Jeremy Forsythe

That's where I'm at now. And cutting the long tube running from the back end. I put the 1/2" galv caps on the manifold deal for now. Got the whole air pump off and all the plumbing to the manifolds and plugged the tube running to the converter.
the 85" belt was too small for me though, I used one 1 1/2" longer and it works great.

Ahnenerbe

I just did this on my 84 and I am amazed at how easy this was, bought the Dayco belt and removed all the plumbing (which was the hardest part) and wow what a difference it makes in cleaning up the front of the engine. My car was converted to flowmaster dual exhaust and the air tube was just just laying on the pipes under the car.

wilcar

I removed my ac compressor later and used a dorman 34157 ac delete kit which is for 88-92 camaro and firebird. I used an 87.5" belt with factory pulleys.

Michael S

I just did this the other weekend. Works great!

http://forums.corvetteforum.com/c4-t...your-84-a.html

UserG

Can you just yank it all out and is it. Connected to converter im thinking of getting rid of cat no emissions or inspection in sc
also looking for vacuum and wiring diagram for my 84 corvette

UserG

Okay here we go
is it a great idea to remove air pump crap also
how and what do you need to do

Also I'm looking for vacuum and wiring diagram for 84corvette

pezter22

I kept the Air Pump, but gutted it. You can remove it, and use a shorter belt, but it looks kind of ugly with it missing because you still need the mount for the power steering reservoir and alternator.

With the Air Pump removed, I also removed the tubing to the exhaust manifolds. You can simply plug the tubing, but when I changed my head gaskets a few years ago, I had the tubes cut and welded shut.

I really don't think there is much of a performance gain, but I am really happy I can reach the spark plugs much easier after this mod was done.

Which wiring diagram are you looking for?

pezter22

Here's a vacuum pic for the '84.

Also if you really need this info, I'd look into buying a Factory Service Manual. Purchase the CD version on ebay. The Bishko one's are searchable and you can print out the pages you need. No sense getting a hard to find book dirty.

The CD also includes the Electrical Troubleshooting manual.

http://www.ebay.com/itm/1984-Chevrol...RWu9FH&vxp=mtr

c4xfire

My pump was sounding pretty rough for some time, the second actually, so I got a belt for a 95 Taurus as recommended and the fit was perfect. I was surprised that my ac pump was moving and found a broken bracket at the bottom, I'll need to address that eventually.

Vulcan73

This thread is still open after five years so here goes...is this 85" belt still a viable option in removing the air pump on an '84? I have an '84 as a backup to my '98 C5. The '84's air pump bearings are long gone and I'm not comfortable actually using the car in fear of total destruction of the pump.

If I understand this thread correctly, you can remove the air pump 'wheel' then replace the belt with a shorter 85" belt (Dayco 5060850) without obstruction(s). Like one poster said, Thanks in advance...

edit: I popped the hood, released the tensioner and routed the belt under the air pump wheel and tensioner to see if it cleared the water pump and it does but what provides tension on an 85" belt? Do you loosen and tighten up on the alternator and/or air conditioner compressor and use that to provide the tension? That's the way it was done years ago before spring loaded tensioners were used.

MikeP84

Tensioner pulley should/can still be use after removing air pump and provides tension on belt. Just run belt around alternator, under tensioner pulley, and around A/C pump. If tensioner pulley is to low and causes belt to rub water pump pulley, then you need a shorter belt. If you would like a picture of what it should look like, I can post one but it will have to wait until tonight.

Vulcan73

Thanks for reply Mike...yes, I would like to see the final set up. With my tensioner fully released, I stretched the existing belt from the alternator to the A/C compressor simulating the run of an 85" belt and it never touched the tensioner.

MikeP84

Found my photo on another post. I cant recall if I used an 85" belt or not but regardless of belt length it worked and worked well.

zachaeous

The 85" belt is what I used on my 84. I have been running it with no problems since 2012.

In the above picture someone put the 85 and later L-98 P/S reservoir on this 84. I left my 84 original P/S reservoir on mine.

MikeP84

That's correct, I am using an 86 style P/S reservoir but not needed for air pump removal. I am using newer reservoir bc I have completely removed original reservoir bracket and have converted to newer intake and needed the room for air filter.

Vulcan73

Mike...thanks again...can't argue with that. I now see what I did wrong with my simulating the 85" belt. I should have removed the air pump wheel which apparently pushed the belt under the tensioner wheel. Tomorrow's project is to remove that wheel then re-do the simulation.

By the way, this car has been garaged and mostly idle for the past 18 years. I occasionally take it out to ensure it works or as a backup when my '98 C5 is laid up for maintenance. I know the '84's aren't highly regarded by the Corvette purist but this thing will blow the socks off my '98 in a 1/4 mile.

MikeP84

Yep no problem! A picture is worth a thousand words!

Wow long time! Even though I have modernized my 84s intake system with a pro flo xt, I loved the low end torque you got from them! I was able to give a friend who has a 2015 5.0 a run for his money from light to light.

Vulcan73

Yeah, I bought the car in 1997 for my wife when she was recovering from chemo. I thought it would help her spirits which it did. She was able to drive it for a couple of years but her health deteriorated to the point of not being able to drive. When she passed in 2001, my daughter (19 at that time), gave me orders not to sell her mom's Corvette so it's been sitting mostly unused since 1999-2000.

Yep, these '84s definitely have some git up and go!

blackbear10

Yes you can. I took my pump off completely and used the equvilant of that belt.

MikeP84

That is unfortunate what your family had to go threw. Luckily they dont cost much just sitting around