Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

On the alternator, if you eliminated the plug that went to it, that's probably the problem. I think it is the PCM that tells the alt when to charge, and when to shut off, kind of like the exciter (field) on the older alternators.

For the fuel, refresh my memory. Are you running an in-tank pump, or external?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Looks to me like you have plenty of ponies to the tires and tons of torque to play with! SWEET!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

running an external pump and as mention b4 the line the came from the evap canister will fit more better and tighter than the actual return line,, so I was thinking on clampin the return to it and the original return line just pluged it....and I dont recall eliminating the plugs from the pcm to alternartor but I thinks it was already cut from when I bought engine.. I found some info on how to make it work with out the pcm thought.... thanks.. let me know your opinion on the fuel line dilema....

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

That might just work. Is that evap line mostly steel with short rubber ends? If so, and if you end up cutting the steel to get it the right length, be sure to flare the end of it a little to prevent the hose from being pushed off the end by the psi.

That's good news on the alternator, hopefully you can get it to work! :metal:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

yes the evap line is steel and it has a T next to where I put my fuel pump... with short rubber hose as you said,... I am just gonna clamp it there,its flared.., will let you know how it turns out ....

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I don't know if it has the CS-130 alternator or a newer version but it is probably the same control circuit wiring.

The L terminal on the CS-130 alternator is connected through an idiot light on the dash. It needs that resistance to function.

You can connect it to the alt warning lamp wire that was on the old 12si alternator in your truck or run a CS-130 pigtail harness from GM that they have with a resistor in the L terminal connection.

You can also get a courtesy light circuit out of a donor car and connect it through that too. I did it this way on an old Jaguar that I put an LT1 / 4L60 into to get the alternator to work since it didn't have an alternator warning lamp circuit to use. I left it under hood as a diagnostic tool to know the alternator was working.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Are the 5.3 intake manifolds and the 6.0 manifolds the same? If so I've seen the guys over at tbssowners porting their intakes and getting 15-20rwhp. They were having it done by LSportworks. Here is a link.

http://www.tbssowners.com/forums/showthread.php?t=39770

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

68 tt,, thanks for the info... I been reading the schematics for the 80-87 trucks and I saw what you mentioned above,, the wire coming from the truck has the resistance built in .. so I am going to hook it to that and see if it works... thanks

bob sorry to keep hickjacking the thread... but not sorry about the total # of post in it..:metal:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

No problem man! More info for the masses!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Ok its been three weeks and your not done with the trailing arm conversion yet??

WTF? You did the LS swap in a day??? :D

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

LOL! Trailing arm conversion isn't in the budget until May at the earliest, still have brakes and A/C to finish up. :D

I don't need to buy much, but I will need to order some DOM tubing, threaded bungs, and a couple end links to build the panhard bar. I'll probably make a new TA cross member too, just 'cause.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Let me finish your statement for you there Bob.
"I'll probably make a new TA cross member too, just 'cause"...I can.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

^^^That's right!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

:haha: That's how I roll...... :D

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Umm Bob.....I think you've got something all up in your grill. :bling:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Hmmm, peanut butter. Thanks for the warning!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

:haha: Oh man I love this place!!!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Ok then, I guess. I'll be watching since it will take me longer than that to save up the $ for the CPP kit (or porterbuilts?). I do have my arms now though. :D

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Another temp sender option.

http://i49.photobucket.com/albums/f2...r/IMG_0070.jpg

http://i49.photobucket.com/albums/f2...r/IMG_0071.jpg

I am actually going to use an adapter I had made and try this and swap the wire between them to see if one works better? I believe the water pump will end up working better because that is where they put the thermostat, I believe the adapters will be prone to having air in them? And I don't feel comfortable drilling the head on the vehicle, and the 72 and earlier ones are 1/2 NPT as opposed to your 3/8 NPT which makes it even harder to drill the head.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Thealien, how will the Temp reading be on the pump? Wouldn't there be a variance between the w/p having coolant moving through it? Just my thoughts. I'm been looking at where my sender is gonna be too! Little scared like you to drill the head!:jdp:

Hope you get a good reading!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Where they are in the head their is coolant also, just reading it at a different place. If you can safely drill into the head it is probably a better location except as I stated my 72s senser is 1/2 NPT and I don't know if it will work if I drill in the same hole as the plug. I think I would have to make their 12mm hole the edge of mine adding to the difficulty. You guys with the 3/8 NPT senders have it a little easier. I do have an adapter made but I am not sure how well the coolant will get into the little hole of the adapter and will the flow keep it at the same temperature of the overall coolant? The only issue I see with putting it at the waterpump is will it restrict flow at all? I know a few others doing it this way with no problems. Hearing people say they have had the adapters leak, get broken I am looking for other options and thought I would share?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Shouldn't be any difference in drilling for the two sizes. The 3/8NPT will need a 19/32" bit (one bit above a 9/16") and the 1/2NPT will need a 23/32" bit (between an 11/16" and a 3/4" bit).

