Road Runner Nest

Specifically for a '72, if you can. Thanks.

Is it for an A/C car? Auto or manual?

1971 radiator part number for big block cars is : 3443959
1971 recovery tank:3412849

i would think 72 is the same?

did you guys know that there was a 28 inch radiator used in the imperials?

BRIAN

I think my 72 A/C 26" rad is orignal, I'll check the part numbers when I get home tonight.

Dave

Came out of a '72 318 a/c car. Thanks.

400 & 440 26in w/air 3574611, 400 & 440 22in. wo/air 3574614, and the 26 in for the b body police and taxi 3574656. The 28 in imperial has a different part number 3574601. I think I got this right I didnt have my glasses so I could be incorrect.

3574622 is the # for a 318 with air.

rt-man wrote:Specifically for a '72, if you can. Thanks.

There is no overflow or "burp can" on a 1972, at least not one with a 440, A/T, and a/c, 26" radiator.

According to my parts manual, the "core stamped number" is 3574612 and 3574611 (have no idea why two numbers are listed) The "service part number" is 3574611.

FWIW I have heard the motor home 26 inch radiator is a four tube vice three for a car and it cools better, especially with a 440 and a/c. This will be my first summer for the car and if I do have any overheating problems I'll probably try and find one. I am told they fit nicely with no problem, even with the stock fan and thermal clutch.

One trick I learned the hard way. When you fill the system stop when the coolant is 1 1/2 inches below the top of the tank. If you put more in, the first time you shut it off the excess will run out on the floor! Remember it has no "burp can". There is a rubber hose which goes across the top of the radiator and down the drivers side. Comes out through a hole in the lower valance. FWIW took mine about three or four “burps” before it quit making a mess on my garage floor! But then I had it filled right up to the filler neck!

overflow tank not in 1971 in 72-74 yes


rad s3443940 1971 B E 26 383 BOTH A/C

3443946 1971 C 26 440 AUTO A35 HT: IMPERIA:
3443947 1971 C 440 AUTO A/C
3443952 1971 C 383 AUTO HTR
3443953 1971 C 383 440 AUTO A35
3443959 1971 B E 26 383 440 BOTH A35: WITH N5
3443959 1971 8 E 26 426 HEMI BOTH HTR
3443960 1971 B E 26 383 440 AUTO A/C

PART YEAR BODY DM ENGINE TRAN HTR REMARKS
3474601 1972 C 28 440 AUTO ALL IMPERIAL
3474602 1972 C 26 400 440 AUTO A/C POL/TAXI
3474605 1972 C 26 400 440 AUTO A/C
3474607 1972 C 22 400 440 AUTO HTR
3574611 1972 B 26 400 440 AUTO A/C
3574612 1972 B 26 400 440 AUTO A/C
3574613 1972 B 26 400 440 MAUL BOTH

71440 gtx wrote:overflow tank not in 1971 in 72-74 yes


rad s3443940 1971 B E 26 383 BOTH A/C

3443946 1971 C 26 440 AUTO A35 HT: IMPERIA:
3443947 1971 C 440 AUTO A/C
3443952 1971 C 383 AUTO HTR
3443953 1971 C 383 440 AUTO A35
3443959 1971 B E 26 383 440 BOTH A35: WITH N5
3443959 1971 8 E 26 426 HEMI BOTH HTR
3443960 1971 B E 26 383 440 AUTO A/C

PART YEAR BODY DM ENGINE TRAN HTR REMARKS
3474601 1972 C 28 440 AUTO ALL IMPERIAL
3474602 1972 C 26 400 440 AUTO A/C POL/TAXI
3474605 1972 C 26 400 440 AUTO A/C
3474607 1972 C 22 400 440 AUTO HTR
3574611 1972 B 26 400 440 AUTO A/C
3574612 1972 B 26 400 440 AUTO A/C
3574613 1972 B 26 400 440 MAUL BOTH

oops you are right, the recovery tank part # listed above is for 4 doors

BRIAN

71440 gtx wrote:overflow tank not in 1971 in 72-74 yes

My 1972 did not come with any sort of overflow tank. I'm sure of this as I'm the only person who ever owned the car and it was not there. In fact I cannot think of anyplace they could even put it. The passenger side fender well is filled with the charcoal canister, windshield washer, and a/c dryer. The driver side has the battery and starter relay. Not much room left over.

it a opt on 72 74 b-body n51 it gos the driver side of rad. theres a bracket that attaches it to top the rad cradle . then there,s a bracket that attaches to the side of rad at bottom.

71440 gtx wrote:it a opt on 72 74 b-body n51 it gos the driver side of rad. theres a bracket that attaches it to top the rad cradle . then there,s a bracket that attaches to the side of rad at bottom.

Got it...

So it fits on the front side of the radiator cradle in front of the battery? Now I know! Knowledge is power, except when speaking to one’s wife!

I looked at my build sheet and that must be what goes into the blank "5--" block in "Engine Accessories" on line 11. Interestingly enough that “Engine Accessories” section on line 11 is not even listed in the build sheet decode book I have.

Seems odd that would be an option. I mean how many salesmen would ask the question, "do you want a burp can", or how many customers would even know to ask for it?

I wonder if that was standard on California cars?

Amazing how each day I find out more and more about a car I've had for nearly 35 years now!

on 1972 road runner

I think that is N76, Coolant recovery system. My ' 72 RR has that system.