VHR + FD Gear Ratio upgrades - 3.9 and 4.08

Denny McLain

Basically with about every bolt on engine mod available during logging for fuel/air and timing with the AccessPort, the best 0-60 time I got was 5.01. it appears to be pretty accurate. This was achieved doing about a 3000 rpm launch, letting the tires grab and giving it hell after that. Granted, on a sticky drag strip and playing with tire pressures, could get it a bit lower but probably not much more than a couple of tenths. The problem again with 0-60 is the launch as it grossly favors cars with slicks, all wheel drive or rear engine.

My guess is the drag site made an auto assumption you were using slicks and probably a 1.4-1.5 sixty. The best 60 with my Vette using MT Streets was a 1.52 and it being an honest 600 hp car. Also broke a bunch of crap too because of too much bite.

Trust me.....with you all the way on the benefits and surprised how many people aren't aware of how much better the cars perform and how much more fun to drive. Frankly didn't know they were available or would of had the 4.08's long ago.

Once the gears are in I'm sitting on the fence for a bit. Biggest issue is the cars are so new everyone is working out the bugs. Still can't tune the car with the AccessPort as the software isn't ready so feel like I'm stuck in the mud for now.