I was registered @ LS1tech b/c I had a 98 T/A 6spd and well THAT SITE IS UNBEATABLE,lol. Anywho, I wanna get back in the truck seen again I had a 94 GMC Sierra 350TBI that had some work done when I was in high school and well I miss it but after having the T/A I see how much better the LS genereation engines are. The thing is I want a truck but I want it in a manual I know the 4.8 has the only manual option. The tricky thing is I want it to be a 6spd . Ok so do I get a :

99-04 RCSB 5.3 Auto and then convert to a 6spd
or
99-04 RCSB 4.8 5spd and then eventually convert it

What do u guys think? Autos are nice but i like the manual tranny better(especially a 6spd I miss my T/A )

 

Get a 99-04 RCSB 4.85spd do a 6.0 and t56...be way faster and way cooler than the above two options...

 

Depends on how much work you want to do. If you're planning on swapping motors like Injected said, then I would go with the 4.8/5-speed, a little less fab work to be done. If you don't want to swap motors, I'd definitely go with the 5.3 and just accept that it's gonna take a little more work to do. IMO, the extra cubes in the 5.3 would be worth it.

There are several members who have done T-56 swaps.

vanillagorilla, 1truess, xrevx1, mjhoward, and retsell have done it, maybe more.

Here's some good threads to check out...
https://www.performancetrucks.net/fo...light=t56+swap
https://www.performancetrucks.net/fo...light=t56+swap
https://www.performancetrucks.net/fo...light=t56+swap
https://www.performancetrucks.net/fo...light=t56+swap
https://www.performancetrucks.net/fo...light=t56+swap
https://www.performancetrucks.net/fo...light=t56+swap
https://www.performancetrucks.net/fo...light=t56+swap

Do a search for T56 swap and you will find lots of info.

 

Thanks yea I was just looking to see what you guys think would be the easiest route. Honestly the 4.8 5spd would be a good buy to satisfy my shifting craving while I get everything together but I cant even find 1 single 4.8 5spd RCSB anywhere. When I wasnt looking into getting one they were everywhere though, go figure huh . thanks

 

mjhoward started with a 4.8/5 speed and swapped it for a T-56. You might try sending him a PM and see how much had to be changed out to accomodate the new tranny.

 

seems that the t56 swap from a 4l60e would be prettu difficult. work on finding the 4.8 5speed and do that way