05 Chevy Crew cab

i just bought an 85 GMC and was wondering on doing an LS swap and i need info on who to go with to get a wire a harness, and to have fuse box for it as well

FFDP

iTrader: (2)

Find a complete pull out with wiring harness, that should solve most of things you need to find.

montecarloss

iTrader: (18)

I used speartech on my builds

ezdaar

iTrader: (1)

MuscleRods 94-2004 S-10 LS Conversion Kit

S10forum, everything you will need to know and how to save alot of money.
Google seems to have the most info so far.

lowchevytrucks8503

iTrader: (1)

I used PSI conversion for my ls1/4l80e in my '85 C10. Great quality, $585 or so.

Shack

Get the wire harness for with LS if you can. Also, I purchased a Painless 7-circuit harness for under the hood. It will receive its power from the "ignition" circuit of the main harness so essentially everything under the hood will be a stand alone harness from the main truck harness.

stroker87

iTrader: (6)

+1 PSI harness

we used one on my sons 94 silverado lq4/4l80e swap, worked out really nice and it was long enough we was able to mount the pcm under the dash

fullboardmax

I got a harness from Lsx specialties. I was not impressed with the split loom on the psi harness.

fullboardmax

Granted it hasn't been tested yet. But it looks awesome.