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Topics - twol78s

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General Discussion / 1967 L78 MQ versus MR Production
« on: February 24, 2015, 06:01:02 PM »
Hello, all,

Perhaps I've just not found the information in my searches, but I don't seem to be able to find anything relating to the number of MQ (non-smog) versus MR (smog-code) L78 engines produced for Camaro in 1967.

I've seen figures that say that about 25% of total '67 L78 Camaro production was done at Van Nuys, which would have been roughly 280 cars, and I'd suspect that the vast majority of these (90%?) would have ended up with MR-coded engines in them, which would be just about 250 cars.   Problem is, these numbers are just supposition.  I'm wondering if anyone has run across actual figures.

Given that many of the cars destined for California (which, in '67, required an Air Injection Reactor system to meet California Emissions requirements) were built at the Van Nuys plant, it would make sense that the vast majority of the MR-code L78-equipped '67 Camaros would have ended up being put together in Van Nuys, although it's certainly possible that some Norwood-built '67 MR-coded L78 Camaros could have been built, with their destination dealership being somewhere in California.

Has anyone come across any MR-coded '67 L78 Camaros built at Norwood?  I venture to guess that there weren't very many of these made.

What, if any, differences were there in the smog system/exhaust manifolds between L78 and L35 smog-equipped engines?

If this has been answered before, my apologies.  If so, I'd appreciate pointers to where I might be able to find this information.

Keep the cars Shiny-Side-Up!

-Rick






2
General Discussion / GM Big Block Aluminum Water Pump
« on: February 09, 2015, 02:20:28 AM »
Anyone here familiar with GM big block aluminum water pumps?
When I got my '67 SS/RS 396 L78 Camaro many years ago, it had this aluminum water pump on it.
I'm quite positive that this is the factory water pump, probably being a replacement put on the car to replace the original cast-iron water pump, probably sometime in the 1970's.
The part or casting number is 3875[89]28.  The [89] indicates that I can't tell if that digit is an 8 or a 9.  There also appears to be some other code reading 5421 stamped below the casting/part number.
I've searched around to see if I could find information about this water pump, but haven't been successful.
Was this a parts-counter-only water pump, or was it installed from the factory on some GM big-block equipped car?
The water pump works fine, and I at this point I'm not inclined to replace it with a correct cast-iron water pump, but would just like to know more about it.
Thanks in advance,

-Rick


3
Originality / Shifter rebuild
« on: January 31, 2015, 10:46:57 PM »
I have a '67 SS/RS Camaro that currently has an aftermarket (circa 1979) Hurst shifter in it.
When the Hurst shifter was put in, the original Muncie shifter, mounts, linkages, and fasteners were carefully put away in the box for the Hurst shifter.   I still have it.
I am wondering if there is someone who can completely go through the shifter and rebuild it to like-new condition?  It was really sloppy and needs to be completely rebuilt.

Any help greatly appreciated.

-Rick

4
General Discussion / Earliest Block Pad Date Code LOS 67 L78 Camaro
« on: August 07, 2012, 08:54:10 PM »
I am trying to find the earliest block pad date code for Van Nuys-built 67 Camaro L78 (Engine code MR)

5
General Discussion / Chevrolet Dealer in Reno, NV
« on: February 24, 2011, 08:17:51 PM »
I have a Van Nuys-built '67 Camaro that DMV records show was originally delivered to a Chevy dealership in Reno, Nevada sometime in latter half of 1967.
I'm wondering if anyone might know the name of the dealership.  Champion Chevrolet is currently in Reno, but they opened in the late 1980's.
 

6
Restoration / 67 Manual Disc Master Cylinder Rebuild
« on: February 24, 2011, 08:22:18 AM »
The Master Cylinder in my '67 SS/RS Camaro has failed.   Rust in the bore caused the piston to no longer seal in the cylinder.
A local mechanic tried to hone it, but the rust scoring is too deep to clean up such that a rebuilt piston/seals will fix the problem.
Looks like I need someone to sleeve it.  Question is, who?  Anyone know someone that can do this right?  I've found a few places online (Karp's(CA) and Apple Hydraulics(NY)), but would appreciate info. from someone who has worked with a vendor before and had good work done.  Brakes are too important to have someone do a sub-standard job.  Some places advertise brass sleeves, with others using stainless steel.  Which is better?

Casting number is 5459467, 1" bore, with application code AD.

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