ok so ive been running my 3rd gen a/c on my ls1 and it just looks gay having a top mounted compressor so i want to convert to the ls1 compressor, condensor, and dryer. now i can get these 4th gen parts cheap so not a problem there. i know from the compressor a line goes to the condensor and from the condensor to the dryer? but makeing a 4th gen dryer bolt up to the a/c unit on the firewall takes a special hose? like one made from a custome hose shop?

so just write me out a list of what i need and i think i can take it from there

 

can't help on the advise but when you do the swap would you be interested in selling the brackets? I'm doing an LS motor as well and want to keep my a/c. No other accessories will be used(doing rack steering) and the alternator will be low mounted. Just gotta keep the cold air for those "street driven" days.

 

Hey man...just another option. It was a good amount of work, but turned out great. Instead of making the 4th gen A/C stuff work with my 3rd gen...I used all of the 4th gen stuff. All I had to do was modify the EVAP box on the firewall to acept the 4th gen evap. Here is a thread with some pictures and info...and if you decide you want to try this and have questions, let me know.

It is a good bit of work, as opposed to just getting new hoses to work with the 3rd gen stuff. And I had everything I needed from a donor car sitting right next to my 87...so that kind of pushed me into this direction.

Just another option for ya......comes out pretty clean when done.

thirdgen.org/techboard/ltx-lsx/388219-update-pics-my-ls1.html

For some reason when I copy a link into a thread, it works for a minute, then it gets screwed up and when you click it it doesnt work. So copy and paste the link...

Justin

 

thanks justin.

and yes i would be more then willing to sell my conversion mounts. pm me to work out a deal.

 

I used the LS1 compressor and most of the LS1 lines. I cut and welded on about an inch of the third gen line where it goes into the condenser. I cut and welded about 12" of the third gen line where it connects to the filter/drier. You wouldn't know it wasn't stock if I didnt point out where I welded them.

If you cant weld aluminum it took me all of five minutes so mark yours and take em to a local welding shop and I bet you a case of beer covers it. Good luck.

 

Now that is a good solution... Sounds like that would be cheaper and easier than trying to build new lines or get lines built for it. Good suggestion.

J.

 

pics??

 

I dont have any real good pics of the lines on their own but this is a cropped out engine bay shot that I have from my appraisal and you can kinda see it. The other line is literally just one inch of line and the fitting from the third gen welded onto the LS1 line. I think I cut about four inches and a bend off the LS1 line there. I'll take some more pics of the entire project soon so if you want more just ask.

 

I'd like more pics of the a/c system if you have them. Also, if you have any of you're coil mounting for the rear of the pass side that might help too.

 

I used the stock LS1 coils and mounts. I made a small notch in my heater box with a zip cut and bent a piece of sheet aluminum to cover it. Riveted it in place with silicone then painted the whole thing black. So much gack in the way you cant see it so no pic sorry. It was soooo close I might have been able to get away without notching it but I did it anyways. Heres a couple more pics of the ac lines.

 

So heres one last pic showing the routing of the lines. I have some nice factory clips that go into the fan shroud bolts that held the stock A/C lines beauty **** but i cant find them hence the foam tape and ty-wrap solution there. I highlighted the lines as it was difficult to see what was what so much gack in that spot. Its tight in that corner but nothing rubs and from the top it looks great.

 

Another help full thread. Suscribing for future use.

 

we got the ls compressor working with the factory other stuff just ordered an adapter block from doc's blocks and had some hoses made at a local a/c repair shop