Another LSx/4L60e Swap

[glock35ipsc]

It would allow the 5.3L compressor to fit, but at the expense of not being able to re-use the stock driveshaft (i would have to be shortened), and the need to move the shift linkage frame bracket.

[fpjr0]

Originally Posted by glock35ipsc

It would allow the 5.3L compressor to fit, but at the expense of not being able to re-use the stock driveshaft (i would have to be shortened), and the need to move the shift linkage frame bracket.

thats probably what I have to do,, since I have a welder to "fred" mod the stand as you guys showed,, but since my time off is limited, It will be easier I guess,,, still thinking about it... thanks for the info,, you guys are great....
how can you guys tell the transmission you have,,, I saw somewhere that
the some have the "4l60e" staped on the.. but my have nothing but a # 58 also has the GMPP staped on it.. came from a state trooper tahoe? any one..?

[soule64]

Sorry, I can't find any pics of the truck itself. There's not really much to see because it's pretty much blown apart to get to the frame. Can't wait to show off the power "Dallas Cowboy" edition power doors.

[menace121978]

if i'm not mistaken, the 60's and 65's have a round cap with a clip on the passenger side where the shift servos are. someone please correct me if im wrong.

[glock35ipsc]

I would correct you.....








but you are right!

[menace121978]

got 1 right!!

[fpjr0]

thanks... It does have the round clip.. so I guess a 60 it is.... thank you.....

[atopper]

awesome build !! lots of good info . subscribing

[soule64]

The truck had the usual rust areas, so I welded in pillars, kick panels, cab corners, outer floors and rocker panels on each side.

[soule64]

The original harness was shot, so I replaced it with a Painless direct-fit. Many of the circuits aren't going to be used, so I have them tied uo for now. Also mounted the engine harness fuse block in the same area.

[soule64]

I found a '91 Blazer cluster with electronic speedometer and got it tied into the chasis harness. All of the guages and lights work (not sure about the speedometer because I haven't tested it). I tapped the t-fitting near the oil filter and mounted a sender. Works great!

[79gmc5.3]

Originally Posted by soule64

I found a '91 Blazer cluster with electronic speedometer and got it tied into the chasis harness. All of the guages and lights work (not sure about the speedometer because I haven't tested it). I tapped the t-fitting near the oil filter and mounted a sender. Works great!

That T-fitting, is that where my oil cooler lines are? If so do I change that to this T-fitting or tap the oil cooler lines block?

[glock35ipsc]

Street and Performance sells that bypass block, their are fairly reasonable on the price too (surprise surprise!!). I bet you could get a part number from a dealer too, then check at gmpartsdirect.com to see if they are cheaper.

[menace121978]

Josh i just seen your sig!!

btw, i need one of those oil sender t's also.

[Chevyman350]

I just though I would post an FYI that the "electronic" speedos actually still need a cable drive from the transmission and the speedo it self has a signal generator for the computer (engine only during these years).

I hope that this saves you some time.

Just look at the back of the speedo yand you will see the cable fitting.

[glock35ipsc]

Originally Posted by Chevyman350

I just though I would post an FYI that the "electronic" speedos actually still need a cable drive from the transmission and the speedo it self has a signal generator for the computer (engine only during these years).

I hope that this saves you some time.

Ummm sorry, but you are wrong.

The electric speedo we use for these swaps come from a 90-91 Blazer, Suburban or dually. They are true electric speedometers, and only require the one signal output from the PCM ran to the cluster. You must re-pin the cluster connector, but there is NO speedo cable.

Just look at the back of the speedo yand you will see the cable fitting.

Look at the back of my cluster and you will see no cable fitting



Edit - Corrected the date.

[joe231]

Originally Posted by glock35ipsc

Ummm sorry, but you are wrong.

The electric speedo we use for these swaps come from a 89-91 Blazer, Suburban or dually. They are true electric speedometers, and only require the one signal output from the PCM ran to the cluster. You must re-pin the cluster connector, but there is NO speedo cable.

I believe that is a 90-91 cluster.
I have a 1989 sub that i'm parting and it has a speedo cable with an optical sensor for the computer.....I will look and see what the exact date is on the sub, maybe it was a mid year change?

[Jonboy]

Originally Posted by joe231

I believe that is a 90-91 cluster.
I have a 1989 sub that i'm parting and it has a speedo cable with an optical sensor for the computer.....I will look and see what the exact date is on the sub, maybe it was a mid year change?

The optical sensor should be the same one they used for years. It reads the pulses and buffers the signal for the VSS. There are two black marks on the back of the speedometer head, and that breaks the light reflection and counts as a pulse. IIRC, it is 1000 revoultions per mile x 2 pulses per revoultion = 2000PPM. The 90-91 electronic cluseters function with 4000 PPM.

[Thealien]

This is another oil pressure sender option I posted in the other thread.

Some people remove the oil pressure sending unit from the back of the engine and use a 16mm X 1.5 to 1/8NPT adapter and use that for their oil pressure line/sender. The PCM doesn't need the oil pressure sender (from what everyone tells me). I am having a T made for that location so I can have both (I believe a scanner, Tuner and things like an aeroforce gauge can read the stock sender)


This is the adapter fitting


Aeroforce gauge

[glock35ipsc]

I left the 5.3's sending unit in it's original location, and drilled and tapped the bypass block and put the sender there. Why? Hell, I don't know. Cause it was funner to drill and tap something I guess?

[glock35ipsc]

Originally Posted by joe231

I believe that is a 90-91 cluster.
I have a 1989 sub that i'm parting and it has a speedo cable with an optical sensor for the computer.....I will look and see what the exact date is on the sub, maybe it was a mid year change?

DOH!!! I still have GMC grills on my mind!! Yep, 90-91 clusters. I fixed my post.

[STOCKISH]

Originally Posted by glock35ipsc

I left the 5.3's sending unit in it's original location, and drilled and tapped the bypass block and put the sender there. Why? Hell, I don't know. Cause it was funner to drill and tap something I guess?

May be a dumb question, but couldnt you have used the F-body (2002) sender and your factory wiring or was the location of the 5.3s sender an issue?

[Chevyman350]

Quote:
Originally Posted by Chevyman350
I just though I would post an FYI that the "electronic" speedos actually still need a cable drive from the transmission and the speedo it self has a signal generator for the computer (engine only during these years).

I hope that this saves you some time.


Ummm sorry, but you are wrong.

The electric speedo we use for these swaps come from a 90-91 Blazer, Suburban or dually. They are true electric speedometers, and only require the one signal output from the PCM ran to the cluster. You must re-pin the cluster connector, but there is NO speedo cable.


Quote:
Just look at the back of the speedo yand you will see the cable fitting.

Look at the back of my cluster and you will see no cable fitting



Edit - Corrected the date.

Well you learn something new every day!

[glock35ipsc]

Originally Posted by Chevyman350

Well you learn something new every day!

Around here, that is a guarantee!! Looked like a came off a little harsh there at the beginning of my post, sorry 'bout that! Wasn't intended that way.

[glock35ipsc]

soule64 - Is that a tach in the bottom left hole in your cluster? If so, what kind is it? Things are looking good!