Putting a/c back in my 85 Mustang - 351w

[ddx77]

Am I correct in saying that the 351 block that is in my Mustang is the same as a 302 block?

The car came with a/c originally, but it was removed when the 351 was installed. I am wondering if I buy an a/c compressor bracket and a power steering bracket to mount in the lower position, will be it that simple. Obviously I will have to by evaporator, compressor and condenser and such but the brackets are my main concern for now.

Thanks

[Ttopcapri]

351 block is taller than the 302. I'm pretty sure one of the brackets involved has to bolt to a water pump stud on one end and the compressor on the other end which will be a larger distance on the 351. Hopefully someone can either suggest something else that will work or prove me wrong.

[ddx77]

351 block is taller than the 302. I'm pretty sure one of the brackets involved has to bolt to a water pump stud on one end and the compressor on the other end which will be a larger distance on the 351. Hopefully someone can either suggest something else that will work or prove me wrong.

Thank you. I appreciate the info.

That info helped, LMR makes the bracket I need. Can't use the stock one. Thanks


Sent from my iPad using Tapatalk

[wraithracing]

The large A/C bracket is all you need to make the swap. All the other parts are the stock 5.0 A/C brackets etc.

https://lmr.com/item/M8511B351/85-93...racket-With-AC

Not sure if that is the FRPP, but that is who originally made it.

[ddx77]

Perfect, thank you!

I'm guessing that's going to be the easiest part of the install.

The large A/C bracket is all you need to make the swap. All the other parts are the stock 5.0 A/C brackets etc.

https://lmr.com/item/M8511B351/85-93...racket-With-AC

Not sure if that is the FRPP, but that is who originally made it.

[ddx77]

Is there more than just the a/c compressor wiring harness under the hood of an 85 GT that's factory equipped with a/c. I am thinking about buying this from LMR https://lmr.com/item/LRS-19703A-K/mu...rsion-8385-50l but they don't mention anything about the wiring. Thanks

[84StangSVT]

On my 84, there was a bunch of wiring that went to the A/C system that I deleted since mine is factory non A/C. On the D/S side of the engine bay, you have the compressor wiring, throttle cutout and associated wiring. On the P/S you have some pressure switches. Under the dash you have the relays and HVAC control wiring.

I know it's not really descriptive, but there is a fair amount of wiring that controls this system.

[ddx77]

Thank you for the reply.

I didn't realize there was so much under the hood.


Sent from my iPhone using Tapatalk

[gt4494]

If you want to simplify I have seen people delete the cut off switch on the throttle and / or just use a micro switch wired to the AC clutch. Doing that you only need the clutch wire and the low pressure switch under the hood.

[ddx77]

That's an answer I was hoping or looking for.

Thank you!

If you want to simplify I have seen people delete the cut off switch on the throttle and / or just use a micro switch wired to the AC clutch. Doing that you only need the clutch wire and the low pressure switch under the hood.

Sent from my iPhone using Tapatalk