Originally Posted by carnut169 (Post 1236409)

I ordered the Dorman HELP AC Bypass Pulley 34157
Amazon.com: Dorman HELP AC Bypass Pulley 34157: Automotive

Originally Posted by cordycord (Post 1237362)

What are your impressions of the 3.42 and the MV5? For the tracks out here, the MV5 actually seemed like a better choice given the gobs of torque, but bench racing and reality are often at opposite ends of the spectrum.

Originally Posted by ThePass (Post 1236287)

And now that you're on the road with it, what is your feeling on the getrag 3.42 ratio? That MV5 6 speed has a really short 1st/2nd and a really long 3rd, does the 3.42 make quick work of 3rd gear or does it drag on a bit?

Originally Posted by carnut169 (Post 1236409)

I *think* the 3.42 will be a good ratio for the track, but for a street car the 3.2x the V8R used would be better. The ratios used in the AY6 trans are a little odd. 1st is a stump puller. Great for burnouts! 4th to 5th is almost the same but 6th is a good bit taller. We'll see...

Originally Posted by ThePass (Post 1237389)

I just asked that ;)






6th is basically an overdrive, with a big drop for the 1:1 5th down to 0.75:1. The thing I've tossed between, given a couple of our SoCal tracks that would see a 300hp car over 140mph, is whether it would be better to gear longer so that you don't need 6th at all at those tracks, but be stuck with longer gearing everywhere else, or just go short and accept that you'll need to nudge into 6th on the front straights for WSIR and ACS. You aren't accelerating much up at those speeds anyways, so I've decided it'll be better to go short on the rear ratio.

Originally Posted by cordycord (Post 1237460)

3.46 3.23

34 37 1st
65 70 2nd
96 103 3rd
120 129 4th
143 153 5th
170 182 6th

Originally Posted by Lincoln Logs (Post 1237461)

I've been talking to Ryan here and there about diff ratios and based on this info I feel like it is a 3.73 diff or bust for a track focused car.

Originally Posted by cordycord (Post 1237462)

But....torque!!! Carroll Shelby said horsepower sells cars but torque wins races. LFX has what...278ft/lbs torque?! The first thing I wanted to do once I got the turbo on my car was go for longer gears. I'd think the same thing would happen with the LFX.