Thanks Glen for coming through with cams for us.
17 days until the Montana 500!
Tell us MORE ! What type of engine are these designed for? Guessing not for a Centredoor that's used only on 4th Of July parades...
Would 0.310 lift be legal ?
You can do anything to the camshaft as long as it fits in an unmodified block. So if you increase lift by grinding the heel, the camshaft is weaker.....
Lift over 0.280 usually needs the block to be modified to get it in. I wonder what Glen did?
I talked to Bill Stipe about his .290 cam. Was told that the 290 should fit with out modifications. Have not personally tried a 290 cam....only walked the walk with the 280.
I do know for a fact.....happened to me! that some early blocks require having some material removed from underneath in order for the tappet to clear due to higher lift.
We monkeyed around with the cams after we got them from Glen. I won't say exactly what we've done, as we are still competing. These cams are for two motors that we are doing for Montana 500 guys. One is for an old timer and one is for a rookie.
It seems like removing material from the heel of the lobe and increasing valve stem length would help with the issue of modifying the block?
Our 280 lift cam with a 0.810 base circle gives you the biggest lobes possible and just fits in a model t block without modifying it. This cam is designed to have both a good low end and a good high end for street use. Tom bought unground cam blanks and put a grind on for a better high end for the 500 race. From what we've seen the Stipe 290 cam is no better than the Stipe 280 cam so don't waste your money. The Stipe 280 is a good cam and is very close in performance to our 280 cam except for the low end. We are currently out of 280 cams but should have more soon.
Tom, I have 5 original racing cams for samples. Do not know who made them but they vary in lift from 0.280-0.300. I also have the valve timing characteristics. Could you send me the specs for your grind, or is that a secret?
Glen, I think i will keep the spec's under my hat for a while.
Tom, I thought that's what you would say. Don't blame you. Just wanted to put it on my computer dyno. But I think I know what you did. I have checked all of my original racing cams and they pretty much all did the same thing. But thanks for the plug. It sounded as if you were using my cams for the race. A little advertising doesn't hurt. Glen
We are using your cams, just not your grind.
Tom, Hope you are happy. Good luck against Garrett Green. He and some of his Orange County buddies bought cams also. Glen
Ed, There is no problem with a reground cam fitting in a Model T Motor as you are removing material. A new cam has to be designed so that the toe will go through the block cam holes without interference. 280 lift and a 0.810 base circle just fits. If you increase the lift you have to reduce the base circle.
Yes Glen, they are very nice cams. I had them heat treated with an iron nitride process. They came back very hard with almost no distortion.
Tom, We use Iron Nitride also. It is much better than the normal heat treat that warps the cams. God luck, hope you win. Glen