AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
- Joined
- Jan 19, 2014
- Messages
- 25,874
- Reaction score
- 13,180
So put me on ignore already
Naaaaaaaa. You have good things to say.
Unless you have a 3.09 low gear,and GVOD being split.
I agree. I have 3.55s in my 375 HP 340 4 speed, and they are perfect. I had 4.56 gears in it for a while, and I did not like them. Burnouts and acceleration were great, but for all around driving, they sucked. I refused to drive on the highway for even a few miles. I don't remember the exact RPMs, but at 55 mph, the motor was screaming. Acceleration and burnouts with 3.55s are still awesome. Plus, your original post said you only planned to run it down the strip a few times.If it's a Street Car - go with 3.55s, and get what You get, at the strip
Well, it did for a bit; 5.13s,4.88s,4.30s,4.10s.All of those might be OK for a much smaller engine, or a better chassis. But with 3.55s I can hit 60@6400 in second-over; no stick-shift required, or 93@6100 in second-over,4 ratios with just one stick shift, or 112@6866 in third;4 ratios,2 stick shifts or 65=2236 in 4th-over;between 3 and 5 ratios ,lol.If you got a gear vendors unit. Then your rear gear should start with a 5! lol
Well, it did for a bit; 5.13s,4.88s,4.30s,4.10s.All of those might be OK for a much smaller engine, or a better chassis. But with 3.55s I can hit 60@6400 in second-over, or 93@6100 in second- over, or 112@6866 in third, or 65=2236 in 4th-over,lol.
Street;85" roll-out, 295/50-15s
Track; 87" roll-out, 325/50-15 DRs
Your math won't work for me.
I get 5700=82mph with an 87" roll-out in 1.39 third gear.
I get 5700=114.5 with an 87" roll-out and direct 4th.
I get 5700=110 with an 83.55 roll-out, or 26.6 inch diameter tires.
I get 5700=110 with 90.6" roll-out in third/over (1.084), which is a 28.8" tire
AJs posts are great. And always very informative. He usually takes the time to spell out the **** that many of us (I included) can't be bothered to cause we don't wanna write another novel.
That said. If your gear ratio doesn't start with a 4, then you have a problem. It should always start with a 4.
If you got a gear vendors unit. Then your rear gear should start with a 5! lol
What were your times?
I ran a best of 7.27 @ 94 mph shifting at 5400 with a 5.14 gear and 30 inch tall M/T 315/60 drag radial at 2950 lbs. If I shifted any higher it would slow down. 8 in. PTC convertor. Only 1/8 mile tracks in my state.