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106594 Posts in 12427 Topics by 4790 Members
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346  Camaro Research Group Discussion / Restoration / Re: 69 Z Voltage Regulator on: October 09, 2009, 08:08:58 AM
That makes sense. I have an October 68 build. My original rad support is long gone and I don't recall if the repro used the well nuts or not. Smiley

-Mark.
347  Camaro Research Group Discussion / Restoration / Re: 69 Z Voltage Regulator on: October 05, 2009, 11:57:51 AM
Why do I have it in my mind that there might be some rubber expansion mounts behind the regulator, like they use on one side of a radiator?Huh Am I just loosin it?

-Mark.
348  Camaro Research Group Discussion / Decoding/Numbers / Re: Muncie 4 Speed Decoding on: October 05, 2009, 06:22:55 AM
The M20 and M21 refer to the internal gear ratios, more specificaly the ratio spread. The M20 is a wide ratio and the M21 is the narrow ratio. Both transmissions have the same 1:1 4th gear but the M21 has the ratios set up so the RPMs do not drop as much when you shift gears as compared to the wide ratio M20. If you have a torquey engine with power over a wide range the M20 is preferred. If you have a more high strung, high RPM powered car, the M21 was preferred. Speaking in general. Smiley

-Mark.
349  Camaro Research Group Discussion / General Discussion / Re: !!!NEED HELP BAD!!! - 1969 Camaro Wiring Gremlins on: September 29, 2009, 04:14:03 PM
It sounds like a ground problem to me. I would start by not re-engineering the battery cable hook up and put the cable where it was originally located on the inner fender. I know the rad support is bolted but you may not have a good conn between the support and the fender. The paint is probably in the way. It has rubber biscuits at the subframe so the only chance you have to make strong contact is the fender to support interface or maybe the hood latch would be enough?

Just my first instinct.

-Mark.
350  Camaro Research Group Discussion / Originality / Re: 69 x33 console delete? on: September 13, 2009, 06:53:47 AM
I have an 04C 69Z with no Tach,guages. So it has to be later that the Tach/guage package became standard.

The 4 guage pack in the console with combined with Tach and Clock was allways optional.

After about May 19th, 1969 all '69 Z/28's had to have a Tach and Center Fuel Guage at a minimum OR they could order the Full 4 Gauge on the console with Tach and Clock.

So an early build did not have to have any extra instrumentation but a late build would have to have a tach via one of the two possible combinations.

-Mark.
351  Camaro Research Group Discussion / Originality / Re: 69 x33 console delete? on: September 04, 2009, 07:40:06 AM
Pink and green sound like reverse light circuit. I bet you do not have any reverse lights when you back up. That is probably due to a header install at some time in the past 40 years or so.

-Mark.
352  Camaro Research Group Discussion / Restoration / Re: Firewall on: September 02, 2009, 07:47:14 AM
The Muncie equipped cars got a new hole in the firewall and the base tranny speedo hole was sealed with a black plastic caplug.

-Mark.
353  Camaro Research Group Discussion / General Discussion / Re: Blow By on: August 31, 2009, 01:02:30 PM
Old problem that never goes away. The covers look like stock alum but might not be OEM or may have been modified.

My advice is to get some stock baffles and set up the PCV like stock so it will work properly. You may have a big valvetrain issue under those covers so the stock baffles might not fit easily under there. There are aftermarket baffles with extra clearance that can be attached but they are probably not as good as the stock setup for oil mist control. Get the stock elbow and plumb it to the air cleaner base with a proper stepped rubber hose. Then and you can forget about the oil mist vapor collection problem.

Smokey Yunick came up with a setup that uses a puke can with both valve covers tied together. Not cheap, pretty or easy but for competition it was a solution to the problem. Stock setup is probably the best. Smiley

-Mark.
354  Camaro Research Group Discussion / Originality / Re: Adding Gills to an X77 - Opinions Please on: August 31, 2009, 10:58:50 AM
No, they will not devalue your car. If you like the look, add them. The extra "bling" will only help at resale time for a NOM Resto-mod car.

-Mark.
355  Camaro Research Group Discussion / Originality / Re: paint options on: August 31, 2009, 10:56:45 AM
Dealers added stripes to cars. They also added spoilers and other add-ons.

I don't see how you could factory RPO order the stripe without the package it normally came with. It was not an option listed as available so rhetoricaly, how would you have done it? Smiley

-Mark.
356  Camaro Research Group Discussion / Decoding/Numbers / Re: SB 3815822 Crank. 283/302, what are they worth? on: August 31, 2009, 10:52:31 AM
No notch is a 283 small journal. Some are not drilled for a balancer retaining bolt. Some have had the threads added later.

It's worth about $50 as a core. Easy to find and not much of a market for them.

JMO. Smiley

-Mark.
357  Camaro Research Group Discussion / Originality / Re: Console mounting on: August 27, 2009, 05:34:21 PM
No riv-nuts and no bracket holes means no console originaly from the factory.

-Mark.
358  Camaro Research Group Discussion / General Discussion / Re: cylinder heads on: August 19, 2009, 12:46:22 PM
I would agree with William - There were no screw-in studs from the factory before 1970. They were used on LT-1's and I believe 350/350's from 1970 and after that. Also used on the L-82 Vettes which had the same 350/350 cam. It is a common and inexpensive mod. The pushrod holes will need to be drilled open and the bosses are milled down. The threads are then tapped and you will need pushrod guide plates.

-Mark.
359  Camaro Research Group Discussion / General Discussion / Re: looking for 68 Camaro RS vin 124378N316762 on: August 18, 2009, 08:13:19 AM
I wish you luck in your search. This is pretty darn difficult for most people to pull off by themselves. You may be able to trace it using a private investigator. The fees are not unreasonable in my opinion. If I were you I would write a check and get some results. I was able to locate the previous owner back to the late 70's in no time at all using that method.

-Mark.
360  Camaro Research Group Discussion / Maintenance / Re: M-21 lube leaking out of the speedo cable on: August 16, 2009, 05:25:54 AM
I tried royal purple and it was slightly more noisy and leaked for me as well. We could argue the reasons but bottom line is I would go back to GL-4 dino 90Wt and look at replacing the O-ring on the speedo gear holder.  Leave the speedo cable attached, loosten the tiny screw that holds the retainer and swing the retainer out of the way, then use the speedo cable to pull the whole thing out so you can get the O-ring replaced.

Definately go back to the GL-4 90Wt gear oil. Synthetic is not good for the brass in your transmission. 90Wt will be quieter, it will leak less, and the brass synchro rings will be much happier.

-Mark.
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