I like this plan. We used those same 700lb springs on the front of the cheetah for a while (I sold those and the 325? lb rear springs to Scott). We've got 8x475lb on the front now, take-offs from my autocross car (along with the old revalved Bil HDs, same valving as Dave Barton's, FWIW). Front of our car feels good, except for the slight push in slow/flat corners due to the welded rear.
We use a 25mm front bar. You could probably run a skinny front bar with the 700s and leave it as-is, since you've got other work to do first. But obviously I agree that it's a bit more spring than I think we need with street tires. And those 700s should do well on a V8 autocross car. I use 7x550 on the front of my car, and I'm going a bit stiffer if/when I get it back to some autox events this year.
I think more importantly, you should soften the rear. We use cut overload springs and the stiff R-Sport shocks. That whole car felt stiff when I drove it, but I think that comes from the rear not being compliant. For easy driving, I like the front relatively stiff and the rear soft. I never get into a bad spot with that sort of setup....the car doesn't step out under braking, ever, and I drive it off the front tires so I'm always in control of the balance via the steering wheel.
Regarding the swirlpot, what are your plans? Lemons doesn't allow for an external one last I checked. We did it inside the cell. A pump in the cell feels a "container" of fuel. The return dumps into this container as well, therefore it's always overflowing (no trap doors in this container). Then an external fuel pump draws fuel out of this container which resides inside the cell. I don't remember the exact figure, but we pumped something like 20gal into our 24gal cell the time we ran practice til the car sputtered, and wanted to verify how much fuel we could get out of the cell. The car will do 3hr, and when it does sputter, it sputters badly. This is good. It was an improvement over our other attempts where the car would start to hesitate on left turns, but only slightly, so we'd have to drive for a while with less than 100% reliable fuel delivery, which was really frustrating. In the races where I started, and the car ran solid the entire first stint, and I didn't get a black flag...we would do our first pit stop from 1st place. If we ever got the car to run 100% the entire race, AND we got good at pit stops, AND we got no flags, we could win. It'll never happen, though.
We use a 25mm front bar. You could probably run a skinny front bar with the 700s and leave it as-is, since you've got other work to do first. But obviously I agree that it's a bit more spring than I think we need with street tires. And those 700s should do well on a V8 autocross car. I use 7x550 on the front of my car, and I'm going a bit stiffer if/when I get it back to some autox events this year.
I think more importantly, you should soften the rear. We use cut overload springs and the stiff R-Sport shocks. That whole car felt stiff when I drove it, but I think that comes from the rear not being compliant. For easy driving, I like the front relatively stiff and the rear soft. I never get into a bad spot with that sort of setup....the car doesn't step out under braking, ever, and I drive it off the front tires so I'm always in control of the balance via the steering wheel.
Regarding the swirlpot, what are your plans? Lemons doesn't allow for an external one last I checked. We did it inside the cell. A pump in the cell feels a "container" of fuel. The return dumps into this container as well, therefore it's always overflowing (no trap doors in this container). Then an external fuel pump draws fuel out of this container which resides inside the cell. I don't remember the exact figure, but we pumped something like 20gal into our 24gal cell the time we ran practice til the car sputtered, and wanted to verify how much fuel we could get out of the cell. The car will do 3hr, and when it does sputter, it sputters badly. This is good. It was an improvement over our other attempts where the car would start to hesitate on left turns, but only slightly, so we'd have to drive for a while with less than 100% reliable fuel delivery, which was really frustrating. In the races where I started, and the car ran solid the entire first stint, and I didn't get a black flag...we would do our first pit stop from 1st place. If we ever got the car to run 100% the entire race, AND we got good at pit stops, AND we got no flags, we could win. It'll never happen, though.