1968 C10 5.3 swap, the easy way.

[vannatta20]

My fuel tank is a hot mess. I tried a LS1 camaro fuel tank and that did not fit at all underneath my bed. The tank is now im my bed tool box... Going to get a custom tank and house the LS1 fuel pump assembly.

[encasedmetal]

Originally Posted by vannatta20

My fuel tank is a hot mess. I tried a LS1 camaro fuel tank and that did not fit at all underneath my bed. The tank is now im my bed tool box... Going to get a custom tank and house the LS1 fuel pump assembly.

what was the issue? - I've seen pics of people using them and want to use one with my 63' if at all possible.

[vannatta20]

Originally Posted by encasedmetal

what was the issue? - I've seen pics of people using them and want to use one with my 63' if at all possible.

A LS1 tank will not fit between the frame rails unless you hack it up the frame up. Not worth it at all in my opinion. Also its not a flat tank on the bottom and will hang down.

[Xenofilus]

Nice Info, thanks for sharing! I'll try this soon!
_______________________________________
Cheers, https://mechanicguides.com/best-dies...r-6-7-cummins/

[faribran]

thanks for the link for the gauges..... how did u go about hooking up the speedo?

[vannatta20]

Wire it directly off the VSS signal from the engines fuse box.

[502ms]

As for wiring, what really needs to be done? I just rewired my truck with painless harnesses, would like for this to be as simple as plugging in where the other one left off
Posted via Mobile Device

[vannatta20]

I kept the old factory wiring in place. Once you feed the main hot wire off the new style fuse box it all works the same as before. There are only like two main feed wires. One for headlights and one for your fuse box.

[vannatta20]

Dash completed and installing a/c using the factory compresser today. Hopefully it cools This cost me around 400$

[NateZQ8]

So you just used the factory Silverado under hood harness and just cut the crap you didnt use off? Thats a brilliant way to save $450 on a custom stand alone harness. What did you do about the VATS in the computer?

[vannatta20]

I left the original wiring under the hood alone and just added the engine harness wiring that came with junyard engine. Its all plug and play. The downside is you have to use the factory fuse box for the LS engine which is bulky and ugly but who cares if its just a daily driver. I am using the factory a/c compressor that came with the engine and hopefully by Monday it will be blowing cold air. Have less than 300$ in the a/c system.

[bryce1010]

Originally Posted by vannatta20

I left the original wiring under the hood alone and just added the engine harness wiring that came with junyard engine. Its all plug and play. The downside is you have to use the factory fuse box for the LS engine which is bulky and ugly but who cares if its just a daily driver. I am using the factory a/c compressor that came with the engine and hopefully by Monday it will be blowing cold air. Have less than 300$ in the a/c system.

I just found your post. I have a 1971 c10 and thinking about doing the conversion . I can get the engine and transmission and all acc. and harness and computer . all i would need to do is give the fuse box from the donar engine 12v and everything should work. Ware are the speedo and tach taken from?

[vannatta20]

Originally Posted by bryce1010

I just found your post. I have a 1971 c10 and thinking about doing the conversion . I can get the engine and transmission and all acc. and harness and computer . all i would need to do is give the fuse box from the donar engine 12v and everything should work. Ware are the speedo and tach taken from?

Just delete vats first and it should run. I used autometer gauges.

[bryce1010]

Originally Posted by vannatta20

Just delete vats first and it should run. I used autometer gauges.

How did you delete the vats

[vannatta20]

Originally Posted by bryce1010

How did you delete the vats

I did it myself using Hptuners. It cost over 500$ for it. You can have a local tuner reprogram it for you for around 100$ If you cant find anyone you can mail the PCM to me to reprogram it. PM if you are interested in that.

[vannatta20]

Update to the update. I now have in dash vintage air. Its the compac II system. The previous underdash set up blows it out of the water!!! The vintage air just doesnt have the volume of air. It still cools but needs to be one high. At least I have heat. But.... the vintage air controls are bad and I need to send it back. Not to happy with vintage air.

Update on the A/C. It works!! Blows Ice cold. I used the factory 5.3 a/c compressor hooked to a cheap underdash a/c unit. The unit pushes a lot of air and cools the cab very quickly. I got my a/c working in a non a/c truck for about 480$ I did have to remove my heater so thats a negative but later on when I can afford a indash unit I will install that. Happy driving with the windows up in high 90's heat.

http://www.nostalgicairparts.com/air...ounted-340.php 150$
Custom a/c lines made locally 160$.
Underdash a/c unit- Got it used from a friend for 40$ Its a cheap unit from mexico.
A/c Evap and Charge 90$
4 port Bulkhead 40$ Off ebay.

Heres what I had http://www.ebay.com/itm/290750368557...84.m1423.l2649 It works awesome and is cheap. Just no heat.

[Daaaanz67]

Can you post any pictures on how you connected to the compressor and what fittings were used thanks also did you use r12 or 134
Posted via Mobile Device

[OneOffStroker]

Originally Posted by Daaaanz67

Can you post any pictures on how you connected to the compressor and what fittings were used thanks also did you use r12 or 134
Posted via Mobile Device

I'm a little stuck on this myself. Doc's Blocks does not make 5.3 adapters anymore, and apparently neither does anyone else. Did you cut up some factory 5.3 lines and add new ends to them?

[Kainedogg]

Awesome build brother. Wish you had more pics. I will be pulling the motor out of my '84 C10 for the LQ4 swap. You are my motivation.

http://www.performancetrucks.net/for...didate-501987/

[vannatta20]

Ill post pics later tonight of the compressor lines. its really easy. I used the 5.3 factory compressor lines and they just adapted fittiings to it for the rubber a/c hose. I do a vid as well, just been busy with work and family. The a/c works so much better than the 2005 mustang I drive! Small cab and power underdash system works great.

[502ms]

Thanks so much!
Posted via Mobile Device

[vannatta20]

[vannatta20]

[bryce1010]

How did you do the wiring on the compressor . Got a vintage air system going to start install

[vannatta20]

Originally Posted by bryce1010

How did you do the wiring on the compressor . Got a vintage air system going to start install

I just followed the vintage air instructions. Your just using a different compressor but the wiring is the same.