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102495 Posts in 12091 Topics by 4669 Members
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2086  Camaro Research Group Discussion / Originality / Re: original big block heads on: October 14, 2006, 03:25:24 PM
Basically John contacted me with this question off-line and I gave him my "opinion", but I would like to hear JohnZ's answer regarding the "official" Gm policy of placing mismatched parts on an engine from the factory.

The 840 heads had a CC of 106.8 and the 291's had a CC of 109.037. In addition, the 840 heads used an exhaust valve size of 1.72 while the 291 used an exhaust valve size of 1.88, thus making the assembly (for want of a better word) not "balanced" if both were used on the same engine. The 840's also used the "N" (flat style) spark plugs while the production 291's used the "Peanut" (tapered style) plugs. The "Service Replacement" 291's were cast in both the "N" and the "Peanut" versions, but again, according to CBTN, the "N's" were for service use only.

My question to you John (Hinclkey) are twofold:

1. Would the Tonowanda plant install one 840 head and one 291 head on a production engine?

2. Am I correct in that any "left-over" 840 heads that were still around Tonowanda after the 291 heads were introduced in May, 1969, would have been transferred to the Service Department?

Ed
2087  Camaro Research Group Discussion / Originality / Re: Starter part number on: October 14, 2006, 12:31:19 AM
Dean,

My September, 1968 P&A 34 shows the following:

Group 2.041 - Motor Assy, Starting

1969 ALL 396
1969 Chevelle, Camaro (350) (exec. reg. fuel) - 1108418 (with switch, stamped 1108418)

My September, 1968 X691A book shows the following:

Group 2.041 - Motor Assembly, Starting

1969 Camaro 350/300 with standard trans, 396 - 1108418

Ed
2088  Camaro Research Group Discussion / Research Topics & Reports / Re: 68 RS center grille on: October 13, 2006, 07:03:36 PM
Yes Steve. Fairly certain the grille is original. Of course, after 40 years, no one can be 100% sure, but we have to go with what we believe.

Ed
2089  Camaro Research Group Discussion / Originality / Re: 1968 heat pipe on: October 12, 2006, 03:55:30 PM
Yes, the A.I.M. is the Assembly Instruction Manual and available through all the repop houses. The P&A isn't available in reporduction form so you have to find an original from places like ebay or one of the automotive publications dealers like Walter Miller or the like.

Ed
2090  Camaro Research Group Discussion / Originality / Re: 1968 heat pipe on: October 12, 2006, 01:05:18 PM
Kinda.

The AIM is great for original Chevrolet part numbers, but of course, no help at all for the Fisher stuff. Fisher used another manual that's never been released for reproduction, but it sure would be nice to have!!

The Parts and Accessories Manual (P&A) is great, but it too has limitations. If a part is discontinued or superceeded, another part may be substituted, but not "correct" for your car. It works, but doens't necessarily look the same.

There's no one book that will give you everthing. You have to have several and do some comparison.

Ed
2091  Camaro Research Group Discussion / Decoding/Numbers / Re: carburetor codes on: October 11, 2006, 11:14:49 PM
Try THIS SITE for Rochester carb decoding.

Ed
2092  Camaro Research Group Discussion / Originality / Re: 1968 heat pipe on: October 11, 2006, 10:43:18 PM
Yes. All 1968 models with V8's and A.T. used the same stove, P/N 3916302.

Ed
2093  Camaro Research Group Discussion / Decoding/Numbers / Re: RE: 1969 Z28 (The Real Thing ?) on: October 11, 2006, 07:15:36 PM
Chuck,

You won't see an X code on your car since it was assembled in Los Angeles (Van Nuys). Only Norwood (Ohio) cars got the X codes.

The N173 is a Van Nuys assembly code. Your car was the 173rd car built on the N day in the thiid week of February (that's what the 02C means - Third week of February, 1969).

