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oldskool · 05-27-2016, 09:33 PM

I'm no expert. But I got plenty of time. So, I'll take a stab at the GT class.

To me, the simple explanation is that you can run an engine that wasn't an option in the body you're running.

Take GM for example: I think you can run most any GM engine, from any year(must be listed in the NHRA classification guide), in most any GM car body.

Take Pontiacs for example: The Burtons run a 400 in their 3rd gen GT Bird, even though no 400 Pontiac engines were offered in a 3rd gen--'79 was the last year of the 400.

The NHRA Super Stock legal alum head(Edelbrock #60587) version of the Pontiac 428, is a very popular GT engine. I think this engine is used in Leo Glasbrenner's 4th gen, as well as Don Kennedy's GT/AA Sunbird. It has an NHRA hp factor of 330.

http://www.edelbrock.com/media/news/.../070908-2.html

I'm told that Robert Cruzen even has one in his GT/AA Cobalt, which was #1 qualifier at the recent national event in Topeka.

http://www.dragracecentral.com/DRCSt...r2016#indextop

You could also use an early body, such as a '68 Bird, and run a '69 or later Pontiac engine. The '77 model 350's and several of the low compression 400's have done good in SS. Bill Rink's '74 350 GTO runs good. So, basically you'd wanna pick an engine with a competitive NHRA hp factor.

The engine will have to go by the rules for that particular engine combo in a natural SS class. But, obviously, the weight will be determined based closer to the original weight of the body used. The GT weight breaks start with A @ 8.00 lbs per hp, and go thru M @ 14 lbs per hp.

http://classracer.com/classes.html

A Pontiac body could run a Chevy, Olds, Buick, Pontiac--most any GM engine(that's listed in the classification guide).

http://www.nhra.com/competition/classification.aspx

This is obviously a very basic, and even crude explanation. But, that's how I think it works.

Here's a site that has a lot of good info. I've found a few things that were not updated. But, it's got most of the info needed to figure out most any combination.

http://classracerinfo.com/

05-27-2016, 09:33 PM	#2
oldskool VIP Member Join Date: Dec 2014 Location: The Land of Bayous, Boudin & Crawfish Posts: 1,668 Likes: 223 Liked 747 Times in 362 Posts	Re: SS Classes I'm no expert. But I got plenty of time. So, I'll take a stab at the GT class. To me, the simple explanation is that you can run an engine that wasn't an option in the body you're running. Take GM for example: I think you can run most any GM engine, from any year(must be listed in the NHRA classification guide), in most any GM car body. Take Pontiacs for example: The Burtons run a 400 in their 3rd gen GT Bird, even though no 400 Pontiac engines were offered in a 3rd gen--'79 was the last year of the 400. The NHRA Super Stock legal alum head(Edelbrock #60587) version of the Pontiac 428, is a very popular GT engine. I think this engine is used in Leo Glasbrenner's 4th gen, as well as Don Kennedy's GT/AA Sunbird. It has an NHRA hp factor of 330. http://www.edelbrock.com/media/news/.../070908-2.html I'm told that Robert Cruzen even has one in his GT/AA Cobalt, which was #1 qualifier at the recent national event in Topeka. http://www.dragracecentral.com/DRCSt...r2016#indextop You could also use an early body, such as a '68 Bird, and run a '69 or later Pontiac engine. The '77 model 350's and several of the low compression 400's have done good in SS. Bill Rink's '74 350 GTO runs good. So, basically you'd wanna pick an engine with a competitive NHRA hp factor. The engine will have to go by the rules for that particular engine combo in a natural SS class. But, obviously, the weight will be determined based closer to the original weight of the body used. The GT weight breaks start with A @ 8.00 lbs per hp, and go thru M @ 14 lbs per hp. http://classracer.com/classes.html A Pontiac body could run a Chevy, Olds, Buick, Pontiac--most any GM engine(that's listed in the classification guide). http://www.nhra.com/competition/classification.aspx This is obviously a very basic, and even crude explanation. But, that's how I think it works. Here's a site that has a lot of good info. I've found a few things that were not updated. But, it's got most of the info needed to figure out most any combination. http://classracerinfo.com/ Last edited by oldskool; 05-28-2016 at 12:09 AM.