81 F100 flare side custom with 300 six & T18

Dave - In looking at the water pump pulley listings for 300 sixes with A/C I see three of them, and they are all very close in size.  I wonder if you can use one of the other two - if you can find it.

FuzzFace2 wrote

...if any one knows where to get a 3 groove water pump pulley for a 300 motor that has factory AC please let me know I need 1 badly.
Dave ----

Dave, a couple months back I was at the Kingman junkyard and found one and bought it as a rainy day spare or to help out a friend... I will send you an email

Gary, the number stamped on the pulley I have does not jive with any of the AC application part numbers. It was removed from a 1980 F150 with factory AC, and my 81 has the same pulley. I don’t have a belt on the outer groove, but it lined up with the York and appears to line up with the newer compressor pulley just fine.

Jonathan - I cross-referenced that ID #, D7TE 8509-CA, to part number D7TZ 8509-C using the books Bill/Numberdummy gave me.  Then I looked that # up in the 1973-79 MPC and found this:

Jonathan, thank you for helping me on the pulley and all the other things you have over the years.
When I told the wife I ran into a problem she is like NO MORE MONEY!

That pulley is just what is needed to get the belt on the AC compressor.
Speaking of the belt and it just hit me, the belt I ordered was for my truck using the York pump and it would not fit even with the small dia. groove on the water pump pulley.
I need to check for a belt on say 85 truck as it would be using the same compressor that I am now.

I also saw the number on the pulley and when thru Gary's list and did not see it and was like WHAT?
Well we see it was a carry over. I was wondering if the older trucks would have the water pump pulley I needed when I put a WTB add up.

Again thank you guys for the help
Dave ----

Glad to be able to help Dave, and glad that my impulse buying does some good once in a while ha ha. I think that a compressor belt for a 83-86 straight six 300 should fit. That’s what I ordered along with new hoses and a new dryer. That was two summers ago and I still haven’t rented the vacuum and finished the job! It’s shameful, but I really have not had the time to learn my way through the process and get it done.

Ford F834 wrote

Glad to be able to help Dave, and glad that my impulse buying does some good once in a while ha ha. I think that a compressor belt for a 83-86 straight six 300 should fit. That’s what I ordered along with new hoses and a new dryer. That was two summers ago and I still haven’t rented the vacuum and finished the job! It’s shameful, but I really have not had the time to learn my way through the process and get it done.

Keep impulse buying it not all the bad
I don't know why I get a belt for my 81 and not the 83-86 trucks? I have not checked on line if the belts are different but I am sure they are.

I have not done this part on an auto, steam chillers are a whole different ball game. I did have to run a vacuum pump on the 2 chillers at the start up of cooling season.
I picked up the PSI switch on the way home from work today and think I will stop and pick up a set of gauges tomorrow. My son said he has a set here somewhere but I don't remember seeing them around.
The new dryer should be here tomorrow and I will get a belt that I hope will fit.
I really want to try and get a vacuum on my system and check for leaks over the weekend.

Thanks again for your help
Dave ----

Dave, spent some time skimming through your build buddy! It is a great thread and very informative, thank you! You've taken that truck so far and it looks great.

BTW, am I seeing some AMC stuff in your shop? Thought I saw a Gremlin and perhaps a Javelin in a couple pics.  

Machspeed wrote

Dave, spent some time skimming through your build buddy! It is a great thread and very informative, thank you! You've taken that truck so far and it looks great.

BTW, am I seeing some AMC stuff in your shop? Thought I saw a Gremlin and perhaps a Javelin in a couple pics.

Thanks on the truck. It was just to be a truck to make weekly trash run to the dump but when I went to patch some holes that had patches already I had to start from scratch and snowed balled from there.

Yes you do see some AMC stuff. I have 2 - 1970 Javelins: 1 a 1/4 mile drag car I built in a small 1 car garage back in CT. Have not raced it for too many years and would need to go thru everything before hitting the track again. Car has a 360 / TH400 from a Jeep 4.56 Detroit locker out back.

