Camshaft

[Alan Warman]

So are roller cam bearings legal.

[Alan Roehrich]

Originally Posted by Alan Warman

So are roller cam bearings legal.

I doubt they look. They certainly are not worth what they cost to install and run.

A lot is made of the "big cams", a whole lot more than they are really worth, and there a lot of really fast cars that do not have one.

Yes, there probably is a little there, IF you have your valvetrain and your combination fully developed. But if you think it's even a tenth, you'll be terribly disappointed.

[Alan Warman]

This is way I ask these questions it sure saves a lot of money. I would like to know more about the the ring package though.

[RockyJ]

I will tell you about the ring pack because i dont really care anymore.
The less you spend on the rings the faster you will go.
The key is the clearances and the surface prep, how about that.

[RJ]

Originally Posted by RockyJ

The less you spend on the rings the faster you will go.

Wow, I can't think of but 2 instances that apply here -

1. You don't build any engines that compete in a competitive racing series.

or

2. You know someone who does, and they are lying to you.

[Dwight Southerland]

Originally Posted by Woodro Josey

Save your Money! Spend it on Piston, Ring Combination!

For a stocker or super stocer, yes. There are lots of places to spend money that has better returns.

[Chad Rhodes]

I personally say no. The 55mm (big block) cam is more expensive by a multiple of at least two, not to mention the machine work to able to run it. Then there is the question of strength in a production block (small bore bowtie blocks are hard to come by). The line has to be drawn somewhere, all other journals in the motor must be stock size, they should go ahead and mandate that the cam must be too. At least in stock.

[RJ]

Originally Posted by Chad Rhodes

I personally say no. The 55mm (big block) cam is more expensive by a multiple of at least two, not to mention the machine work to able to run it. Then there is the question of strength in a production block (small bore bowtie blocks are hard to come by). The line has to be drawn somewhere, all other journals in the motor must be stock size, they should go ahead and mandate that the cam must be too. At least in stock.

There's no spec for it, or the firing order, so do what you want.

[Jim Hanig]

Well should the 50 mm be legal,or not, heard why they may help and what they cost is, but the real hitter,s arent going to worry about a 600 to 800 dollar cost stop them.A simple yes or no.??? Jim Hanig

[james schaechter]

Jim, I think you want a poll, not an answer. If you want a poll, I think you can set one up on this forum to gather opinions.

If you want an answer, contact NHRA. I would suggest proper channels like your Div Tech person.

If Travis even started answering all of the questions in this snake pit NHRA would have a cow and Travis wouldn't get any sleep either.

It might take a considerable amount of time to get an answer from NHRA, but they are the ones that will give you one.

If you still have your superstocker, I think you can bore that out with no worries with rules.

P.S. I almost hate to say it, but as far as opinions go, I think Ed had the best one on this thread.