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My '73 small block RR was ordered with N51 Maximum Cooling so it has the 28" radiator (P/N 3673028) in it. I want to replace it with a new radiator but so far, I haven't found a direct fit replacement. I am thinking to just go with an aluminum 26" model, but I am wondering what changes between...

I put a new power steering gear, pump and lines on my ‘73 Road Runner. I added fluid and started the engine then shut it off to check the fluid level. I added some and I guess put too much in. Then I started the engine and did the turn it lock to lock to try and purge the air out. I turned...

I have a crate 408" magnum stroker from BluePrint. The car is a 1973 Road Runner. The engine came with an external coil HEI style ignition. Knowing I would not need the ballast resistor or the electronic ignition box I decided to make a new wiring harness and not cut up the factory one...

My '73 Road Runner has what appears to be a factory power steering cooler. Its mounted directly to the back of a Federal style pump. Is there a code on the build sheet that would have driven this?

Looking at the factory 1973 Service Manual wiring diagrams and I have some questions that I can’t figure out or want to be sure on. Say for instance I’m looking at the engine compartment diagram and I see the G2-20V wire from the bulkhead cavity 21 to the temperature sending unit. In the...

Ok, I’ve never used one of the engine lift plates that mounts to the top of the intake where the carb sits. I’ve always done a chain across the heads but that carb plate sure looks like it would be easier to position the engine coming out or back in. Are they really safe to use with an...

Does anybody know the part number for a set of Doug’s Headers to fit a 1973 Road Runner with a small block, 4 speed, power steering if it makes a difference? I’ve tried to figure it out in their website, Summit’s website and even called Doug’s and gotten no where. Summit shows D453 to fit...

I need to order some replacement u-bolts for my rear suspension. I haven’t pulled one off to measure as I was hoping I could easily find some but it seems the 1973 rear suspension with the isolator pads around the springs freaks people out. I know they are 1/2”diameter and 3-1/8” on the...

Well, the third time is the charm. Right? Before yesterday I had found two broadcast sheets in my car, neither of which matched it. Yesterday while replacing the package tray I found a third and IT MATCHES!! I purchased the car from the original owner and when I asked about the odd...

I hope this is ok..... linking to my ad thread that closed for lack of activity. For sale is a Hurst Competition Plus 4 speed shifter (p/n 3916789) and an installation kit (p/n 3734089). Details here...

Looking for a good usable set of rear bumper mounting brackets to fit a ‘73 RR. They don’t have to be show quality, just solid.

On a ‘73 Road Runner, do the “D” shaped drain plugs that go into the trunk extensions install from the inside or outside?

For sale is a Hurst Competition Plus 4 speed shifter (p/n 3916789) and an installation kit (p/n 3734089). Purchased in the fall last year, mocked up on a trans but never installed in the car. It isn’t new, but it’s in unused excellent condition. I think I had to remove a little from a...

I have a 73 Road Runner 318 with a 3 speed manual transmission. I rebuilt an A833 OD trans and have the correct bellhousing and a new Hurst shifter setup. I started the swap today and I’m hoping it’s all going to fit. The shifter on the 3 speed seems to sit aft and up from the trans mount...

I have a ‘73 RR with stock rear suspension. I was curious to see how much the shocks change the ride height of the body so I measured ground to the same point on both sides with and without the shocks attached to axle mounts. When I took them off the body dropped about 1/2” on both sides...

At what point do you change to a high volume oil pump? Do you change to a higher capacity pan at the same time?

A guy I know has a set of D453 ceramic coated Doug’s Headers for sale. He was running them on a Duster with a 340. I am trying to figure out if they will fit my ‘73 RR with a 360? I called Doug’s and that was a waste of my time. Young men with a list of what it fits. Felt like I called a...

I’m guessing the rear bumper brackets are the same for 1973 and 1974 Plymouth Road Runners and Satellites? Are they interchangeable with same year Chargers? Anyone have a set for a ‘73 RR they would let go of? I’m not in the “need a set” mode but I’d like to have them in case my “tuck it in”...

Just wondering if you guys paint your aluminum heads or run them natural? What keeps them from oxidizing?

How much hp and torque can an A833 overdrive transmission take?