Im using the 5.7l obs fuse block. I removed ac though. Some things will need to be repinned and wire the pink injector wires will need to be brought to a common ignition source. I just used 2 sources on the fuse block. Repinning the fuel pump is easy. Not sure how similar the 4.3l uhfb is to the 5.7l uhfb, but if its close i could try and help you out
Last edited by shmiet; 07-29-2013 at 02:06 AM.
Back Alley Motorsports 98 GMC
-5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
-TU1 Custom Grind cam(spec speed.inc) -799 heads
-.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top
On the 4.3 fuse box there is plenty of room to add things, that is the route I may take..
Where can you get the pins and parts to add to the block....the fuse block has room to add just no blade holders or what ever you call them. Off the top of my head there are only 1/2 dozen fuses and a couple of relays....its a stripped down WT model...no ac or cruise control.
I wish I knew man- you could try Warehouse Services if you have one in the states(they supply Napa), junkyard fuse block if you can remove them, or maybe a gm dealership? I put in a hotwire kit for my fuel pump so i had an external relay, and i used inline glass fuses for my e-fans and water meth pump-could have put them in the uhfb but it was more convinient.
Back Alley Motorsports 98 GMC
-5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
-TU1 Custom Grind cam(spec speed.inc) -799 heads
-.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top
They are called maxi fuses, just so you know what to ask for
Back Alley Motorsports 98 GMC
-5.3l LM7 bored to 5.7l Thompson Motorsports -72mm T4 Magnum Turbo
-TU1 Custom Grind cam(spec speed.inc) -799 heads
-.660" Trick Flow dual valve springs -Forged Probe Pistons 3.902" flat top
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