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

[DeuceCoupe]

Originally Posted by Dwight Southerland

For your inquiry, here is what I found:


302-290 Z28 315 rating
427-425hp L72 435 rating
427-420hp L88/ZL1 480 rating
302-290hp Boss 330 rating
340-275hp MoPar 310 rating
426-425hp Street Hemi 480 rating
455-370hp Olds W30 380 rating
350-255hp 1969 Chevrolet 265 rating
400-370 1969 Pontiac RAIV 380 rating


Your '62 Pontiac 421-405hp combination was listed with and without the lightweight components, which we do not have in the current Class Guide. In 1969, C/S was an 8.50 break; in 1970, C/S was an 8.00 break. The lightweight component car would have made C/S easily @ 8.57 factor.


Odd items:
1) I cannot find a listing for the '68 Dart SS Hemi car.
2) The ZL1 '69 Corvette is in the guide
3) The LS7 '70 Corvette is in the guide

Thanks Dwight this is filling in a lot of details.
Those factored HP make a lot of those cars fit the class they ran in.
I did read that the 340/275 was factored to 310hp in Nov.67.
Also read that the 426/425 Hemi was factored at 465hp circa 1966-68 somewhere, so must have moved up to a 480hp factor later.


Agreed on those "allowed" combos that never existed - the Hydromatic sedan deliveries, and all those automatic HiPo Fords. All the 352HiPo, 390HiPo, 406, and 427solid Fords I know of were stick shift only except for a few dozen 64 Thunderbolts. But all those engines were allowed with automatics behind them. Oh well.


On the Pontiac Saga - I think I am on track to solve part of it.
The mystery comes from this story on the 1963 Swiss Cheese Packer / Masales car- says here it set the C/S record IN 1963 at 12.27 at 114.6mph.


http://www.supercars.net/blog/1963-p...-swiss-cheese/


However, I found this link detailing the class records as of June 1968:


http://www.forabodiesonly.com/mopar/...ecords.298236/


Note the C/S=9.00 record is listed as a 1962 421 Super Duty, exactly the same et/mph, 12.27 at 114.6.
So it looks like indeed that record was still standing but was set by a 1962 Cat, not a 1963 Swiss Cheese Cat.


That 1962 Cat (maybe it was in fact Masales, I cant find that info) would likely have weighed at least 3650 even with aluminum, putting it into SS/S in 1962 but C/S=9.00 in 1968 (or today, since todays upper brackets are the 1968 brackets.


The numbers jive with this story - the 1962 Cat held the 9.00 record as late as 1968 when C/S=9.00. I suspect the supercars.net link is mixing up a 1963 Swiss Cat with a 1962 Aluminum Cat, perhaps both Masales cars.


I don't think the Swiss Cheese Cats were ever allowed in STOCK, not 1963, not 1968, not ever, as only a few were built, 14 IIRC. Stuck in A/FX or B/FX at least in NHRA. There were over 150 Aluminum Cats so those were allowed in Stock.


Some good info in this link too, Milt Schornack's Bobcat book, notes Masales driving in 1962, and the ballasting (150+Lb spare tire) used in the 1963 Swiss Cheese Cats. At 3300lb, the unballasted Swiss Cats could run A/FX, but I think they were typically ballasted up (in the rear I bet) to B/FX=9.00 lb/CID weight. The real Swiss Cheese times I have found range from 11.69-12.59 at 117-123mph, so that 114.6mph always seemed a bit slow to me for a Swiss car.
.
https://books.google.com/books?id=P8...les%22&f=false


I am trying to figure this out one snipet at a time so of course comments welcome if anybody remembers details.
It brings back my memories of hearing on the car radio:
"Sundaaaaaaaaaaaay, at Detroit Dragwaaaaaaaaaay"
At least I got to run there a couple times. Long gone today.