I'm sort of foggy on the exact pounds (#'s)
started about 1973-ish Comp Eliminator Classes like 200 of them
A/G lighter weight per cid, like 6#s per/cid, non supercharged Gas class
A/Gas
B/Gas
B/G a lil' heavier weight per/cid something like 6.6#s per/cid,
with a 426 it'd be 2810# car, very few Hemi cars back then were less than 3000#s
(even the acid dipped bodied cars, weren't really light)
C/Gas
C/G was a lil' heavier per/cid, like 7.5#s per/cid
etc. etc. etc.
1977
AA/Gas is/was a Blown Gas, any tire any gear 'open car'
limited cid/limited blower size 6.71:1 & overdrive to 40%, on Gas
limited to pump size too, biggest pump was 180a pump, most people on Gas ran an 80a
(
fuel pump driven off the cam or a belt, that 180a pump Enderle or Hilborn mech. FI pump
can support 500cid on alcohol, back in the day)
if it was Fuel Injected & still the same weight per/cid,
A/A - a altered or slowed down NHRA S/E 7.90 ET bracket
if it was carbureted it had a 0.01# per/cid weight break
NHRA
Comp Eliminator classes circa 1978 (?)
Late 60s & early 70's it was called
Modified Production
MP/-- prior, the rules were far different prior to 1973-ish (75 ?)
before then the A/- alcohol or AA/- designation blown, was fuel or blown Gas
the letter behind that was weight designation,
AA/A was like a fuel dragster
B/- was injected alcohol
BB/- was injected fuel, or blown alcohol
after the / the letter designated weight or fuel type, gas, methanol/alcohol or nitro
all of them type designations went away, when it became
Comp Eliminator
like 1973-74-ish IIRC, I wasn't class 'NHRA' racing yet, just wed. & fri. nights stuff
not until 1977, just before I turned 18 in July
my 23 T 6.71:1 Blown/gas 301cid (alum. SBC based Donovan) altered (former BB F/C chassis)
was AA/Gas (AA/G) 6.01#s per/cid
it was min. of 1806#s with the ballast added, with a 301cid engine, ready to race
you ran on a national index fasted car of the weight class/style of car, flat out w/no breakouts
couldn't go too fast you'd change the index & get torn down, on the edge performance stuff
Camaro in the back ground was S/G 9.90 class (super-gas) in 1977
Below
later S/C 8.90 (Super Comp) then T/S (Top Sportsman) or S/E 7.90 class (Super Eliminator) 1980-ish
the pass below was at Sacramento raceway, 1st pass in the 8.98 range, all Iron 468 LS7 Mark IV BBC
circa 1982-ish my 49 Ford was B/G 499cid at 3294#s w/driver then,
I'm 6'-1"-2" 250-ish (shrinking) have been for decades,
a lil' lighter back then more like 235#s, 259#s with fire-suit, helmet
head sock & Nomex under where, w/fireproof boots SFI 20-3 layer suit
(B/Gas or I ran it also in 'Pro-Gas 8.50' too) prior they didn't care about driver weight
FI on Gas, latter alcohol, then blown methanol inj. 526cid Milodon Hemi
A/A 6.90 @ about 190 or slow it sown for 7.90 S/E
