GT question

Ed Carpenter · 12-29-2010, 01:22 AM

Someone on here quite awhile back had a real neat excel program with all the GT classes on them. It had everything broke down stick,auto, min wt everything. Does anyone have that? When my computer crashed I lost it. Thanks. Ed

Alan Roehrich · 12-29-2010, 03:20 AM

I think that was Bill Harris.

Ed Carpenter · 12-29-2010, 05:20 AM

Thanks Alan I found his link, but it won't open anymore. Ed

Bill Harris · 12-29-2010, 04:52 PM

updated version with latest indexes and a fix for minimum weight in lowest suitable class (can't run at class min weight like in regular SS, thanks Adger).

http://www.employees.org/~bhracing/g...ulator_1p4.xls

No warranties implied or stated... ya get whut ya paid fer...

Jeff Lee · 12-29-2010, 11:03 PM

What I find interesting is that my car in GT has a .015 spread going down the ladder in the allowable classes while in traditional SS there is only a .05 spread between allowable classes.
I'm not sure if that has any usable consequences for me, but it's worth noting for another day.

This is a GREAT spreadsheet! Whoever made it should make one for Stock and Super Stock as these questions are always asked here. AND, make each a permanent sticky or whatever you admin's call it!

Ed Carpenter · 12-29-2010, 11:48 PM

Quote:

Originally Posted by Bill Harris

updated version with latest indexes and a fix for minimum weight in lowest suitable class (can't run at class min weight like in regular SS, thanks Adger).

http://www.employees.org/~bhracing/g...ulator_1p4.xls

No warranties implied or stated... ya get whut ya paid fer...

Thanks Bill!

Ed Carpenter · 12-30-2010, 01:14 AM

Quote:

Originally Posted by Bill Harris

updated version with latest indexes and a fix for minimum weight in lowest suitable class (can't run at class min weight like in regular SS, thanks Adger).

http://www.employees.org/~bhracing/g...ulator_1p4.xls

No warranties implied or stated... ya get whut ya paid fer...

Thanks figured it out using the program

66 Chevy II 2DR Sport Coupe shipping wt 2878

327/250/270(65 Nova)

GT/F min wt 3005

GT/G min wt 3140

GT/H min wt 3275

Larry Hill · 01-01-2011, 12:36 PM

Thank you Bill

Tom Meyer · 01-01-2011, 03:51 PM

Ed for the GT classes is,t there something about the lowest shiping weight. Or do they figure it different. My weight is 2829 or 2868 if it is in SS trim. The reg GT guys could maybe tell us. Tom

Jeff Lee · 01-01-2011, 05:55 PM

Use the shipping weight as published by NHRA in the classification guide (not the engine guide). You will use the shipping weight of the lightest V-8 available. Note: the classification guide has shipping weights listed on the far right of the scree. Use your scroll bar & push it to the right.

Note there are different weights for different models. For example. The base Maverick V-8 is different than the Maverick GT. I was looking at a '64 289 / 225 / 215 engine in a base '70 Maverick last night ('71 was first year V-8 Maverick). You could also install a '85 302 engine in it (or a 351 or anything else for that matter). The SS/GT class makes for interesting combos now that NHRA has opened the class to all vehicle platforms listed in the Class Guide. Previously it was only 1980 and newer platforms.

This applies to all SS/GT RWD platforms which are listed in the Class guide. If your platform is not listed in the Class Guide, no-can-do.
And we are talking traditional SS engines, not the modified SS engines which you see with non OEM hood scoops.

FWD conversions to RWD is another issue.

12-29-2010, 01:22 AM	#1
Ed Carpenter Live Reporter Join Date: May 2006 Location: Dripping Springs, Tx Posts: 2,709 Likes: 186 Liked 520 Times in 132 Posts	GT question Someone on here quite awhile back had a real neat excel program with all the GT classes on them. It had everything broke down stick,auto, min wt everything. Does anyone have that? When my computer crashed I lost it. Thanks. Ed __________________ Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development

12-29-2010, 03:20 AM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,066 Likes: 1,486 Liked 1,630 Times in 378 Posts	Re: GT question I think that was Bill Harris. __________________ Alan Roehrich 212A G/S

12-29-2010, 05:20 AM	#3
Ed Carpenter Live Reporter Join Date: May 2006 Location: Dripping Springs, Tx Posts: 2,709 Likes: 186 Liked 520 Times in 132 Posts	Re: GT question Thanks Alan I found his link, but it won't open anymore. Ed __________________ Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development

12-29-2010, 04:52 PM	#4
Bill Harris Member Join Date: Mar 2002 Location: Ooltewah, TN Posts: 421 Likes: 13 Liked 26 Times in 13 Posts	Re: GT question updated version with latest indexes and a fix for minimum weight in lowest suitable class (can't run at class min weight like in regular SS, thanks Adger). http://www.employees.org/~bhracing/g...ulator_1p4.xls No warranties implied or stated... ya get whut ya paid fer... __________________ Bill Harris ex 2172 STK ex 2272 S/S

12-29-2010, 11:03 PM	#5
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Hey Admin! What I find interesting is that my car in GT has a .015 spread going down the ladder in the allowable classes while in traditional SS there is only a .05 spread between allowable classes. I'm not sure if that has any usable consequences for me, but it's worth noting for another day. This is a GREAT spreadsheet! Whoever made it should make one for Stock and Super Stock as these questions are always asked here. AND, make each a permanent sticky or whatever you admin's call it! __________________ Jeff Lee 7494 D/S '70 AMX

01-01-2011, 12:36 PM	#8
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,583 Likes: 1,866 Liked 10,582 Times in 2,186 Posts	Re: GT question Thank you Bill __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

01-01-2011, 03:51 PM	#9
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 928 Likes: 73 Liked 350 Times in 119 Posts	Re: GT question Ed for the GT classes is,t there something about the lowest shiping weight. Or do they figure it different. My weight is 2829 or 2868 if it is in SS trim. The reg GT guys could maybe tell us. Tom __________________ Tom Meyer 5240 SS Stock ??? Last edited by Tom Meyer; 01-01-2011 at 06:16 PM. Reason: spelling

01-01-2011, 05:55 PM	#10
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: GT question Use the shipping weight as published by NHRA in the classification guide (not the engine guide). You will use the shipping weight of the lightest V-8 available. Note: the classification guide has shipping weights listed on the far right of the scree. Use your scroll bar & push it to the right. Note there are different weights for different models. For example. The base Maverick V-8 is different than the Maverick GT. I was looking at a '64 289 / 225 / 215 engine in a base '70 Maverick last night ('71 was first year V-8 Maverick). You could also install a '85 302 engine in it (or a 351 or anything else for that matter). The SS/GT class makes for interesting combos now that NHRA has opened the class to all vehicle platforms listed in the Class Guide. Previously it was only 1980 and newer platforms. This applies to all SS/GT RWD platforms which are listed in the Class guide. If your platform is not listed in the Class Guide, no-can-do. And we are talking traditional SS engines, not the modified SS engines which you see with non OEM hood scoops. FWD conversions to RWD is another issue. __________________ Jeff Lee 7494 D/S '70 AMX