hawksthirdgen

Just wanted to drop a line and let you guys know we just got in our A/C line kits for 3rd Gen LS conversions. This will allow you to connect your LS1 A/C Compressor to your 3rd Gen Condenser. Here is a link to it...
http://www.hawksthirdgenparts.com/ls...passkit-1.aspx

Thanks, Steven
Hawks

five7kid

iTrader: (14)

Must be why I haven't done anything with mine yet. . .

I assume it uses the 3rd gen receiver/dryer.

Which pressure switch does it use? I don't see a place for the LS1 switch.

hawksthirdgen

Yes it does use the 3rd Gen receiver and dryer...

You will have to use the preasure switch that is on the 3rd Gen dryer, but on the high side which is the small metal line you will hvae to use the 4th Gen switch which is a 3 wire connector.

Thanks, Steven
Hawks

hawksthirdgen

Here are some pictures installed...

Klortho

Any chance this would work on the LT1 swaps? I know alot of people that have the LT1 swaps would love this.

hawksthirdgen

This kit wont work, different setup, is there a demand for these? How bout this, if I can get 10 orders for the LT1 A/C Line kit I will sell them for $125 each instead of $149. Let me know...

cam-

Nice. Almost identical to what I made up save for I used 4th gen engine side and third gen chassis side and welded them together. This makes it a hella lot easier for future swappers and even though I have all the tools to do what i did, scrounging for used 4th gen ac lines was a pita and I would have jumped all over these if I had the option.

Jaysz28

iTrader: (30)

Definitely a nice option to have.....

I prolly would've kept my ls ac setup if this was available.... definitely cheaper than the brackets I bought

-jason

midnit

Why would you have to use the 4th gen switch? What will this be wired to?

Have you verified this will work when using stock f-body manifolds? I would like to use them but what if they don't fit...

On another note, what supercharger is that? LM Speed?

Klortho

4th gen switch is wired to the PCM since it controls the A/C

Klortho

There are quite a few people who have LT1's that are looking for a valid hookup.

Myself, I have to do something different since I have a 4th gen condensor in my car.

five7kid

iTrader: (14)

Okay, I'm still confused (not that hard to do).

Your picture shows the 3rd gen switch connector hanging loose. And, I still don't see the LS1 switch or where it would go.

midnit

I am not positive, but I read one place that said it could screw on the schrader valve?

midnit

Granted you could do that, but from my understanding if you provide +12v to the wire which tells the PCM that the compressor is on the PCM will do its job of turning on fans and managing idle. Of course this means it can't turn the compressor off but avoids using another pressure sensor.

I have not tested this myself but will be shortly.

ghettocruiser

iTrader: (4)

Im thinking you could eliminate all of the 3rd gen switches all together. I mean...thats how Im running my a/c set up, except I used all stock LS1 hoses and parts.

Wiring is SOOOO simple compared to the 3rd gen set up with hi and low pressure switches. Since the PCM tells the a/c compressor what to do, you really only have to wire the PCM a/c request wire to the wire from your stock HVAC controls that would normally trigger the 3rd gen a/c. The PCM handles the rest...cycling, fans, idle....everything. Basically if I want to disable my a/c, I just disconnected one wire up by the HVAC box. The "trigger wire" from the 3rd gen wiring is the wire that comes into the low pressure switch I believe.

The HVAC wiring in our cars is self contained so its easy to work with. And the LS1 harness contains the A/C wires already. Its a cake walk from there. Only hiccup there could be if the hard parts (drier/evap/condenser) function differently on the 3rd gen...then maybe you'd need the low pressure switch. But I dont think you will.

On a side note...I kinda wish these lines were around back when I did mine. I probably would have avoided building my own HVAC box and going through all that mess.

J.

ghettocruiser

iTrader: (4)

He doesnt have any of the low pressure switches screwed into the drier...but he's saying you'd put the thirdgen low pressure switch in the stock location....rear side of the drier.

The 4th gen switch can be seen in the picture. Look down sorta next to the headers. Its screwed into that hard line that snakes up the chassis rail and comes up to the evap. Its just the switch a plug..wires are cut.

