Messages

1

Originality / Re: Tire Pressure Decals

« on: May 10, 2025, 03:33:12 PM »

I remember the tire pressure decal on my friend's 1968 Z28 as he hid an aftermarket 8-track player in the glove box and I would change the tapes as we cruised down Van Nuys Blvd. in the early 1970s.  Too bad we don't have the VIN number, but the California license plate was XCR 771.

2

Maintenance / Re: AC Fuel Pumps on '69 Z28

« on: May 02, 2025, 01:21:06 AM »

My 1970 BOSS 302 still has its original Carter X 4910S fuel pump, which was rebuilt.  I find that the gasoline will evaporate from the carburetor if I don't start the engine every couple of weeks.  I know that some will remove the sight plugs and fill the bowls with gasoline.  I'll just let the car sit for a few minutes if it won't start after a number of attempts and usually it will start with one turn of the starter.

I had a 650 cfm Holley 4150 with mechanical secondaries on my 1966 Mustang and never remember having a problem with the float level
Even with a Le Mans camshaft, it would only rev to 7000 rpm, no match for my friend's 1968 Z28!

3

Maintenance / Re: AC Fuel Pumps on '69 Z28

« on: April 29, 2025, 07:30:11 PM »

I've always used the procedure below to set the float level on Holley 4150 carburetors:

https://www.youtube.com/watch?v=ge-mIk6nEYQ

Do you have the same problem adjusting the float level with the Carter M4685 fuel pump?

4

Originality / Re: Radiator Tags

« on: April 28, 2025, 07:02:53 PM »

The CRG table below shows that a ZD radiator tag is from a 1969 396 engine with a manual transmission:

http://www.camaros.org/coolingsystems.shtml#tag

5

General Discussion / Re: brake pedal pressure difference 68 to 69?

« on: April 24, 2025, 03:28:45 PM »

Previous CRG discussion about pedal pressure on 1968 Camaro:

http://www.camaros.org/forum/index.php?topic=15720.0

6

Decoding/Numbers / Re: Factory option code as delivered with on a 69. CO9516 ?

« on: April 22, 2025, 09:12:48 PM »

The invoice posted on CRG shows that option 9561 was $489.75:

http://www.camaros.org/images/copo/copo12.jpg

7

Maintenance / Re: Oil for a ZL-1

« on: April 17, 2025, 01:52:11 AM »

When I bought my 1998 Z28, it was delivered with 5W30 conventional oil from the factory.  As the Z28 was my daily driver, it didn't take long to accumulate significant mileage.  When I had driven about 7K miles, I switched to Mobil 1 and noticed about a 5% increase in mileage, although the engine used slightly more oil than before.  GM used Mobil 1 on the 1998 SS Camaro and Corvette, so I didn't think there would be a problem using synthetic oil in the LS-1 engine.

I do use Valvoline VR-1 in my 1970 BOSS 302 and haven't had any problems.  I also use conventional oil in my 1979 Trans Am, but not VR-1 as oil with high zinc content is not recommended for vehicles with a catalytic converter.

8

Maintenance / Re: Oil for a ZL-1

« on: April 16, 2025, 11:57:32 PM »

According to this article that appeared in Hot Rod, it is suggested that you use a conventional oil when breaking in the engine:

https://www.hotrod.com/how-to/hrdp-0211-gm-chevy-zl1-crate-engine/

9

Trans-Am Camaros / Re: Success of Sunoco Camaro Winning 9 of 11 Races in 1968 Trans-Am Series

« on: April 03, 2025, 06:30:49 PM »

I was sad when told that Hemmings was ending its publication of their Muscle Machines magazine as I always looked forward to receiving the next edition. 

10

Originality / Re: 1968 L78 Fuel Pump

« on: March 29, 2025, 04:06:10 PM »

Prior CRG discussion on fuel pumps:

http://www.camaros.org/forum/index.php?topic=20216.0

11

General Discussion / Re: MO Block

« on: March 28, 2025, 10:50:28 PM »

I have a 1987 parts catalog from MacPherson Chevrolet and a "smallblock V-8 bare block, high tin alloy casting, 4-inch bore, 4-bolt caps, 2.45 inch main journal cranks," had a list price of $631, but available for $536.35.  I'd imagine that a replacement MO block back in the 1970s was available from GM for a similar price and if someone damaged their original block, they would probably just replace it as matching numbers back then wasn't an issue.

12

Decoding/Numbers / Re: 69 4 drum power booster tag and 2gv carb spring

« on: March 18, 2025, 12:05:18 AM »

Different master cylinders were used for Camaros with manual and power drum brakes per CRG as there were bleed valves used on the master cylinder for power drum brakes:

http://www.camaros.org/suspen.shtml#Brakecomp

13

Decoding/Numbers / Re: 69 4 drum power booster tag and 2gv carb spring

« on: March 16, 2025, 06:54:18 PM »

Check out Richard Petty winning at Riverside in 1969.  They were still using drum brakes.

https://www.google.com/search?q=nascar+1969+riverside+raceway&sca_esv=c31d1b2737bb79d7&source=hp&ei=XhrXZ6y4DMbHkPIPnqqz0QM&iflsig=ACkRmUkAAAAAZ9cobtWpl42JEVqN5AR_dY-j3CGOy3sT&oq=nascar+1969+river&gs_lp=Egdnd3Mtd2l6IhFuYXNjYXIgMTk2OSByaXZlcioCCAEyBRAhGKABMgUQIRigATIFECEYoAEyBRAhGKABMgUQIRigATIFECEYnwUyBRAhGJ8FMgUQIRifBTIFECEYnwUyBRAhGJ8FSPJjUABYqUZwAHgAkAEAmAGZAaAB7wqqAQQxNC4zuAEByAEA-AEBmAIRoAKjDMICCxAuGIAEGLEDGIMBwgILEAAYgAQYsQMYgwHCAgUQABiABMICERAuGIAEGLEDGNEDGIMBGMcBwgIIEC4YgAQYsQPCAggQLhiABBjUAsICERAuGIAEGLEDGIMBGNQCGIoFwgIOEC4YgAQYsQMY0QMYxwHCAg4QLhiABBixAxiDARiKBcICCBAAGIAEGLEDwgIOEAAYgAQYsQMYgwEYigXCAgQQABgDwgIFEC4YgATCAggQABgWGAoYHsICBhAAGBYYHsICCxAAGIAEGIYDGIoFwgIIEAAYgAQYogTCAgUQABjvBZgDAJIHBDEzLjSgB6CiAQ&sclient=gws-wiz#fpstate=ive&vld=cid:8a5147d4,vid:_DmuONVqSq4,st:0

14

Decoding/Numbers / Re: 69 4 drum power booster tag and 2gv carb spring

« on: March 16, 2025, 04:42:22 PM »

I don't see a problem using drum brakes on your Camaro as properly maintained, they are okay for normal street driving. 

15

Decoding/Numbers / Re: 1968 Z28 intake

« on: February 19, 2025, 10:30:02 PM »

The intake manifold in 1967 & 1968 also had the oil fill tube on the intake as shown in the photo below:

http://www.camaros.org/forum/index.php?topic=20919.0