09-23-2013, 05:31 PM
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#22
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Speed Freak
Drives: 2013 ZL1 Camaro, 2016 Camaro SS
Join Date: Jun 2013
Location: Ardmore, OK
Posts: 2,637
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Quote:
Originally Posted by PMJ
I don't claim to be a pro, but I think you'll be disappointed w/3.73 gears in the mile. 2.9x or 3.27 would be more desirable... I think just like the 1/4, you want to finish the mile running out 4th gear, but worse case 5th. I'm pretty sure you wont be able to run out 6th and if you do have enough power, I hear there is a good chance you'll strip 6th...not many teeth...
I'm trying to find 3.27 to and plan to run out 5th. But the fastest mile cars are geared in the 2.x.
Regardless, it will be a blast!
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I'm pretty deep into 4th in the quarter mile. I max out 5th around the half. Gives me a half mile to hit the limit in 6th. When I discussed changing the gear sets for 5 & 6, the transmission builder who did the job recommended I go with ZR1 gears. Apparently they are significantly thicker and don't fail in 5th and 6th like the other higher gears do. They also have lower ratios so this limits the top end. Unless I'm bumping the limiter real early, I think this is the best possible ratio to ensure I have a chance to hit 200. The automatic rear end and corresponding ratio swap is the next choice if I feel I need more speed. I will just have to see what happens.
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2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq
2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date. 
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