The black cap on the front of the drier is the low pressure connection, and the cap on the hardline is the high pressure connection.

J.

Klortho

I'm not sure about that but I'm going to be running a set of lines I'm having made going to the 3rd gen dryer but using a 4th gen condensor and I'll have the 4th gen switch in the correct line so I can hook it to the PCM.

TPI TERR

iTrader: (9)

so you use the 3rd gen condenser.. wut accumulator would you use ? and is there any way to use the 4th gen hvac controls?

midnit

This will NOT work if you use the stock f-body exhaust manifolds. Please properly describe the item on your website so others aren't misled.

Ramair21

iTrader: (3)

AHHHH CRAP!!! Sucks living in cali!!

hawksthirdgen

I just updated the website... sucks they won't work with factory manifolds

hawksthirdgen

You will use the 3rd Gen accumulator, if you want to use the 4th Gen HVAC you will have to use a 4th Gen A/C box and you might as well put a 4th Gen dash in it like this... See Attached

This is a work in progress, he had to cut the firewall as well to get it to fit good, it was cool though the dash bolted right up. Haha...

hawksthirdgen

... It is a Magnuson TVS 1900 blower

five7kid

iTrader: (14)

Okay, I see the 4th gen switch now. But, that line doesn't look like my 3rd gen line, and doesn't look like the line in the kit. So, I still don't have a place to mount the 4th gen pressure switch.

From what I've been able to gather, the 3rd gen A/C control is wired directly to the PCM "A/C Request" wire. The LS1 harness does the rest (assuming the LS1 switch is mounted in the line and wired properly in the LS1 harness).

hawksthirdgen

Some 3rd Gen's did not have a preasure switch, you will have to use one from a 3rd gen that does have it.

ghettocruiser

iTrader: (4)

Its not the only way to run full 4th gen a/c...and in my opinion not the easiest ....unless you are already doing the dash swap, then there is def a good reason to try to fit the whole box.







However...if your lines were available, I probably would have gone with them instead of what I did.

I actually gave thought to cutting my firewall and working in the 4th gen HVAC box. Just didnt want to do that much cutting on the firewall.

J.

midnit

Thanks!

I am working on a compressor block/hoses that will work with the factory manifolds. Do you know the threads need to connect to the dryer and the condensor? I have the originals here but I don't know the threads and sizes.

Bradlyj8Z28

iTrader: (2)

I also used my third gen chassis side, and my LS1 compressor. With my Speartech wiring harness my ac is controlled with the stock HVAC controls. I welded the 3rd gen fittings on the 4th gen lines to hook it up. I have heard the lines are backwards on the condensor itself, 3rd gen versus 4th gen. Does anyone know anything about that? I dont want mine to crap out on me.

cowansauto

iTrader: (2)

Anybody else find that these AC hoses were too long?

GMan 3MT

iTrader: (4)

Anyone else have reviews on these lines? I've found plenty of threads where people suggest to use these, or they get a custom set made, but haven't found any that actually used these by Hawks? Are they on the long side?

I was originally going the custom hose route with a compressor block from acsourse, but am not happy with the fitment (interferes with the mounting bolt) nor the quality. Hawks looks like it's close, but I assume there's enough threads to get the fitting on.

Jaysz28

iTrader: (30)

My Hawks kit fit the same as the pic above. I had to remove that bolt to thread the hose on......

GMan 3MT

iTrader: (4)

Hmm. Thanks.

Requiring removing the bolt kinda defeats the purpose for both Hawk's and the one from acsourse. Since the Hawk one is (now) a machined piece, I'd imagine they could extend the neck another 1/2" or so, or rotate them 15*

QwkTrip

iTrader: (22)

Yes, the hose that goes to the drier is much too long.

Spaceboy1980

iTrader: (6)

I had my third gen lines welded to the fourth gen lines. It's a bear to get install, but it works fine.

I just marked and cut the lines where I need them and also made marks so they would be clocked properly when welded.