1996 Blazer Build
 

So I thought I would share my build(s) with the group. I have learned a lot of valuable intel from this site and I wanted to share my progress....

Bone stock form. 94,XXX original miles, 4WD. Base model-ish LS. Seller says he bought it from an auction house and that is used to be a county vehicle. Bought it Easter Sunday 2016:
https://blazerforum.com/forum/attach...ine=1473888872
https://blazerforum.com/forum/attach...ine=1473888872

So after about a month or so of it sitting in my driveway, 2" PA body lift went in:
https://blazerforum.com/forum/attach...ine=1473888872

Then installed a 2.5" RC lift:
https://blazerforum.com/forum/attach...ine=1473888872
https://blazerforum.com/forum/attach...ine=1473888872

I noticed the chrome grille was the only chrome piece on it, so I decided the black grille would suit me better in keeping with the utilitarian theme, complete with functioning hi/lo beam LED headlights:
https://blazerforum.com/forum/attach...ine=1473888872
https://blazerforum.com/forum/attach...ine=1473888872

And here's the finished product (suspension wise):
https://blazerforum.com/forum/attach...ine=1473888872

i couldn't believe GM actually used 3.08 gearing in ANY 4WD vehicle. I had a '00 2wd S10 4.3 that had 3.08, and even that seemed sluggish. I was a bit disappointed to see my RPO code revealing my 3.08 ratio.
So I then was on the hunt for better gearing, especially after the 31x10.5x15 AT tires were installed.
I struck gold! I found a low mile, '03 crew cab S10 at the junk yard, complete w/rotors, 3.73 gears (GT4) and G80 locker w/cpmplete disc brakes for $220 :) I was pretty pleased with that trifecta purchase, as my 3.08 axles were open front/rear and drum brakes.
Once that was installed, I found a great deal on a 3.73 front diff from a '03 crew cab Sonoma ($150 shipped). I already had the Bravada shaft conversion kit ready when the front diff arrived, so I got to install that, along with the newer design slip-in style CV axles as I found my '96 CVs had much smaller shafts and wouldn't work.
No more vacuum-actuated front diff engagement!

On to the interior:
No pics of these upgrades, as I'm not as enthusiastic about documenting everything with pics.
This was my first vehicle ever that did not have a tach, just speedo & gauges, so I sought out a cluster w/tach out of a '96 and got lucky. I found one on Ebay w/only 82k miles :) While the dash was apart I upgraded the stereo with a fairly simple single din Pioneer w/Bluetooth & integrated phone and LED lights throughout the dash, cluster and interior.

So far I'm really happy with the progress, as this will be my replacement vehicle aftger VW buys back my gross pulluter TDI.

411 PCM Swap:

I HIGHLY recommend this swap if you have a black box PCM, specifically a '96 PCM that has TSBs out for bad solder joints causing trans failures, etc.

Thx to Lextruck for providing me the pinout chart to make it work. I cannot believe the difference in the smoothness of idle, shifting, etc., over the older black box PCM.
I was kind of forced into this swap as I blindly thought I could tune my '96 PCM, then realizing I could not.

411 PCM done!
https://blazerforum.com/forum/attach...ine=1473890379

Scored a STEAL on a 100k mile 6.0 LQ4....it was such a great deal I think I'm going to freshen up the heads and shoehorn it into my '96 :)
https://blazerforum.com/forum/attach...ine=1473890868

Found a pic of the Bravada shaft upgrade on the 3.73 diff:
https://blazerforum.com/forum/attach...ine=1473890947

Nice build so far. I can't imagine how sluggish that thing is with 3.08 gears.

It was pretty bad, even with the factory 235/75/15 tires.
It is MUCH better now w/3.73.

im doing a ls swap here soon most parts i have already just need to find someone with a tig to cut and weld the pan to fit and clear the diff

If you have the cash, check out Milodon (part #31083). This oil pan is designed specifically for the S10/Blazer 4WD and ZR2.
That's what I bought for mine.

I've been away for a while and I suck at documenting with photos, so here is the latest:

The 5.3 found it's way in! Here's a pic of the Milodon oil pan made for the 4WDs:
Attachment 30697
Attachment 30698

Just after I set the engine in place:
Attachment 30699

Almost sits too high:
Attachment 30700

Out of curiosity, I set the factory 4.3 radiator in place to check the clearance:
Attachment 30701


Tight fit, had to cut that coil pack mount off to clear, but surprisingly, that and shimming the 2 front steering gear mounting tabs, that was ALL I had to modify!
Attachment 30702

I decided to take a chance and experiment with the truck accessories and the possibility of using the mechanical clutch fan. I couldn't use the GM fan hub, but a guy on S10forum.com told me about using a fan hub from a '95-'97 Ford Explorer 4.0 hub, which is a full inch shorter than the GM unit and screws right on to the GM water pump snout. I was also able to bolt the GM fan assembly right to it:
Attachment 30703

I bought a upper radiator hose for a full size Silverado. I cut about 1'-2' off each end in order for it to fit to my liking;
Attachment 30704
Attachment 30705

Pic of the clutch fan assembly and factory 4.3 upper/lower shroud in place:
Attachment 30706
I didn't want to risk breaking the brittle tanks on the 4.3 radiator, so I drilled and tapped to 1/8" NPT the top of the water pump:
Attachment 30707


Getting close:
Attachment 30708
Attachment 30709



I really liked the idea of reusing the factory oil filter mount and cooler, so I drilled the in/out side of the cooler facing the engine to 1/2" NPT and used the Milodon remote oil filter hoses only. Here are the holes drilled and tapped:
Attachment 30710
The top hose looks crooked because it is. There wasn't enough meat in the aluminum to drill straight down so I had to improvise:
Attachment 30711
Attachment 30712


Here's a bad pic of the clearance between the factory truck manifold and the stock steering shaft, along with the newly installed Flaming River u-joint:
Attachment 30713

Tight fit:
Attachment 30714



Even after cutting the EGR provision off the pass side manifold and welding a plate on, it STILL touches the shock tower a tad. I'll deal with that after I hear it run :)
Attachment 30715

This is a pic of the driver's side manifold. The collector was pointing straight at the frame, so I cut the collector off, and made another 45 degree angle cut to favor the engine side of the manifold and rewelded the collector, now it points between the front driveshaft and the frame:
Attachment 30716
Another angle of the modified driver's side manifold:
Attachment 30717

The pass side collector didnt need to be cut. It was aimed in a good spot. However, the outside of the collector flange was hitting the pass side fender wheel well bracket, so I cut it off. Now it fits!
Attachment 30718


So it looks like I can reuse the factory 4.3 airbox :)
Attachment 30719
Attachment 30720


As of yesterday, shes alive!!
http://i264.photobucket.com/albums/i...h_IMG_2966.mp4