Virginia Motor Sport Club Discussion Forums

General Category => Ask the Competition Committee => Topic started by: ruckus81 on October 17, 2015, 08:10:17 AM



Title: tire shopping need help class car and tire permitted
Post by: ruckus81 on October 17, 2015, 08:10:17 AM
1981 Corvette
Stock body
6pt cage
Aftermarket  , heads , intake, cam,carb
Upper A arms
All moog front joints and bushings
Koni shocks
373 gears
Factory gymkhana Suspension
4spd
Full interior
Currently on factory wheels and BFG T/A 255/60 15


Title: Re: tire shopping need help class car and tire permitted
Post by: wahoo5 on October 17, 2015, 09:55:27 AM
Gene knows the more modified classes better than I do, but I think SSM is the right class. There is a minimum required weight, but given that you have a full interior, etc., I don't think you would have a problem meeting it.

Here is the weight rule.

Minimum Weight Calculations (without driver): FWD: 1350 lbs. + 125 lbs. per liter
RWD: 1600 lbs. + 200 lbs. per liter
AWD: 1600 lbs. + 300 lbs. per liter
Supercharged or Turbocharged SSM engines: Add 1.4L to the actual displacement.
Rear wheel weight greater than 51%: +25 lbs. per liter
Tire width 275 mm or less (all): -200 lbs.
Regardless of the weight formulas above, no car will be required to weigh more than 2900 lbs.

Wheel and tire size in this class are unlimited. I think you have to run a DOT legal tire, which for most people means Hoosier A7s.

All of this is subject to check by Gene.

David


Title: Re: tire shopping need help class car and tire permitted
Post by: GeneCooley on October 17, 2015, 01:54:39 PM
SSM looks good, but the best thing to do is go through the SM rules and look for anything that might keep you out of the class. Remember that SM (and SSM) builds on less modified classes so follow through the classes listed as pertaining to SSM.
The SCCA site has the current rules.   http://scca.org

Gene Cooley


Title: Re: tire shopping need help class car and tire permitted
Post by: pipefitter on October 18, 2015, 07:17:20 AM
Without "R" compounds, is there a CAM based class for that car? I haven't looked, yet.


Title: Re: tire shopping need help class car and tire permitted
Post by: allmybase on October 18, 2015, 05:05:49 PM
http://scca.growsites.net/downloads/3712-2015-cam-handout-appendix-b-3-2/download

Looks like its fine in CAM.  I'm not sure the club does the supplemental classes, but it would fit under CAM-S.

Wheels and tires are unlimited so long as the tires are 200 tread wear or greater.  BFG Rival-S and Bridgestone RE-71R have proven to be the best 200 tw tires this year.  I've heard wider sizes are coming, but don't have any details.


Title: Re: tire shopping need help class car and tire permitted
Post by: ccann26 on October 19, 2015, 07:03:29 PM
That should be a CAM car just run it with the Rivals or Bridgestones and have an interior.