1995 K2500 LQ4 swap
 

OK, so I have this rusty old 1995 GMC K2500, the engine is toast (headgaskets and overheated a few times, and sounds like it's knocking). I was going to sell it for parts at first, but I just got an amazing deal on a southern box that has me rethinking what I want to do with it. Here's the thing, I have an LQ4/NV4500 from a 2wd 2001 2500HD sitting in my garage. I already have other plans for the NV4500, but that leaves me with the LQ4. Immediately after I found this southern box it dawned on me "put the LQ4 in the K2500". I've never done an LS swap before, but I've been toying with the idea and doing some reading and it doesn't seem that bad. 96-98 fuel pump, corvette regulator/filter, reworked stock or painless harness, engine mounts, etc. My 95 doesn't have cruise control or A/C, and I don't need it. I'm assuming the 4L80E in my 95 will already work with the LQ4. My first question is, the flex plate and torque converter, will I need parts from a newer truck, will the parts from the 95 work, a combination of both, aftermarket, or is it all the same? Considering I have most of the major parts required in my garage already and have basically nothing into this so far, I don't mind spending a little on doing things correctly, so long as I won't need a 2nd mortgage to pay for it :haha: Here's the truck.

P.S. the engine is complete with accessories and I drove the truck it came from. I also have the original harness up to the firewall, the computer, factory fuel lines back about 3 feet, etc.

Re: 1995 K2500 LQ4 swap
 

It should be a really good combo and these trucks are well worth the effort of keeping them on the road. Looking forward to seeing your progress.

Re: 1995 K2500 LQ4 swap
 

I don't think the LQ4 factory computer will be able to control the 95 4L80e. You will be able to bolt them together though, they make a little spacer to connect LS engines to older transmissions.

Re: 1995 K2500 LQ4 swap
 

I did the LQ4 swap in my 90 SCSB. I used a Holley Terminator X Max for the computer (Throttle by cable) with the 4L80 trans controller. I know a factory computer is cheaper,but why put all that work into something and not use a new harness and computer. I used the stock intake and a different throttle body. I only had to change the fuel pump. The LQ4 uses a return fuel line so no regulator was needed. It was not extremely difficult. Just a lot of work. I bought a speed engineering oil pan (Pro Performance,Mesa AZ). Let me know if there is any other questions you have. I did mine a few years ago, so I might not remember everything.

Re: 1995 K2500 LQ4 swap
 

Did you get the chance to do the swap? Looks like the truck's in pretty good shape.