T56 Swap

[George C]

depending on youre power level and weight of vehicle i would seriously weigh the pros and cons. From my experience the weight of my truck and the power i made it was extremely hard to flat shift it. When i did i broke the trans every time. I dont run a stock trans either. Mine was the Viper spec version from D&D perfromance.

keeping vehicle in drive wont lock the door locks after 20mph also not sure if cruise will work either. i removed all wiring form mine and just did it as a manual only style wiring. my gauge cluster is stuck in GM's default setting of 2


you need crossmember from a 5 speed truck of same year, ou need pedal assembly from 5 speed truck, you need to make a nut plate for fire wall, you can get a master cylinder from any GMT800 truck. you use a stock 4L60 auto driveshaft, you use master from a 02 LS6, use clutch from fbody and youll have to make youre own shift rod

[trx2stroke4life39]

what about a ZF-6 transmission if they can handle a modified duramax they shouldn't have a problem with what mild to even wild LS puts out.

[George C]

not a performance tranny. youre talking about a truck tranny vs a performance trans.

dmax is only mid 300 hp and mid 500 torque

[zebra]

for one, if you wanna keep 4x4, you'll have to custom fab a tailhousing for the T-56 or run a divorced case.

second, 4.10 rear might not be enough. i've seen a guy keep 3.73s, but most go to something around 4.56 or 4.88s & i've seen one guy run 5.33s since he kept his taller tires (32s or 33s i think). the T-56 from an fbody has a 2.66 first gear so you'll want some rear to compensate or it'll be a bit harder on the clutch.

third - (for whoever suggested the ZF S6-650) i believe it requires a 2-3" body lift to fit under the cab. not to mention it has crazy low 1st gear (5.79:1) and weighs around 200lbs. it also requires some fab work to use in a half ton truck

fourth - if you plan on towing with the T-56, you might wanna pass on anything bigger than a jet ski.

[Frenchy]

As cool as the t56 swap sounds, it makes yor truck rather useless as a truck

[oleshifty]

i'm assuming a t-56 is the 6spd found in fbodys/vetters.

If that is the case, you hear A LOT more stories of autos breaking then stick shifts. Guy that comes into my work all the time has a SSS, vette, z28, etc...says the vette with stick has most mods, and only one he hasn't blown the trans in.

I realize weight is different, but hp/torq should be very similar, so if autos break with less weight...the sticks MIGHT be more dependable.

[jetersaurous]

ISNT YOUR TRUCK 4X4? Gonna be hard to do a 6 speed swap.

what would make it hard

[jetersaurous]

As cool as the t56 swap sounds, it makes yor truck rather useless as a truck

how so?? i never tow/haul

[jetersaurous]

for one, if you wanna keep 4x4, you'll have to custom fab a tailhousing for the T-56 or run a divorced case.

second, 4.10 rear might not be enough. i've seen a guy keep 3.73s, but most go to something around 4.56 or 4.88s & i've seen one guy run 5.33s since he kept his taller tires (32s or 33s i think). the T-56 from an fbody has a 2.66 first gear so you'll want some rear to compensate or it'll be a bit harder on the clutch.

third - (for whoever suggested the ZF S6-650) i believe it requires a 2-3" body lift to fit under the cab. not to mention it has crazy low 1st gear (5.79:1) and weighs around 200lbs. it also requires some fab work to use in a half ton truck

fourth - if you plan on towing with the T-56, you might wanna pass on anything bigger than a jet ski.

eh, my 4WD is shot anyways, weight reduction. and if i were to keep the 3.73s, what would happen

[jetersaurous]

what about a ZF-6 transmission if they can handle a modified duramax they shouldn't have a problem with what mild to even wild LS puts out.

not a performance tranny. youre talking about a truck tranny vs a performance trans.

dmax is only mid 300 hp and mid 500 torque

that might work, i dont plan on FI or spray. just a cam upgrade is all i plan in the future really