Need help for a newbie please

[Marco]

Also could somebody please explain what I'm looking at our car is a 92 camaro Z28 with a 3 speed automatic and a 305 how do I figure out what the natural class is by looking at this




CAMARO 1992

191 191 305 305 305 305 305 305 305 350 350
Man Only Auto Only Man Only Man Only Auto Only Auto Only
* ** * ** * * ** * ** * **
&
140hp 140hp 170hp 170hp 205hp 205hp 205hp 230hp 230hp 245hp 245hp
CAMARO 101.0
Coupe 2 Dr RS 5 Speed 3025 3025 3170 3170 3170 0 3170 0 0 0 0
W/4 Speed Auto 3080 3080 3269 3269 0 3269 3269 0 0 0 0
Convertible 2 Dr 5 Speed 3142 3142 3287 3287 3287 0 3287 0 0 0 0
W/4 Speed Auto 3197 3197 3389 3389 0 3389 3389 0 0 0 0
Coupe 2 Dr Z-28 5 Speed 0 0 0 0 0 0 0 3194 3194 0 0
W/4 Speed Auto 0 0 0 0 0 0 0 0 0 3321 3321
Convertible 2 Dr Z-28 5 Speed 0 0 0 0 0 0 0 3298 3298 0 0
W/4 Speed Auto 0 0 0 0 0 0 0 0 0 3425 3425

S/SS Factors 145 150 210 240 245 241 235 245 235 268 270
1.1.09 5.19.03 1.1.09 7.10.07 1.1.10 1.1.10
S/SS Factors w Replacement Heads 275
1.1.13
& = Dart # 10021070

[dartman]

Originally Posted by Marco

Also could somebody please explain what I'm looking at our car is a 92 camaro Z28 with a 3 speed automatic and a 305 how do I figure out what the natural class is by looking at this




CAMARO 1992

191 191 305 305 305 305 305 305 305 350 350
Man Only Auto Only Man Only Man Only Auto Only Auto Only
* ** * ** * * ** * ** * **
&
140hp 140hp 170hp 170hp 205hp 205hp 205hp 230hp 230hp 245hp 245hp
CAMARO 101.0
Coupe 2 Dr RS 5 Speed 3025 3025 3170 3170 3170 0 3170 0 0 0 0
W/4 Speed Auto 3080 3080 3269 3269 0 3269 3269 0 0 0 0
Convertible 2 Dr 5 Speed 3142 3142 3287 3287 3287 0 3287 0 0 0 0
W/4 Speed Auto 3197 3197 3389 3389 0 3389 3389 0 0 0 0
Coupe 2 Dr Z-28 5 Speed 0 0 0 0 0 0 0 3194 3194 0 0
W/4 Speed Auto 0 0 0 0 0 0 0 0 0 3321 3321
Convertible 2 Dr Z-28 5 Speed 0 0 0 0 0 0 0 3298 3298 0 0
W/4 Speed Auto 0 0 0 0 0 0 0 0 0 3425 3425

S/SS Factors 145 150 210 240 245 241 235 245 235 268 270
1.1.09 5.19.03 1.1.09 7.10.07 1.1.10 1.1.10
S/SS Factors w Replacement Heads 275
1.1.13
& = Dart # 10021070

On the left side of each Guide, you find the vehicle model descriptions, and across the top are the available engine, identified by cubic inch displacement and original, advertised horsepower rating. At the bottom of each column, you may find another number which represents the NHRA factored horsepower. This is the number used in determining classification (not the advertised), and some engines will have a different factored horsepower for Stock and Super Stock.

The numbers in the middle of the page are the power to weight factors for each model and engine combination, and identify which particular class a vehicle fits into. For instance, if the particular vehicle/engine combination you are looking at has a factor of 12.39 in Stock Eliminator, the vehicle fits in I/Stock, which according to the 2001 NHRA Rulebook, is for vehicles with a power to weight factor of between 12.00 and 12.49 pounds per horsepower.


as far as I see, to be a Z28 auto it would have to have a 350 245/268 which would make it a I/sa

shipping weight 3321 lbs div by factor hp268=12.39 = I/SA

weight of the car should be 12 x268 +170 for the driver= 3386 lbs

only the manual 5 speed Z28 came with a 305


the RS camaro came with 305 in a auto

shipping weight 3269 lbs div by factor hp 241=13.56=L/sa

weight the car should be 13.5 x241+170=3425 lbs

It may be running as a 89 iroc with 305 .with a factor of 13.46 K/SA .305/220/241 hp
hope this helps

[Marco]

Ok folks we went out and tested our new (to us) stocker last night at what I believe was J weight and was able to go as fast as 7.58 what does this number translate to in the 1/4 mile?

[HR9121]

Somewhere in the 11.80 range depending on a few variables but that's close.

[Marco]

Thank you, This may be a stupid question but would it be reasonable to expect the car to run farther under the 1/4 mile index than the 1/8 mile index?

[jmcarter]

Originally Posted by Marco

Ok folks we went out and tested our new (to us) stocker last night at what I believe was J weight and was able to go as fast as 7.58 what does this number translate to in the 1/4 mile?

1.56 X the 1/8 time is the "official" formula, which depending on the variables is a good rule of thumb, think NHRA uses 1.6