The exact same way the truck is already wired and ran. Nothing needs to change for a 5.9 magnum.

 

If the truck had a 5.9 to begin with...many 1st gen pre 92 had v6 or v4 or LA 5.2. With TBI or carb. So the wiring can be easy or not. Just depends. Myself I'm keeping it simple and old school. Carb and GM style distributor with no computer.

 

Ya, always forget about 91 and older. Let me rephrase then lol

If it has a magnum, nothing really needs to change, if it has an LA in it, only minor changes are needed.

 

Correction.

With 95% of the pre-Magnum Gen1's being 3.9s, MOST of the pre-92's are 3.9s, TBI.

A few are 4-banger (I4, not V4). There were the Shelby V8's and then the 1991 LA V8.

For the LA 5.2's, you can cheat dropping a Magnum 5.9 in and use heads drilled to take a LA intake and drop back on the LA intake to keep the TBI; that only makes sense if you don't care to rewire the truck, however. *grins*

RwP

 

My 5.9L magnum is running ported heads, max air gap mpfi aluminum intake, custom grind cam, larger throttle body, larger injectors, double roller timing chain with tensioner, hooker long tube headers. When I did my research for my cam purchase, it was recommended that I would go for an aftermarket ecu that would allow for adjust-ability.