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Same problem for years I had the exact thing happening on my 72 big block. Tried everything like you did. At the time I was running a Mallory dual point distributor with mechanical advance. Awesome distributor BTW. I decided to start going in the NCRS direction 5 years ago and replaced the...

Quite a while back I posted a question about my 72 454 with A/C overheating sitting at stop lights or stuck in traffic especially if it was a warm day. I ran into a 68-72 NCRS judge here in my home town and talked about my situation. He wanted me to put my original distributor back in and remove...

Thanks eveyone!! I spent the last few days and cleaned all fluid from the differential and inspected it carefully. I didn't see any major cracks but the diff was painted 16 years ago so it may hide a hairline crack. I found that it is definately coming from the fill plug area as this is the...

72 differential fill plug seems to be leaking. It takes a 5/8 open end wrench on plug but no room to swing wrench ( because of spare tire bucket and half shaft). Is there a tool out there that I can put on my ratchet ( socket/ crows foot or otherwise) to remove without taking spare tire bucket...

Where exactly should the NCRS correct placement of the date code for the removable rear window be located on an October 71 production of a 72 coupe? Thanks.

Wanted in excellent condition 2 rear tail light housings marked "GUIDE 19 SAE STDB 68-AR71 and 2 housings marked GUIDE 19 SAE STDB 68. Both housings have no fibre optic holes. Thanks.

Did an early 72 ( October 71 production) come originally with the T3 headlight bulbs ( triangle with vertical lines ) I think the GM #4001. Or did they come with the GM powerbeam bulbs. I think that GM # is 6001?

Thanks everyone you guys are great!!!!! All the info I needed, Perfect!!!

Trying to find out what year a 1100597 61amp alternator is from? Anyone know? The date code is not readable. Thanks.

Not exactly sure about the 427 heads part but you can get original style dated braided plug wires at Paragon for $130.00. The thing about the original plug wires is they have the exact angle at the plug so there is a better gap between the headers and the spark plug wire end. Take your R44 XLS...

If you are using the large tube hooker/ hedman headers use the NGK YR-5 spark plug with the original style braided plug wires. You will never cook another wire again.

When I first got my 72 the alarm didn't work. After alot searching and testing with a meter I found the wires from the drivers door switch to the relay had slightly heated together and shorted. These wires are found inside the rear wheel body mount access cover. After cleaning, separating and...

I have an original 72 second edition manual but need the 72 first edition manual ( believe it was a Sept. 71 printing) as my car was a late 71 production car.

Ebay has a set on auction right now,$300. Ya, steep but they are getting rare.

Looking for factory tinted removable rear window glass date coded anywhere from Aug to Oct. 71. Must be in good to excellent condition, metal frame not needed.

My 72 had the chrome/stainless steel top piece that had 4 screws at the front nearest the windshield but a friend gave a t-bar from a 69 that had no screw holes and was just nicely buffed so I replaced mine. It came out without removing the windshield moulding and the new one went in with a bit...

O.K. I know it gets cold here in Canada and I've been told I go way over board but.......... I jack up the car,put it on jack stands, remove the tires and store them on a stand. I also remove each spark plug add about 1/2 an ounce of oil to each cylinder, crank, and put plugs back, add stablizer...

I'd really like to see the pics of those tops because I have a set that have been in my garage for 20 years. I never use them as I have always used the stock t-tops for shows and cruise nights. The glass in mine are smoke color and have a dual etched stripe in the glass just at the edge of the...

Yes, when I did the u joints about 4 years ago I did the fluid change and only now am I having this noise. I didn't put the GM special additive in until the noise appeared and it doesn't seem to help. Just wondering if noise is coming from turning left only that something inside is worn and is a...

72, 454, automatic trans., stock rear gear. I noticed a slight grinding/clunking noise coming from the rear. The noise only happens when I turn left at idle speed anything faster there is no noise. I replaced u-joints drive shaft and half shafts 4 years ago. I checked and added the special GM...