Hey Dave and John Sr. or John Jr., Could you guys tell me what the wheel base is on your cars? Also does anyone else have any opinions on what wheelbase should be used for what ET. In specific 9.00 and quicker. Thanks Guys!!!
John Z. .....Are you planning to build a "little car"? If so, DON'T DO IT. I'm on the phone with John Massoud, and he and I are of the opinion that "The more wheelbase, the better!" :TU:
John/Stan: The Opel is 100.5". It seems to go straight. I agree with Doug about "LENGTH IS IMPORTANT". The Riv (if it ever gets done) has a 116" wheelbase.
Longer is better mine is 115.But the longer it is the farther back you need to move the weight.You also need to keep the crank center height 10" or higher or you will have a hard time keeping the weight transfer after launching.We will be experimenting on cch when mine is done to findout where it works best.We beleive the farther back you have the weight the lower the motor can be in the chassis we'll see.Short wheel base cars like lower cch the average protock is 9"to 9.5" witha wheel base of 105 I think.
Rod's is 96" It does well for it size. Big things in small packages!! Longer would make things easier though. At Salem I believe Dave said his was 105"
When we built my car, it was just back-halved and we set the motor back two inches using the "big car" mount locations in the stock front chassis. A couple of years later, when I wanted to have a full tube chassis, we front-halved my car and we set the motor back about six inches from stock and up about six inches in the chassis from stock. It transfers the weight just PERFECTLY! :TU: You've got me curious though, as to the crank center height. I'm gonna have to check that this weekend at E-Town. BTW, what is the cch on a stock GS? My car sits so much lower to the ground than stock, that my cch might be lower than stock.
Im not sure what the stock cch was.My car still has the stock front clip for outlaw 10.5 rules but we set the engine back about 6 the center line of #1 cylinder is centered with the spindle CL.The front of the engine is lower than the rear due to the ride height of the car to line up the drive line in a staight line.We are starting with a 10" cch.The weight in the car should be way toward the rear being that I sit where the back seat used to be Im not a small guy we also kept the fuel cell in the rear etc.We may end up at 11"cch or higher when we start testing high hp 10 inch tire cars realy need good weight transfer to keep the tires working. Doug I would be curious to hear what your cch is just for reference.
I sit just about in the stock location. Back when we built my car in the early 90s, nobody besides pro-stock was mounting the seat on the rear floor area. Now, of course, that's all the rage! If I was building my car now, I'd have mine back there too! With a funny-car cage, of course. I'm not a small guy either, so it would REALLY transfer the weight if I could sit back a foot or so from where I am now. With the new 8.50/funny-car cage rule, I may have to make the change one day. I'll post my cch after I check it.
105" is correct . I added 6 " after having it on the roof once . Things happen fast it a short wheelbase car and I'm getting slower . Length helps keep it straight , I agree keep the cch as high as possible , and under 100" can be a handfull !
