Stock eliminator questions

[littlemanjoe]

Before we decide which road we want to go down, with our Challenger I have a couple questions.

It is currently a 440 six pack car running in B or C stock.

We are thinking about building a HEMI.

Can you run aluminum heads on a HEMI in Stock Eliminator? If so which ones? I don't see where NHRA says you can.

Can you run a aftermarket crankshaft in a HEMI? If so which one. Again I don't see where NHRA has one listed.

Any help on this is greatly appreciated!

[Billy Nees]

Originally Posted by littlemanjoe

Before we decide which road we want to go down, with our Challenger I have a couple questions.

It is currently a 440 six pack car running in B or C stock.

We are thinking about building a HEMI.

Can you run aluminum heads on a HEMI in Stock Eliminator? If so which ones? I don't see where NHRA says you can.

Can you run a aftermarket crankshaft in a HEMI? If so which one. Again I don't see where NHRA has one listed.

Any help on this is greatly appreciated!

www.classracerinfo.com

[Steve Stasko]

2531110-M2 is the only accepted 426 Hemi aluminum replacement head. That is a Chrysler #, the newer Edelbrock forgings are better than the older ones. They have been out for about 7-8 years now. It's a pretty good head out of the box flow wise. You'll lose a few HP over the iron heads, but it gets some free weight off the nose of the car.

Interestingly enough, Dwight's site is showing that in Stock, the 426 Aluminum head combo is rated lower (434 vs. 449) than the steel head combo. I know in S/S, the aluminum head carried a penalty when they initially approved them. I didn't realize that they had been accepted for Stock also.

As far as the crank, any "steel" crank is allowed, factory or aftermarket 4340. No billet, Top Fuel, or other misc stuff like that of course.

My personal opinion, since the car is already set up for it, is to leave the 440-6. You have to carry a few hundred extra lbs. in B with the Hemi, a little less with the Aluminum head...for now.

[Larry Hill]

Get the car sorted out with the six pack then go hemi racing. The six pack will go in the nine's at over 130 with a little work

[littlemanjoe]

Originally Posted by Larry Hill

Get the car sorted out with the six pack then go hemi racing. The six pack will go in the nine's at over 130 with a little work

Larry I hope some day my car will run like yours. I have always loved to watch your car run!

[Bob Mulry]

Originally Posted by Steve Stasko

Stock also.

As far as the crank, any "steel" crank is allowed, factory or aftermarket 4340. No billet, Top Fuel, or other misc stuff like that of course.

Not so fast Big Boy:

That is unless you are using the secret MOPAR/NHRA rulebook that makes non-production parts legal...

As per the NHRA rulebook ONLY OEM or Accepted Aftermarket crankshafts are legal..

Aftermarket crank must retain OEM configuration (i.e., knife edging, etc. prohibited).
Billet crankshafts prohibited, unless OEM equipped.
Lightening of crankshaft other than normal balance job prohibited

I also suggest that you get and read the NHRA rulebook and then you can make an informed decision on building a LEGAL NHRA Stock Eliminator engine or not

[littlemanjoe]

Originally Posted by Bob Mulry

Not so fast Big Boy:

That is unless you are using the secret MOPAR/NHRA rulebook that makes non-production parts legal...

As per the NHRA rulebook ONLY OEM or Accepted Aftermarket crankshafts are legal..

Aftermarket crank must retain OEM configuration (i.e., knife edging, etc. prohibited).
Billet crankshafts prohibited, unless OEM equipped.
Lightening of crankshaft other than normal balance job prohibited

I also suggest that you get and read the NHRA rulebook and then you can make an informed decision on building a LEGAL NHRA Stock Eliminator engine or not

Bob, Where do I get this rule book?
I would like to have a copy of the special Mopar one.....lol
It's tuff when you see everything Chevy's can run compared to Mopars

[Billy Nees]

Originally Posted by littlemanjoe

Bob, Where do I get this rule book?
I would like to have a copy of the special Mopar one.....lol
It's tuff when you see everything Chevy's can run compared to Mopars

Now, that's a joke right?

[littlemanjoe]

Originally Posted by Billy Nees

Now, that's a joke right?

Billy, What's a joke?

[Bob Mulry]

Originally Posted by littlemanjoe

Bob, Where do I get this rule book?
I would like to have a copy of the special Mopar one.....lol
It's tuff when you see everything Chevy's can run compared to Mopars

I believe that it's done by locking yourself in a closet, any closet, and writing them yourself. That's how MOPAR and Shelby did it in the past....

PS:
If you join the NHRA, you will get your own copy of the NHRA rulebook and pay special attention to Section 10...