Will i be able to use my 700R4 that is already in my 89 chevy when i finally get to put the 6.0L in or will i have to get a 4L60E? I'm pretty sure everything would bolt up the same but i'm not sure about the wiring...i was thinkin when they built the harness and flashed the PCM they'd be able to make it work together but i don't know? Can anyone give me some insight on this??
89 Chevy Ext. Cab short bed, 5.7L TBI (gonna be a gen III 6.0L) custom built tranny, and all converted to 6 lug for 07' Silverado 20's
I think there is an adapter plate out there to do this, or maybe its for the 6.0 to run an older tranny,but i cant remember. Maybe someone has some input.
Get a 4L80e for your conversion. You'll need it eventually after you break the 700r4 and one or two 60e transmissions.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
It would require a spacer for the flexplate and the pcm could be programmed for a manual transmission. Shouldn't be a problem other than longevity because of the newfound power like the others statedOriginally Posted by the_blue_beast89
You would also have to fab something up to mount the tv cable to the throttle body...bowtie overdrives might have something you could use.
also look at this post regarding a gen1 trans behind a genIII motor:
http://www.ls1truck.com/forums/lsx-t...tml#post136450
im with red 6 4l60s later .if ure gonna be putting the power of the 6.0 ,you miight as well put an 80 in .if i did it over again and knew what i did now i would of started with an 80.now i just cant gwet the time too accomadate an 80.if the conversion is gonna cost ya for the 700r then i would put it towarrd an 80 e .trust me you wont regret it.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
So it seems that everyone is thinkin the 700 won't take the power? I wasn't sure since the guy that built it for me said it should take around 500hp...without tearin it up...
89 Chevy Ext. Cab short bed, 5.7L TBI (gonna be a gen III 6.0L) custom built tranny, and all converted to 6 lug for 07' Silverado 20's
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