i personalty think that the ls1s power band can be better used with a five speed, and a few other reasons that i personally like: i love that the engine revs would climb slower then a 6 speed
That's not true. The ratios are taller on the T5 from 1-3, so your revs would climb faster, not slower. Either way it wouldn't be much; the gear ratios are very similar:
Gear : 1st : 2nd : 3rd : 4th : 5th : 6th
T5 2.95 1.94 1.34 1 .74
T56 2.66 1.78 1.30. 1 .74 .50
Of course there are some variations of the gear sets depending on the year, car used on, etc., but those are the common ones.
BUT the T56, how laborious is it to swap in?
I've never done the swap personally, but it would be much easier than the T5 since the T56 was original equipment for the manual cars. A short list off the top of my head would be:
M6 Pedal assembly
Clutch fluid reservoir
Throw out bearing
Clutch pivot fork
Shifter & handle
Reverse lockout solenoid
Skip shift solenoid (most delete this)
Backup light switch
VSS (might be the same off yours)
In addition to those parts, you will also need to modify your harness to accommodate the switch, solenoids, and VSS, and the PCM will need the auto tuned out. It would also be recommended to put higher rear end gears than the auto's 3:23.
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