GT class configuration...

Chris DeGidio · 11-01-2008, 10:51 PM

How do you figure class for a certain engine/car combo?? Combo in question would be a 71 Plymouth Duster with a 1970 383/335Hp engine.

RPinoski1 · 11-02-2008, 11:58 AM

Just pick what ever GT class you want to run and multiply the hp to the class you choose. With the ability to adjust the shipping weight in GT the door is wide open to put a combo where it will be competitive.

trmnatr · 11-02-2008, 02:50 PM

Quote:

Originally Posted by RPinoski1

Just pick what ever GT class you want to run and multiply the hp to the class you choose. With the ability to adjust the shipping weight in GT the door is wide open to put a combo where it will be competitive.

To the original poster, I dont mean to jump in on the thread but i have the same question

With a heavy car, Which GT class would a 327/275 or 327/300 fall under with an automatic?

Adger Smith · 11-02-2008, 03:21 PM

Looks like the 327 275 has been gifted with HP. (NHRA.com) The 1966 275 is now at 299 HP with OE heads & 304 HP w replacement heads. The 327 300 HP is at 285 w OE heads & 290 W Replacement heads. Might make the 300 a better choice, depending on the differences in the engine combos. If you know the shipping weight of the heavy car you want to use you can use Bill's GT calculator to figure out what classes it will fit. You have to know 3 things to figure the class w/GT calculator. 1. Shipping weight of the car you want to use. You can get the factory shipping weight from the NHRA classification guide. http://www.nhra.com/tech_specs/classification/ 2. The factored HP of the engine. (get the same place) 3. Either Auto or Man. The program works. It even gives you choices of which classes you can move to by adding or subtracting weight & the HP required to run. Pretty nice tool.

Ed Carpenter · 11-19-2014, 11:17 PM

Quote:

Originally Posted by Adger Smith

Looks like the 327 275 has been gifted with HP. (NHRA.com) The 1966 275 is now at 299 HP with OE heads & 304 HP w replacement heads. The 327 300 HP is at 285 w OE heads & 290 W Replacement heads. Might make the 300 a better choice, depending on the differences in the engine combos. If you know the shipping weight of the heavy car you want to use you can use Bill's GT calculator to figure out what classes it will fit. You have to know 3 things to figure the class w/GT calculator. 1. Shipping weight of the car you want to use. You can get the factory shipping weight from the NHRA classification guide. http://www.nhra.com/tech_specs/classification/ 2. The factored HP of the engine. (get the same place) 3. Either Auto or Man. The program works. It even gives you choices of which classes you can move to by adding or subtracting weight & the HP required to run. Pretty nice tool.

Adger that 327/275/299 is the stick hp. Been at that hp for several years. I ran that combo 2006 to 2012.

Bill Harris · 11-02-2008, 12:01 PM

If you have Microsoft Excel you can use my class calcuator to find out which classes a particular setup can run. You need to know the shipping weight of the car, the factored HP of the engine, and the trans type.

You can download or run from:
http://www.employees.org/~bhracing/g...ulator_1p1.xls

Chris DeGidio · 11-02-2008, 02:59 PM

Thanks for the info guys.

The calculator works great,and easy to use.

Also thanks to the mod that moved this.

Paul Sarvas · 09-08-2013, 11:33 AM

Quote:

Originally Posted by Bill Harris

If you have Microsoft Excel you can use my class calcuator to find out which classes a particular setup can run. You need to know the shipping weight of the car, the factored HP of the engine, and the trans type.

You can download or run from:
http://www.employees.org/~bhracing/g...ulator_1p1.xls

Would it be possible to repost this as a working link please?

Thank you,

pS

Rod Greene · 11-19-2014, 09:01 PM

Can someone repost a working link to this calculator?

Adger Smith · 11-19-2014, 10:02 PM

Rod, You have a PM

11-01-2008, 10:51 PM	#1
Chris DeGidio Member Join Date: Jun 2007 Posts: 364 Likes: 8 Liked 2 Times in 2 Posts	GT class configuration... How do you figure class for a certain engine/car combo?? Combo in question would be a 71 Plymouth Duster with a 1970 383/335Hp engine. __________________ Nautilus Racing

11-02-2008, 11:58 AM	#2
RPinoski1 Member Join Date: Jan 2002 Location: PLACERVILLE, CA Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	Re: GT class configuration... Just pick what ever GT class you want to run and multiply the hp to the class you choose. With the ability to adjust the shipping weight in GT the door is wide open to put a combo where it will be competitive.

11-02-2008, 03:21 PM	#4
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: GT class configuration... Looks like the 327 275 has been gifted with HP. (NHRA.com) The 1966 275 is now at 299 HP with OE heads & 304 HP w replacement heads. The 327 300 HP is at 285 w OE heads & 290 W Replacement heads. Might make the 300 a better choice, depending on the differences in the engine combos. If you know the shipping weight of the heavy car you want to use you can use Bill's GT calculator to figure out what classes it will fit. You have to know 3 things to figure the class w/GT calculator. 1. Shipping weight of the car you want to use. You can get the factory shipping weight from the NHRA classification guide. http://www.nhra.com/tech_specs/classification/ 2. The factored HP of the engine. (get the same place) 3. Either Auto or Man. The program works. It even gives you choices of which classes you can move to by adding or subtracting weight & the HP required to run. Pretty nice tool. __________________ Adger Smith (Former SS) Last edited by Adger Smith; 11-02-2008 at 03:24 PM. Reason: sp

11-02-2008, 12:01 PM	#6
Bill Harris Member Join Date: Mar 2002 Location: Ooltewah, TN Posts: 421 Likes: 13 Liked 26 Times in 13 Posts	Re: GT class configuration... If you have Microsoft Excel you can use my class calcuator to find out which classes a particular setup can run. You need to know the shipping weight of the car, the factored HP of the engine, and the trans type. You can download or run from: http://www.employees.org/~bhracing/g...ulator_1p1.xls __________________ Bill Harris ex 2172 STK ex 2272 S/S

11-02-2008, 02:59 PM	#7
Chris DeGidio Member Join Date: Jun 2007 Posts: 364 Likes: 8 Liked 2 Times in 2 Posts	Re: GT class configuration... Thanks for the info guys. The calculator works great,and easy to use. Also thanks to the mod that moved this. __________________ Nautilus Racing

11-19-2014, 09:01 PM	#9
Rod Greene Senior Member Join Date: Mar 2002 Location: TN Posts: 530 Likes: 422 Liked 242 Times in 81 Posts	Re: GT class configuration... Can someone repost a working link to this calculator? __________________ Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects.

11-19-2014, 10:02 PM	#10
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: GT class configuration... Rod, You have a PM __________________ Adger Smith (Former SS) Last edited by Adger Smith; 11-19-2014 at 10:02 PM. Reason: sp