12mm is just under 1/2". Use some grease on the bit to hold the chips, and drill slow. There looks to be enough room for the larger sensor, maybe some possible interference with the manifold flange if anything:

http://chevythunder.com/LS1_coolant_sensor_loc.jpg

FWIW, my temp gauge reads almost exactly (well, as near as can be compared with the analog gauge :D) what the PCM sensor does via the scanner.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Hey Bob or anybody else that knows. I see that you are running a 3.42 rear end. Do we have to stick to the 73-87 years or can we use another year? For a total rear end swap. What models (K5 Blazer,Sub,LWB,SWB,etc.) were more common for this ratio?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I was feeling around inside after removing the plug and it felt like there was a bump or? that had me concerned. Just showing another option with the water pump, sorry if I am stepping on anyones toes? Just trying to help. I would rather mess up a water pump than a head?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I already had a 12mm taped hole on the P/S. It had a plug in it, I just removed the plug and used a 12mm to 1/8 reducer. Is this right?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Stepping on toes?? Never! More info is better info!!

It seems fairly common to drill the 12mm hole to 3/8NPT, I just figured you could go a little bigger for 1/2NPT. I don't think I could get my little finger in that 12mm hole! :lol: I'll have to poke around in there before I start drilling. A friend has one of those optical scopes that can get into restricted places, I'll have to see if I can borrow it and check it out in there.

79gmc5.3 - Do you have the sensor installed already? The temp sensor from the truck should be 3/8NPT, which is larger than 1/8.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

mannn mannn mannnn , I get in my truck to go for the first drive test after the new 5..3 power and I start the truck only to find out I didnt hook up the transmission linkage :lol::lol::lol: does one of you guys have a pic of how you guys connected it... thanks in advanced

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Same as it was connected to the TH350. Use the "U" shaped piece off of the old trans. I didn't have to move anything on the frame, and I only had to tap one of the bends of the linkage that ran from the frame to the trans to make it move smoothly through all the gears.

Then I spent some time adjusting the linkage that runs up to the column to be sure it read correctly in all gears. I have heard A LOT of swappers say that they cannot force the shifter into 1st, but I can. :confused:

Congrats on almost going for your first drive!! :metal:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Yes I have Dakota Digital Gauges they have there own oil pressure and temp sensors. They have a 12mm version but I already had the 1/8 so I just got the reducer. Did you just drill out the 12mm hole that was already there?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

thats where the problem comes into place,, I dont have the U shaped piece,, kind of gave it away with the old 305... I brain storming right now see if i can use something else. thanks

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Gotcha, cool! I am using an adapter that Mcbassin made for me. It's pretty much a duplicate of the S&P piece that I originally had. That one leaked at the head. This one is leaking between the adapter and sensor. So I'm just going to drill the 12mm hole in the head and install the sensor direct in the head.

Hit up some transmission shops and see if one of the techs might have one in a bottom tool box drawer. Especially look for some "off the main drag" old school shops. They probably have a box of them.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I have the piece you are needing. I will dig it out of my parts bin if you want it. Just send me your address and cover the postage and it's yours. Let me know, just glad to help a fellow board member. ;)

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

^^^ That's why I love this place!!!

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Awesome of you Josh! That is what the hobby is about, having friends that will help you out when they can. And this place is about making friends...all over the world even. :thumbs: up to you. And some imaginary rep points coming your way. ;)

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Man you guys stop, I'm getting all chocked up :whine:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Ooooh, I like imaginary rep points. It's just nice to be able to help people with their build just like others have helped me. I got the parts from Matchstick we talked about in my build and I couldn't be more thankful. I will send the entire shift linkage if needed. Just let me know. I bought a Lokar one for mine...:smoke:

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Very cool Place! Everyone is here to help, thats what I love about it!

BTW Thanks guys for talking about the sender placement. Answered the questions I had!

Justin

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

I tried those transmission shops and they couldnt help me ... but I call a local axle company and they had it


thanks for the offer man.. but I found it locally for 7 bucks and a 30 mile drive lol....
now the problem is that, we are getting some sleet and a few ,,, again A FEW snow flakes and this town is going crazy.... hasnt snow down here since the early 80;s and we are being told that we are getting a whole 1 to 2 inches.... once again thanks for the help guys... now where is that da*n heater at?

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

Glad you found what you needed. How about starting a thread and posting some pics of your truck.

Re: Glock's new project: "Fred" w/ 5.3L LS swap info
 

the thing is I only took about four maybe five pics.. sorry... how ever I did go for my first drive, it was extremely loud(open exhaust) for about 5 miles, so i could get my exhaust hooked up, the guys did a good job but one of my donut gasket on the driver side is bad and needs replacing, they didnt have one in stock so I am gonna have to go back later...the exhaust sound was a little dissappointment it used to sound good with the 305 but now its just too quite for my likes but it runs good, once again I cant say thank you enough you all been very helpful..... nearly drove from my friends tire& muffler shop with a set of 22" but they were just not what I wanted I want some 20" :devil:

also something weird happens every time I start the truck now... the wipers come on on their own... but only at start and once I turn them on and off they stay off :crazy: will check it later