Lookin for NHRA Stock Class ET/MPH from 1970-71

[ss wannabee]

I wonder when NHRA "pulled" the 4-spds out of the '57 Pass Cars...what most of the
owners did...and how much slower was the car with either a 3-spd stick...or the PG?

[DeuceCoupe]

Originally Posted by ss wannabee

I wonder when NHRA "pulled" the 4-spds out of the '57 Pass Cars...what most of the
owners did...and how much slower was the car with either a 3-spd stick...or the PG?

From what I have learned from this thread, the HAMB Junior Stock thread, and Boyce's Junior Stock book, a lot of stuff was legal in 1969 but not in 1970:
* Chev Sedan Deliveries:
* Hydramatic ok in 1969
* Had to run iron PG in 1970
From the data I have, it looks like folks lost a couple tenths at first, but as the 4000-stall converters caught on the difference almost disappeared. The Gonkulator runs I am computing show about the same.


* Chev 57-58
* 4spd ok in 1969
* Had to run 3spd in 1970
* Again, maybe a couple tenths was lost though data is sketchy, I don't have any direct before & after.
* The Gonkulator calculates that most of the loss was in the shifter - the 3-on-the-tree was a LOT slower, but even on the floor, the 1-2 shift is fast on a 4spd but slow on a 3spd (unless you get clever with the shifter as some did).

[ss wannabee]

Originally Posted by ss wannabee

I wonder when NHRA "pulled" the 4-spds out of the '57 Pass Cars...what most of the
owners did...and how much slower was the car with either a 3-spd stick...or the PG?

I vaguely remember the rules change mentioned in the "Strickly for Stocks" column
in Hot Rod Magazine....also recall a Delivery racer with "NHRA hates Sedan
Deliveries" lettered on his car....

[Rich Biebel]

How many times has NHRA made stupid decisions that cost racers a lot of money and time or worse. The answer is a lot ! Just abitrarily make rules or do away with entire categories. Everytime they did this they lost racers. This goes all the way back to the 1960's. Look where they are now....

[DeuceCoupe]

Originally Posted by Rich Biebel

How many times has NHRA made stupid decisions that cost racers a lot of money and time or worse. The answer is a lot ! Just abitrarily make rules or do away with entire categories. Everytime they did this they lost racers. This goes all the way back to the 1960's. Look where they are now....

Speaking of allowed / not allowed:
Thanks to the books I have, HAMB, and this thread!!!, I now have a growing database of stock class (and a few SS and FX) cars from 1950-1971, with the following numbers of et/mph pairs:
186 chev (the most of course)
106 ford (even a few non-427 cars)
80 mopar (about 1/3 hemis)
9 buick (yes, that many!)
30 olds
5 "amc" (includes Hudson, stude)
Tedious but fun and revealing.


8 of these are the famous "stock" aka parts counter 383/343 combo of 1962. First run I have is from 1963, last from 1970. Was this combo ever disallowed, is it still called "stock class" today?


6 of the Fords are the 390/335 Comets of 1966. I thought I knew these cars pretty well but the story in this link surprised me- a lot of Ford gurus on that site and nobody disagreed:


http://www.network54.com/Forum/74182...47/View+Thread


It says the 66 comet 390/335gt was allowed to run the much better aluminum 428 police intake AND functional cold air hood, and at least today, a bigger 735/780 Holley to replace the stock 600 Holley. Of course, Ford had a huge race parts bin, they just didn't use these parts from the factory. So its kind of like the 383/343 story. Anybody know if this is true, WHEN it was first allowed (NHRA disqualified the ram air GTO's at 66 Pomona so why would they allow aluminum intake Comets?), and WHY it only applied to the 66 Comet, and not all the other FoMoCo 390gt engines of 1966-1968?