72 K5 Blazer engine/trans swap 5.3/4L60

[Gunny Davis]

Update on the transmission installation.
Everything is mated up and seems to fit fine till I roll under the Blazer and find the corner of my Trans pan sitting on the double u joint of the front drive shaft. What the ???
After staring at it for a while, I took the pan off and beat the **** out of the corner... hopefully got just enough clearance out of hammering in the corner.
http://67-72chevytrucks.com/vboard/a...1&d=1318993082

[Gunny Davis]

OK! so after tracking down wires one by one for weeks I found that my shift linkage had the Trans in R when I thought it was in Park... =no ignition.
A simple adjustment of the shift linkage and everything seems to work. Hopefully try first engine start tomorrow.

If any one has used the 99 Instrument cluster I need some help with wiring.
where do these wires go?
A4 Brn 41 Fused ign feed -
A5 Gry 1036 Serial data class 2
A12 DkGrn/Wht 1932 Trans shift select switch signal
B5 Ppl/Wht 1382 LED dimming signal

[Gunny Davis]

So I finally got the instrument cluster hung and all set up. All the gauges work and I am super excited. Can any one tell me how to turn off / get rid of the "Security" light on the Message window for the '99 cluster?

After hooking everything up the battery was dead after only sitting 2 days. The "Security" warning is the only thing I can think of since the truck has sat for a month and no problem till I plugged in the '99 cluster.

As you can see the glare is pretty bad... any suggestions on reducing the glare from the plexiglass?

[whitels1]

Nice work, I'm digin the gauges.

[Gunny Davis]

A little update

I decided to go with a SkyJacker Add A Leaf to raise everything up 2inches.(Needed the clearance to get the Engine crossmember off the Differential)

Front Springs- Had to cut the spring clamps off the front and trim 1/4 inch or so in order to get the new leaf to fit in.
Rear- had a local Spring Shop(Champion Spring in FTW) rework the spring for better fit and replace the friction pads

[Gunny Davis]

Rebuilding the spring packs was a pain in the ass but everything is done... well except for the Rear UBolt Plate the previous owner had welded and the repair snapped as soon as I toqued down the UBolts.
So I have got to find a replacement for the broken Rear UBolt plate. HELP!!

[Gunny Davis]

Found the UBolt plate at ATSsprings.com. Got every thing wrapped up and seems to work great and i got the clearance I needed.

This thing has been running so good and I have been completely impressed with the new power I have. Sounds great idles smooth... Untill.......

I fill up with gas and head for the Lake. Didn't get 2 miles and sputtered jumped twice and stalled. Started right back up and continued to jump and stall under a load like acceleration, even power brake or going up hill. I limped back home. It will sit and idle all day sounds fine but stalls if i try to punch it or take off. WTF????????

Really need some help on this one

[Gunny Davis]

Found the engine was throwing code P0135(Bank1 sensor 1 heater circut malfunction)
Did some research and found the common thread with this code is often Dirty MAF
Got some MAF cleaner and gave it a good once over
Swaped the L O2 with R O2 just to be sure.

Fired up and is running like a champ, no more codes and smokes the 33s
problem solved and back on the road

[Jdubs71]

Originally Posted by Gunny Davis

Found the UBolt plate at ATSsprings.com. Got every thing wrapped up and seems to work great and i got the clearance I needed.

This thing has been running so good and I have been completely impressed with the new power I have. Sounds great idles smooth... Untill.......

I fill up with gas and head for the Lake. Didn't get 2 miles and sputtered jumped twice and stalled. Started right back up and continued to jump and stall under a load like acceleration, even power brake or going up hill. I limped back home. It will sit and idle all day sounds fine but stalls if i try to punch it or take off. WTF????????

Really need some help on this one

Hey Gunny how did that rear leaf spring anchor work out for you? I just bought a set and the square u bolts that came with my lift kit are too narrow. Did you have the same problem?
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[hilljob26]

did it get rid of the security light as well

[Gunny Davis]

I ended up putting a cut off switch, under the dash, in line on the power wire, for the Instrument Cluster. I just shut it off if I park for more the overnight. Completely solved the battery drain problem.

[Gunny Davis]

Finaly got around to getting pics up of the Blazer after the 2" Add-A-Leaf front and rear.

[Gunny Davis]

Been driving back and forth to work and got some questions about Trans and shift points.

When I had the PCM done I asked that they allow for the 33" tires I am running.
The truck runs like a champ and shifts fine... I'm not sure the over drive is locking up; how can I tell this?
The RPM's seem to read very high on the stock instrument cluster but the engine doesn't sound like it is reving high at all??? Could there be an issue with the PCM flash.

[TchncnDen]

I already subscribed to your security light thread and I am having the same issue with the rpm's reading high. My guess is that the pcm was reprogrammed for a v8 signal when the stock output is four. That is just a guess though but going by ear the reading appears to be about double on mine, I also had lt1swap do my programming. Did you find out what this wire is, B5 Ppl/Wht 1382 LED dimming signal? My guess is high/low beam indicator but I haven't checked it out yet.

[Gunny Davis]

B5 Ppl/Wht 1382 LED dimming signal
Still no idea and left unconnected

Trans is acting funny and throwing TCC codes P0740 and 2-3 shift solenoid codes. Of course now I'm really regretting not having it rebuilt when I had the chance. I'm very concerned about the shifting cause its killing me at hwy speeds and gas milage.

[clinebarger]

Originally Posted by Gunny Davis

B5 Ppl/Wht 1382 LED dimming signal
Still no idea and left unconnected

Trans is acting funny and throwing TCC codes P0740 and 2-3 shift solenoid codes. Of course now I'm really regretting not having it rebuilt when I had the chance. I'm very concerned about the shifting cause its killing me at hwy speeds and gas milage.

Test the resistance of each solenoid in the transmission (chart).
Go to the wreaking yard & cut a trans harness off (pic of mine) Label the ends (diagram).

Plug your new test harness to the trans & test all the components & get back to me.

[TchncnDen]

I had a performance tune done on my pcm and the tach output was set at 8 cyl. I had him reset it to the factory 4 cyl and now my rpm's read correctly. I highly recommend the performance tune, wow!

[Jdubs71]

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[72MARIO]

hows that fuel pump set up working after all theses years ?

[twp1]

what did you do for headers? and can you send pictures?

[preciador6]

what crossmember for the transmission did you use?

[GMC-YA68]

guy hasn't logged in since 2013......