spring pressure which should work well up to or around 6000 rpm. That's what I would do cause $300 is too much for that little machining.
Brian
[addsig]

Thats helpful info, seen you at Speedtalk too, great to have you help others like us out!

Thank you so much for the advice ou812. I'm going to try and search for any other machine shops before I make my final decision though.
[addsig]

I work in machine shop and I charge $150.00 to cut and tap the heads. I race a 351c and i have cut a few sets for myself over the years. Located in Mobile Ala.

SUMMIT HAS SOME STUDDS THAT BOLT RIGHT IN FOR THE CLEVELAND I HAVE THOSE ON MINE AND THEY WORK GREAT

Crane Cams 52655-16 - Crane Rocker Arm Guideplate Conversion Kits - summitracing.com

The conversion guide plates and studs are fine if you keep the spring persure way down . You have to remember that cleveland 4V valves are heavy and they need stif springs to controle there weight . If you run to week of a spring and drop a valve it will do a lot more damage than what the machine work would cost . The 5/16 ends on the screw in studs are not heavy enough to handle a lot of stress.

Try this link Machining Pedestals - Clevelands Forever!