[mgarblik]

You can talk to Tim Goolsby at Ultradyne/Bullet about exactly what your needs are. He is tough to get in contact with though. Just keep trying. Morning is best. Your biggest challenge is going to be finding a cam core to grind. I just a week ago ordered one of my favorite mild cams from them. 276/286 on a 112. That's a nice cam and makes good vacuum for power brakes and good torque for a heavy car. A custom grind I had made for my old NMCA 4500 lb. car was a 276/284 on a 113. NMCA had a minimum vacuum rule in those days and this cam just made the grade. It propelled that heavy boat to 108 MPH trap speeds with a 421 back in the 1980's. Rules required stock heads, intake and exhaust manifolds. Enough for a class record. I have had good luck with Crower cam saver lifters. The extra oil on the lifter foot certainly doesn't hurt. Good luck with your engine.
If you have some old Pontiac cams, he may be able to re-grind one to meet your needs. Finding a new core is difficult and it looks like there may not be a new run of them by CMC for 2 or 3 years if ever.

[SD455DJ]

Originally Posted by mgarblik

You can talk to Tim Goolsby at Ultradyne/Bullet about exactly what your needs are. He is tough to get in contact with though. Just keep trying. Morning is best. Your biggest challenge is going to be finding a cam core to grind. I just a week ago ordered one of my favorite mild cams from them. 276/286 on a 112. That's a nice cam and makes good vacuum for power brakes and good torque for a heavy car. A custom grind I had made for my old NMCA 4500 lb. car was a 276/284 on a 113. NMCA had a minimum vacuum rule in those days and this cam just made the grade. It propelled that heavy boat to 108 MPH trap speeds with a 421 back in the 1980's. Rules required stock heads, intake and exhaust manifolds. Enough for a class record. I have had good luck with Crower cam saver lifters. The extra oil on the lifter foot certainly doesn't hurt. Good luck with your engine.
If you have some old Pontiac cams, he may be able to re-grind one to meet your needs. Finding a new core is difficult and it looks like there may not be a new run of them by CMC for 2 or 3 years if ever.

Mike, what are the other specs on that cam?

Dennis

[mgarblik]

Originally Posted by SD455DJ

Mike, what are the other specs on that cam?

Dennis

To answer your Question: The exact cam I really loved is a custom grind. Here are the specs. Advertised is @.0045"

Adv. Intake 276 .050, 221 , .200, 132 lobe lift .3027

Adv. Exhaust 284 .050, 232, .200, 143 lobe lift .3273

ground on a 112-113

The exhaust lobe is a little aggressive but it made 7 more HP than an alternative slightly gentler exhaust lobe I will list below. We had to run the stock "093" heads which have small valves and poor stem angle. The exhaust flow is especially poor with the required exhaust manifolds. That cam really helped.

The alternative exhaust lobe, which is more gentle and popular, would probably work fine with the later heads. It is:

Adv. 286 .050 230, .200, 139 lobe lift .3027

These cams were easy on the valvetrain. I ran a 276/286 in a 421 HO 9 passenger Catalina wagon over 100,000 miles. Pulled a 19' Sea Ray probably 10,000-15,000 miles over many years to lakes all over OH, KY, TN. That wagon weighed 5050 Lbs. It ran 14.60's all the time with that cam. Turbo 400 and 3.42 rear.