Did what you guys recommended, grinded the hump out of the motor mount cup and the engine dropped right in! Tranny bolted up , exhaust was tight but fit, now the dreaded wiringactually without the wiring diagram and refrence from ls1tech, I have the starter working and fuel pump, but I have a whole bunch of pink wires I think that are all fused gonig to the injectors and ignition but I am not sure. PCM was done by Allen with an 89 hot tune. can't wait to here it.
91 Silverado 2005 5.3 ,transgo hd2, Yank2600, Nelson Tune, 3" exhaust, 4-6 drop
2004 Silverado crewcab 5.3 3'' Magnaflow exhaust
Red wires are hot. Pink are switched. Black are ground. Blue is fan. Green is fan. Tach is white. Fuel pump is grey I think. Any more questions?
Like you, I had to use my resources on LS1Tech.com for a diagram. I also posted how to convert a harness over there somewhere.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
We should make a sticky of all of he swap info that we have learned over time on LS1truck too. We don't have anything like that on here do we, or am I just overlooking it. Who is responsible for that kind of stuff? It's not you is it Red?
[1/8 mile E.T. - 8.23 @ 82.86 mph w/1.82 60'] '98swb,4/6drop,20"RozziDeeps on 275/40ToyoProxes '98LS1/4L60E,TRCheaTR cam,Ported TB,Billet MAF ends,MSD8.5 superconductor wires,S&P midlengths,!EGR,!cats,2 1/2" true duals w/X-pipe,Dynomax Ultraflows,TCI 3000,billet servo,TCI deep aluminum pan,3.73's w/Auburn posi; Eclipse CD, Rockford 6 1/2's, Memphis 12's, Punch 200 ix, Punch 500x
Thanks Redheart, I have 2 red with white stripe and two orange, 19 freaking pinks! some dark some light. I take it pink is switched power to everything.
91 Silverado 2005 5.3 ,transgo hd2, Yank2600, Nelson Tune, 3" exhaust, 4-6 drop
2004 Silverado crewcab 5.3 3'' Magnaflow exhaust
Yup. When I first saw that, I said screw it. I'm using the stock truck fuse center for now. I may rework the entire harness, or call Allen when I get the money tree growing in my back yard.
5.3L '86 Silverado (E/T: 14.37s @ 94mph) - First Time Out!Test-n-Tune (Nov 23, 2008) - 13.65s @ 98mph
Sweet! I wish I had your wiring Yello91Silverado. How about some pics?
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
The light pink vs dark pink is just age. If you get further back into the harness you'll see they're just about the same color. Red w/white, I had those too but don't remember where they hooked to. Those are in the LS1 harness, right? Always refer back to the wiring diagram colors listed on the PCM chart, those listed on LS1Tech are spot-on.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
The harness is a factory 05 5.3 with a big black plug that plugs into the fuse box, unfortunatly I didn't recieve the fuse box. I'll try to post some pics. I bought the thing on ebay during Christmas , I was the only bidder. This thing only has 5 miles on it, when I separated the tranny from the engine you could see the water line just below the center of the torque converter.
91 Silverado 2005 5.3 ,transgo hd2, Yank2600, Nelson Tune, 3" exhaust, 4-6 drop
2004 Silverado crewcab 5.3 3'' Magnaflow exhaust
Oh hell, that thing was in a flood?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I was so looking for a flood 6.0L! Still waiting on my insurance agent to let me know what's out there.
5.3L '86 Silverado (E/T: 14.37s @ 94mph) - First Time Out!Test-n-Tune (Nov 23, 2008) - 13.65s @ 98mph
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