Topics

1

Decoding/Numbers / 67 Tag Decode

« on: March 26, 2024, 02:29:40 PM »

Local dealer has this 67 convertible on his lot. I'm not too familiar with 67's. Looked at decode info on site and think I have it, but don't want to give him bad info. It' red, black top badged as SS, original motor gone. Insite? Thanks

2

Decoding/Numbers / Rear axle code question

« on: December 27, 2023, 03:29:46 PM »

I'm a little confused by the coding on this rearend. Maybe I'm reading the charts wrong. The casting reads C289 (March 28 69). The housing stamp reads C  BL 0120G2 (3.07 open January 20 Detroit 2nd shift) right? And why the C in front?

3

Maintenance / Fan Clutch issue?

« on: June 27, 2023, 02:04:22 PM »

I have a stock 69 Z-28 cooling system with all components as original with the exception of the removal of the smog pump, now using a shorter 7440 XL gates belt. Was having a heating problem at low speed and idling in hot weather conditions. The fan clutch was an Eaton unit purchased over the counter from GM in the 70's. Noted that the fan would free spin for many revolutions after engine shut down with a warm engine. Determined that the fan clutch was faulty and sent it to a respected restorer/rebuilder for overhaul. Received it back and overheating issue went away. Now I am noticing squealing which I believe is belt slippage above 4500 RPM. Belt has been replaced and is tensioned properly; all pulleys appear to be in good condition. I am suspecting that the fan clutch is not disengaging properly causing high belt loads at high RPM. In John Z's cooling article, referring to fan clutches he stated, "most of them essentially disengage over 3500 RPM" Sorry this is so long. Any thoughts?

4

General Discussion / Factory 12 bolt multi leaf pinion angle

« on: June 21, 2023, 02:30:57 PM »

There is an old thread on this subject that had some great illustrations attached. I saved the link, but I can't access the photo bucket images anymore. Does anyone have the info that can be reposted? Thanks

5

Originality / JL8 caliper finish

« on: May 07, 2023, 04:29:40 PM »

Were JL8 calipers originally painted, or were they natural iron?

6

Decoding/Numbers / Quadrajet ID?

« on: July 07, 2022, 01:48:05 PM »

Our son received this carburetor with his 67 Camaro. Don't know much about Quadrajets, couldn't find those numbers on forum info. Can anyone decode for us?
Thanks

7

Maintenance / Cooling system capacity?

« on: May 01, 2022, 12:24:10 AM »

Filling my cooling system on my 69 Z-28. Fresh engine no water in jackets, original radiator recored by Glen-ray. Manual says 16 qts. I have 14 in and it's full. Bled at upper heater hose even jacked front up and bled again. Might be water in heater core don't think it could be that much. Ideas?

8

Originality / 1969 Z-28 Engine Paint Detail Questions

« on: November 06, 2021, 02:55:49 PM »

I have the original spark plug wire brackets (the stands that bolt to intake manifold) for my car. They've been painted orange in the past, what was the finish originally? Also the PCV elbow pipe in the left valve cover, semi-gloss black?

9

Maintenance / Cylinder Head Repair?

« on: October 21, 2021, 02:27:53 PM »

Had the misfortune of cracking one of my original 302 heads(crack in combustion chamber). Was wondering if anyone has experience with a rebuilder that can do a reliable repair?

10

Maintenance / CV-746 PCV valve replacement

« on: August 13, 2021, 02:51:40 PM »

Is there a currently available AC or aftermarket replacement for the CV-746? Looking to replace incorrect vale in my 69 Z-28.

11

Restoration / Stripe Template

« on: July 05, 2021, 03:34:46 PM »

Looking to buy a stripe template for a 69 Z-28. Best manufacturer? Or all made by same company?

12

Maintenance / 69 Z-28 Oil Pump Recommendation

« on: June 08, 2021, 02:06:20 PM »

Replacing the oil pump on my 69 Z. Years ago I purchased the current one from GM. What is a suitable replacement currently available? I've been looking at the Melling M55A. Thanks

13

Originality / 1969 radiator finish

« on: March 19, 2021, 03:11:17 PM »

Had my radiator redone by a reputable restorer and it came back finished in a sheen I would say leans more towards semi-flat than semi-gloss. Most I've seen are glossier than mine now is. What finish is accepted as correct? 1969 Z-28. Sorry if this has been addressed many times before tried a search and wasn't successful in getting an answer.

14

General Discussion / Throttle lever orientation?

« on: January 03, 2021, 12:46:14 AM »

I'm changing my throttle linkage from the six cylinder/crossram cable style to the V-8 lever set-up. I'm installing the lever and consulted the 69 AIM, it appears the show the arm installed with the offset towards the left or drivers side of the car. The arm seems to be too far over and interferes with the washer pump. Looked at my son's 67 and it is installed with the offset the other way. Is the illustration a misprint (item 11 Lever) in attached?

15

Restoration / Carburetor Restoration

« on: October 25, 2020, 03:31:48 PM »

After 45 years of sitting on the shelf I'm going to have my 69 Z carburetor redone. Any recommendations on a shop to do the work?