The other is my street car project. I was trying to get it on the road for my 50th b,day and that did not happen 10 years ago. Under hood has been done, dash restored with custom gauges that look factory stock, and silver carbon fiber over lay that also looks factory till you look close. Body work is done on the nose and both doors. Working on flush mounting the front & rear glass then do body work to the roof & from the doors on back. The car has a 360 and T5 5sp, was a 390 / 4sp car from the factory.

I also have a 1975 factory v8/auto Gremlin that is mostly stock. I have a Holley 500 cfm v2 carb, shift kit in the trans and a lock right locker in the rear. I was drag racing it & driving it on the street before the drag car was done. The New England winters has done the body in and if I come across another small body AMC I will swap all the v8 parts over to it.

Yea I was into the ACM's pretty big before this pick up truck LOL
Dave ----

Little up date:
I got the right water pump pulley and get it installed, it was 1" smaller dia. then the one I removed.
The belt I thought was to small (117585) was for the 84-86 trucks and even with the smaller WP pulley was still to small had to go a little bigger (17600).

I picked up a gauge set & vacuum pump from HF. I did the pump only because I got thinking the loner most likely went thru hell so went new.

Today we pulled a vacuum and after some sweating of a leak, did not have valve open all the way and a hose leak, it held 28 HG for and hour+ then pulled more vacuum as I did something else.

I had to wire the pump clutch and run a ground from it. I used a weather pack plug because of it sitting on the from of the motor. But mow that I think of it I could have used butt connectors as the pump has a plug on it oh well.

I added 2.5 12oz cans of 134a and it blows cool but not cold. Gauge low side was about 45 psi / 50 134a, could not hook up the high side.
Few people say it needs more gas get it up to about 60 so need to get another can of 134a and see if that helps.

I also need to find and install a check valve between the vacuum can on the fender well and supply because when ever I give it gas the vent door moves from AC to defrost.
Dave ----

I'll beat Jim to it - PROGRESS IS GOOD!  

You'll get the last few wrinkles ironed out, I'm sure of it.  If you think back over all you've done I'm sure you'll realize how close you are.  

When you realize this saga started back with your decision to swap firewalls, you will see how far your 'garbage truck' has come!

Congratulations Dave!  

You really deserve frigid cold in that cab, and soon enough you'll have it.  

ArdWrknTrk wrote

When you realize this saga started back with your decision to swap firewalls, you will see how far your 'garbage truck's has come!

Congratulations Dave!  

You really deserve frigid cold in that cab, and soon enough you'll have it.  

Garbage truck  that there is funny!
But you are right I bought it to do weekly garbage runs and wanting AC swapping the firewalls.
Funny it started with AC & the firewall swap and ends with the AC working.

Yes you see that right!
I had to add a total of 5 - 12oz cans of Freon to get it to blow cold.
On the test drive I had to kick the fan back to mid setting and I like that.

The next project I have on the truck is wire in the electric trailer brake controller and wire up the 7 spade trailer light connection. The 7 spade and the Tee with flat 4 for the lights, flat 4 will be cut off and wired to the 7 spade, are already on the truck.
I have a 7 spade to flat 4 adaptor I will keep in the truck if I tow a flat 4 trailer hook up.

A project is never done
Dave ----

60oz???

Whatever it takes to get the low side to pressure.

Ok, so now the trailer socket.
Next a new trailer. (Cutoff Flareside? 🤔)

Yes, there's always something to do.
But you're getting it done!  👍

FuzzFace2 wrote

Nice looking Javelin.

It a 71 - 74 Javelin and looks to have AMX badge on the rear pillar.
They had a base model and a SST model.
Do you know what size motor it had? they came with 258 straight six, 304, 360 & 401 v8's and for transmissions they had auto's and 4 sp sticks.

