Nhra no bigger than stock cam journals

[MR DERBY CITY]

Originally Posted by astikhossw

http://www.nhraracer.com/content/gen...416&zoneid=132 So does this mean next year they will be checking for these big 55 and 60 mm cam journals.

This didn't last long, it has been removed from the site.......

[PJ305]

Originally Posted by MR DERBY CITY

This didn't last long, it has been removed from the site.......

Yeah Mr Derby City, NHRA must have figured 95% of their stocker fields would not be in compliance!...lol

[John Duzac]

In 2010 Pat Cvengros wrote: The cam shaft may be of the larger journal design. Must use babbitt type cam bearings. Non-roller design.

Based on the above letter, you would think it would be permissible to run a big base circle cam. When considering all the changes to stock NHRA has made today with stocker heads, why would NHRA enforce a stock base circle cam. Pat Cvengros caused plenty of people to utilize the larger base circle cam which I believe would be very costly. A clarification needs to be made so racers know which way to go. The other question is how much could the big base circle cam help. It may not help at all!

[Jason]

Originally Posted by John Duzac

.The other question is how much could the big base circle cam help. It may not help at all!

But it sure would be an expensive way to find out.

[Alan Roehrich]

Originally Posted by MR DERBY CITY

This didn't last long, it has been removed from the site.......

Well, it was pretty stupid to rescind approval, long after the fact, of a relatively expensive modification to a pretty expensive part.

Further, given the other absurd rules for Stock valvetrain, allowing those cam cores helped re-level the playing field that was thrown way out by the other rules.

I'm not necessarily in favor of ANY of those rules, but if you're going to allow some to gain an advantage by opening some rules, you create an artificial advantage. And that's the problem with continually loosening the rules.

[Bobby Lundholm]

delete

[west coast]

The reminder on NHRA for this rule also included larger diameter lifters, which i believe there are more of those then large journal camshafts. Either way there are a lot of blocks out there that would be not usable in stock anymore.

[junior barns]

Originally Posted by west coast

The reminder on NHRA for this rule also included larger diameter lifters, which i believe there are more of those then large journal camshafts. Either way there are a lot of blocks out there that would be not usable in stock anymore.

yes I don't think the NHRA letter mentioned anything about lifters that would make a person think that larger is legal!

[amxron]

Cvengros told me 1957 Fords couldn't run stock because Ford didn't send the
specs to NHRA! Guess he never heard of Parham/Payne or Larry Walker.
I wonder where they find these guys?

Ron.

[Chuck Norton]

Originally Posted by amxron

Cvengros told me 1957 Fords couldn't run stock because Ford didn't send the
specs to NHRA! Guess he never heard of Parham/Payne or Larry Walker.
I wonder where they find these guys?

Ron.

My memory cells are shrinking faster than either the polar ice cap or my hairline at this stage of life but I seem to recall that the specs for all model years prior to 1960 were scrubbed during the Great Purge of 1971. When the prohibition against vintage cars in competition began to ease a few years ago, some but not all manufacturers resubmitted specs for a few models and we now have some examples in Stock Eliminator such as the Tri-Five bowties. Sadly, some of the really strong players from "olden times" such as Hudson, Pontiac, and Oldsmobile no longer existed by that time so they never had a chance to be revived. Either no one asked Ford for help with the blown 312 or Ford simply decided not to play in the revival era because their specs never reappeared.

There have been a few posts in other threads decrying the perfidy of NHRA with regard to aftermarket cylinder head castings and camshaft bearing journals. It's not hard to understand why people would want a stable set of guidelines and a clearly defined planning structure in the organization's decision making but I would submit that this is nothing to become all that agitated about. Until the morning comes when the word goes out that your class, your car/engine combination, or your entire eliminator has been wiped from the books ala Modified, Pro Stock Truck or Stock Eliminator in 1971, you really haven't experienced the worst that NHRA can do.

Suck it up and move on!

c