TUET11009 is the best one. Basically a close ratio 5spd (.80 5th gear) with .63 overdrive. The other version has a very short 1st gear.... the rest of the spread is funky.... and 5th is .75 which puts you too much out of your powerband on the few road courses that you may use it on. Also .50 overdrive is ridiculous and not needed... maybe if you are trying to set fuel economy records.
Unless you are doing endurance racing you don't really need to do any mods to that trans at your power level. I've run stock T56 Magnums in LSx setups making 600-1400hp without issues.
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Project: 1969 Chevelle, alum 5.3, GTS76 turbo, Chiseled Perf A/W intercooler, Holley Dominator EFI, Davis TC, JRi coilovers, 14" brakes, T56 Magnum. CTS-V Recaro seats!
Coffey Fabrication Nashville, TN doing the fabwork! 800rwhp+/25mpg+/9's@150mph goal
https://lateral-g.net/forums/showthread.php4?t=52976
1993 Mazda FD RX-7, built LS7, T56 Magnum, Holley HP, Davis Tech TC, 8.8" 3.73 Cobra IRS diff, DSS axles, Ohlins coilovers, big brakes.
CCW 18x11 front 315/30/18's and 18x12.5 rear on 335/30/18 RA1's, 2850lbs
10.31@137mph 165mph Shift-Sector 1/2 mile speed
441ci AllPro headed motor and 200lb weigh reduction in the works....
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