'94 Jimmy build
Well, I was set on a v8 swap, until I started discovering how good the CPI 4.3 is power wise. It makes more power than a TBI 305, and about as much HP as a TBI 350. So, I decided to build up what I had, instead of swapping in a V8.
The truck is a 4.3 CPI, 4x4, 4 door, automatic, and I swapped in a manual transfer case. I had tested my painting skills on it, having done a complete repaint, and kept it otherwise stock. I decided to wait until finished to upload all my pictures, and do it all in one shot. SO, here's the pictures.
When I first got it, on 31's with no lift, and lots of rubbing when turning:

Cleaned up, on stock-size tires

After home-done paint job, roof rack removed

The truck is a 4.3 CPI, 4x4, 4 door, automatic, and I swapped in a manual transfer case. I had tested my painting skills on it, having done a complete repaint, and kept it otherwise stock. I decided to wait until finished to upload all my pictures, and do it all in one shot. SO, here's the pictures.
When I first got it, on 31's with no lift, and lots of rubbing when turning:

Cleaned up, on stock-size tires

After home-done paint job, roof rack removed

Last edited by 91chevywt; Apr 25, 2012 at 06:34 PM.
Engine before teardown, lots of mud, it's been through some stuff


Some cleaning and painting


Back together after all the work, I'll describe at the end


Body lift installed, with stock size tires. I redid the gold pinstriping with silver, and replaced the stripe on the side trim since the gold was wearing off


Some cleaning and painting


Back together after all the work, I'll describe at the end


Body lift installed, with stock size tires. I redid the gold pinstriping with silver, and replaced the stripe on the side trim since the gold was wearing off
Last edited by 91chevywt; Apr 25, 2012 at 06:36 PM.
So here's what's happened. I did a 3" body lift, added 31" tires. I also did a top end rebuild. I kept the stock cam, as I understand it's the best 4.3 v6 cam that came stock. I did light cylinder head porting, and added 1.6:1 roller rockers with new valve springs. The whole top end has new gaskets. I also replaced the CPI unit, added an MSD coil. The exhaust has a hi-flow cat, and added a dynomax single-out exhaust with a stainless tip. The old exhaust was just beat and had numerous holes. There's a bunch of other stuff too that I'm forgetting, I'm sure. It runs like a raped ape at the moment. Stock it had 200 HP, I'd estimate it to have gained 20 or so HP.
I spent all winter chipping away at it, cleaning up all the parts, running a tap and die over all the bolts/bolt holes, and making the engine as new as possible. I'm hoping it lasts a long time. I'm doing all of this so I have a sort-of online diary of the build. Any questions, feel free to ask
I spent all winter chipping away at it, cleaning up all the parts, running a tap and die over all the bolts/bolt holes, and making the engine as new as possible. I'm hoping it lasts a long time. I'm doing all of this so I have a sort-of online diary of the build. Any questions, feel free to ask
Last edited by 91chevywt; Apr 25, 2012 at 06:43 PM.
For the front bumper, I just left it as is. With a black grille and fog lights, the gap doesn't stick out so much. The back bumper was a different story. The 3" gap was unbearable, as you could see the top of the gas tank and the body mounts. What I basically did was take the back bumper brackets out from the frame, and bolt them to the top of the frame, adding a steel plate between for support. The hitch still sits low, but I don't mind it so much.
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