Anyone ever tried this.....

[Moody]

I'm in the process of putting my 70 K5 back together and haven't made up my mind on which tranny I'm going to use. My engine is a 406 with vortec heads, comp XE268 cam, weiand action plus intake and quadrajet carb. My running gear will be HO72 with detroit locker and 4.10's with a Dana 44 up front. At this time I'm planning on running 36 Iroks. I've pretty much ruled out a 700R4 because I don't think it will stand up to the torque my motor will make and I don't want to be replacing the tranny anytime soon. I'm not sure I want to go the TH400/205 route due to moving engine/transfer case etc and factory TH400/205 are kinda hard to find. However I was thinking about rebuilding my TH350 and using a 2.75 gear set for a deeper first gear. This would be better than the factory first gear but not quite as deep as a 3.08 in the 700R4. I could still use my current 205 transfer case without moving anything around and I know a guy who could build it to hold up to the motor. Sorry If I'm rambling....just want to know if this is a good/bad idea or if anyone else has tried this setup........

 

[1979jimmy350]

if the 700 is built right you should have no problems plus you add the benfit of overdrive so you can keep the RPM's down at higher speeds

 

[Moody]

Overdrive would be an added benefit but I won't be doing much freeway driving. With 36's and 4.10's my rpm's should be around 2500 with a TH350. I am more concerned with reliability and off-road performance.

 

[resurrected_jimmy]

if you don't need overdrive run the TH350