Ed
2094  Camaro Research Group Discussion / Originality / Re: 1968 heat pipe on: October 11, 2006, 07:09:22 PM
Depends on if your Camaro car was a 2BBL or a 4BBL V8.

But, if it was a 327/275 or 350/295 car (Rochester 4BBL), then yes, the Nova, Chevelle and Camaro shared the same tube.

Group 3.417 - TUBE, Air Cleaner Intake

68 Nova, Chevelle, Camaro with A.T. and 4BBL (327, 350) P/N 3916309

2BBL applications were a different P/N

Hope this helps...

Ed
2095  Camaro Research Group Discussion / Research Topics & Reports / Re: 68 RS center grille on: October 10, 2006, 11:20:24 AM
Paul,

It's actually a pocess called Vacuum Metalizing. All plastic parts like the Grille, Air Diverter "Balls", 69 Door Lock Knobs, etc... use this process. Since you can't "chrome plate" plastic, Vacuum Metalizing is used to "simulate" chrome. You can read more about the process HERE.

Ed
2096  Camaro Research Group Discussion / Research Topics & Reports / Re: 68 RS center grille on: October 09, 2006, 10:41:08 PM
Steve,

More evidence that the grille was black by 05D.

I've been conversing with Jack Enright via email, and he has a Norwood built 68 RS/SS 396/375 with an assembly date of 05D. His grille is black and has the raised vertical bar.

More fuel for the fire!

Here's a picture of his grille...

Ed

2097  Camaro Research Group Discussion / Originality / Re: Where are the part #'s ??? on: October 08, 2006, 01:51:36 PM
Paul,

Yes they are. (I forgot to add that into the description above.)

Ed
2098  Camaro Research Group Discussion / Originality / Re: 68 SS Hubcaps on: October 07, 2006, 11:03:45 PM
Sorry Steve. I didn't get that information, but it's a later build. The stripes show it to be after January 1st. And by the way, the grille is BLACK!!! Here's another picture showing the grille, and as a bonus, a Poloroid of the engine compartment the same day the owner brought it home from the dealership!

Ed



2099  Camaro Research Group Discussion / Originality / Re: 68 SS Hubcaps on: October 07, 2006, 10:17:28 PM
I'm going to reopen this discussion again because I was digging through some old pictures I had and just found a picture of an original 68 RS/SS 396/350 Coupe with the full hub caps still intact. Here's a picture.

Let the discussion continue...

Ed


2100  Camaro Research Group Discussion / Originality / Re: Where are the part #'s ??? on: October 07, 2006, 11:58:42 AM
Okay Paul, here's the 1968 Camaro Sport Coupe with Deluxe Interior Part Numbers:

Group 10.710 - Strip, Front Door Glass Run Channel

Outer - 7729998 (2 required)
Inner - 7755881 (2 required)

Group 11.015 - Strip, Quarter Window Glass

Outer (Left) - 7725935
Outer (Right) - 7725934
Inner (Left) - 7762327
Inner (Right) - 7762326

Note that the above part numbers are for a 1968 Camaro Sport Coupe with Deluxe Interior. Convertibles with Standard Interior, Convertbles with Deluxe Interior and Sport Coupes with Standard Interior use different part numbers.

As for the P&A (Parts and Accessories Manual), scour ebay and some of the Automotive Book stores like Faxon, Bob Johnson's, Walter Miller, etc... HERE'S A LIST of automotive literature dealers I found online. This should give you a good start!

Be advised that they ARE out there, but hard to find. And expensive when you do find one! My September, 1968 matched set (P&A 34 - "Parts and Accessories Manual" and P&A 25 - "Illustrations and Special Information Manual"), set me back $200.00 several years ago. By now they're probably in the $250.00 EACH range. But the deals are still available. I just purchased a 1969 Camaro and Corvair Preliminary parts Catalog for Canada (P/N X691A) from September, 1968 for $20.00!!

Good luck on your hunt...

Ed
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