I'm not much of a NASCAR fan but I get to wondering about some things and I need answers and I hope you can help.
1. Do the engine builders use the same cam for short and long tracks making gear changes only?
2. If not what makes a short track and long track(super speedway) cam.
3. Restricter plates, what cam changes are made here? Do you know what head and intake mods may be done?
I've got some top secret ideas about heads that I'm willing to sell but I would like to hear someone else's ideas. :D

Marty,

I told you I'm a West Silas Brown boy, didn't I?
My old house is that 2-story one, cyclone fence, 125 year old Oak tree about 7 feet across.

To answer your questions,
1.---Absolutely not! There is only a 6° to 8° difference at .050, and LSA changes, as well as everything else. They even run different cams for qualifying and for racing.
2.---I've always had good success with 268°/276° at .050 on 108° LSA and unlimited carb on the SuperSpeedway--This is what I used in Buddy Baker's 1980 Daytona 500 winner. It is still the fastest Daytona 500 EVER RAN! And when the .875" tappet rule came out, I had a racer(forgot who...) win Martinsville in Va with my SB300/308F6, a .842" tappet cam, 267/276 at .050, .573/.590 lift cam on 106 LSA. What do you want to bet that cam was in at 100° ATDC? Martinsville is famous for being a very short and tight 1/2 mile track.
Most short track cams are around 264/272, or so, and 106 or 107 LSA.
3.---Most restrictor plate cams right now are around 254/260 at .050, 1.8 or higher rockers, 110 to 112 LSA. The plates limit BHP to about 430 or so, depending on how much the engine builder is lying. The object is to get as much torque as you can, as high as you can.
That's about my knowledge of NASCAR cams. I haven't fooled with them for over 5 years. I may start back again........

UDHarold

They certainly change cams from track to track I'd imagine. Some short tracks RPM may vary 3000-4000 (Martinsville). Other short tracks not near as much (Bristol). When you get to peak RPM in an oval track car at the end of the straight, the battle was one off the turn which is power down low and under the curve.

In addition to cam changes, they change heads, intake manifolds, and headers trying to move the torque peaks to the rpm that will help the most.

Thanks for the info