1987 IROC Corner Weights - F-Body Road Racing and Autocross Forums

At last weekend's Divisional here in Atlanta I was able to weigh my car with the driver. I am trying to balance the car a bit more within the SP rules AND trying to find horsepower to match the 10 to 1 magic ratio. 10 lbs for every 1 horse.

Right now the weights are:
LF 1020
LR 801
RF 1006
RR 694

Giving me a 57.5%front, 42.5% rear.

Just a reminder, this is a 5.0L TPI / 5 speed car with T-Tops removed and a full 8 point roll cage.

I am moving the battery to the trunk this week, (that should help). Are there any other legal tricks I should examine to try and help my situation? I can't think of any.

Obviously, with only 260-270HP, i have to spend some time under the hood also, i'll be starting with Chip and Exhaust. I also bet that the driver losing 20 lbs would help this out quite a bit too. eh?

Any thoughts?

BrianChevy View Member Profile	Jun 24 2005, 11:32 AM Post #1
Member Group: Advanced Members Posts: 153 Joined: 3-January 04 From: Atlanta, GA Member No.: 90	At last weekend's Divisional here in Atlanta I was able to weigh my car with the driver. I am trying to balance the car a bit more within the SP rules AND trying to find horsepower to match the 10 to 1 magic ratio. 10 lbs for every 1 horse. Right now the weights are: LF 1020 LR 801 RF 1006 RR 694 Giving me a 57.5%front, 42.5% rear. Just a reminder, this is a 5.0L TPI / 5 speed car with T-Tops removed and a full 8 point roll cage. I am moving the battery to the trunk this week, (that should help). Are there any other legal tricks I should examine to try and help my situation? I can't think of any. Obviously, with only 260-270HP, i have to spend some time under the hood also, i'll be starting with Chip and Exhaust. I also bet that the driver losing 20 lbs would help this out quite a bit too. eh? Any thoughts?

CrashTestDummy View Member Profile	Jun 24 2005, 03:47 PM Post #2
Veteran Member Group: Advanced Members Posts: 3,897 Joined: 3-July 04 From: Pearland, Texas Member No.: 385	Crossweights aren't bad for a stocker. Weight loss program: Cut two bars off your rollcage? :-) Find the lightest wheels you can that fit the car. Best bang for the buck you can spend. Can you pull the cats? Definitely get a lighter cat-back exhaust. I believe the rules allow pocket porting of the head. If so, do that. There are a lot of things you can do. I think this thread has been done before. You might want to do a search. It was scary what was suggested that was legal. Additionally, if you go to Nationals, look up Mark Madarash and crawl around his car. You should be able to pick up some ideas there.