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

[DeuceCoupe]

Originally Posted by Dwight Southerland

Looking at the old class guide, the 1968-70 CobraJets were rated at 340 non-ram air, 360 ram air. The sheets have the NHRA oval logo at the bottom and the date 1970 beside the logo. The hp rating is not listed on the sheet, I had to calculate based on the shipping weight from current data.


The 1967-69 Camaros 396 375 were rated at 425. Interesting that they list a 1970 Camaro with an LS6 450hp.

Any others you need info about?

Dwight,


Thanks so much for that!
I suspected that about the 428cj, from an old article (Nov.69 SS&DI)about a 428cj Cyclone saying they could run either F/SA or G/SA just by changing to a flat hood (ie no ram air). The 360hp and 340hp factors are what I had guessed.


Others I suspect were factored in stock class back then:
302/290z28 (290, yeah, sure)
427/425L72 (if the L78 was factored, why not the L72?)
427/430L88/ZL1 (same logic)
302/290boss
340/275mopar
426/425hemi


455/370w30
The reason I suspect this last one is as follows:
NHRA weight is 3720, both today & back then.
HP is 370
Even I don't need a calculator to see 3720/370=10.0x (10.05)
But most of these cars are shown running in F=9.50 and then some talk of them moving themselves up to E=9.00 to avoid a certain z28 that dominated F/S. Wouldn't all these W30 cars belong in G/S unless either they were factored to say 390hp, or the weight was wrong (w30 did have a glass hood & alum intake so that's possible?)


Well if you can look up any of those I would much appreciate it as I have no other way to get the info!