 Dave,

I was able to talk to the guy with the orange Javelin this evening. It’s a ‘72 AMX with 360/auto.

Roadrunner floor mats in an AMC?
This guy is confused.  😛

Ill have to see if I can find the picture of Compo Brothers crane pulling Zero's AMX out of a tree off Dublin Rd. back in the late '70's.

The cops went looking for the crash that night, but no one bothered to look up.
There was hell to pay come morning.  

Dave, I put one of these on the truck I bought a few months ago. 7 blade with a 4 right beside it.

https://www.oreillyauto.com/detail/b/towing-solutions-3935/agriculture-hd-parts---accessories-19818/fleet---heavy-duty-20088/trailer-plugs---brakes-20099/trailer-connector-wiring-adapters-18814/4a93e97f1ed1/hopkins-towing-solutions-4-terminal-tow-harness-connector/47185/4379562/2011/nissan/titan?q=47185&pos=0

ArdWrknTrk wrote

Roadrunner floor mats in an AMC?
This guy is confused.  😛

Ill have to see if I can find the picture of Compo Brothers crane pulling Zero's AMX out of a tree off Dublin Rd. back in the late '70's.

The cops went looking for the crash that night, but no one bothered to look up.
There was hell to pay come morning.  

The floor mats are almost OK as MOPAR bought AMC mostly for the Jeep line.
We AMCs are invited to MOPAR meets because of that and put a hurting on them when drag racing.
Dave ----

Bruce moose4x4 wrote

Dave, I put one of these on the truck I bought a few months ago. 7 blade with a 4 right beside it.

https://www.oreillyauto.com/detail/b/towing-solutions-3935/agriculture-hd-parts---accessories-19818/fleet---heavy-duty-20088/trailer-plugs---brakes-20099/trailer-connector-wiring-adapters-18814/4a93e97f1ed1/hopkins-towing-solutions-4-terminal-tow-harness-connector/47185/4379562/2011/nissan/titan?q=47185&pos=0

I did give that some thought but I had the 7 blade and others in my auto electrical box and has been on the truck since November when I got the truck on the road, just not wired up.

In almost 20 years I have had the Durango I have not needed the one that came with the truck when new.
But you know how it goes you need the adaptor that is always in that other truck LOL
Dave ----

In the cool of the early morning (4am) I swapped car out and the Durango in the front blower motor stopped working and kind of know it was the resister & plug because playing with it the fan would start working for a bit.
Could not get the plug out of the resister so dropped the unit out of the duct and good thing wires into the plug had burnt.  Got that working again but must have a wire crossed as fan blows high 1 setting before the high but it works!

Then the PU went in(5am), had a belt squeal on start up & PS would make a noise every now and then and with 2 new belts time to check. The 2 new belts were a little loose but the ALT was tight and it still squeals.
I will have to see if it does it with the AC off as it is the same belt I had before the AC.

I then moved onto wiring the truck for trailer brakes & power to the 7 blade trailer plug outback that I also had to wire up. A lot of over & under to pull 2- 10ga wires, trailer brake & 12 volt power, to the rear and make all nice nice with split loom and wire ties.

Out at the plug I have a Tee that ties in the trucks rear light harness that I will wire into the 7 blade plug along with the brake, power and a heavy ground wire.
Now going by the colors marked on the plug the wire colors did not jive with the paper that came with an adaptor I also bought. Nothing other then the ground was on the right blade?
A quick Goggle for RV 7 blade wiring and I was back on track.

Now I could not install the brake controller because it needs a pig tail.
I guess they figured you buy a new car / truck and in the glove box is the pig tail to go between the car / truck harness and the controller. Well our old trucks don't have this and did not know the controller needed it. The wires are pulled inside and tied off out of the way and 1 day after work I will pick up the pig tail. I also need to pick up a breaker for the 12 volt power the one I had would not work.

By 2:30 it was 94* in the garage and I was done for the day, did not even pick up the auto electrical supply box.
Dave ----