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107552 Posts in 12507 Topics by 4812 Members
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3676  Camaro Research Group Discussion / Originality / Re: heater core assembly ??? on: August 22, 2006, 10:10:13 AM
  I was of the impression the firewall pad went between the heater box and the firewall and thats what sealed the area you place the caulk in pic# 4 ?

That's correct - the dash mat went on first, and served as the seal between the front of the heater box and the inside of the firewall.
3677  Camaro Research Group Discussion / Decoding/Numbers / Re: Question 386 block on: August 21, 2006, 09:40:25 AM
I get confused myself about the various combinations of frame brackets and mounts for different small-block engines, and can never remember it - I usually wait for William to chime in and explain it. I don't know why they're different, unless it has something to do with clearance to the front stabilizer bar with 7" vs. 8" balancers.

The extra six main cap bolt holes in 4-bolt blocks were drilled and tapped in the main block machining transfer line, but those six holes were done in a separate station in the line; there wasn't room for the six 4-bolt tool-head spindles next to the 2-bolt hole spindles. The 4-bolt blocks were easily detected after that station by automatic probes in subsequent stations - no manual intervention was required. There was no difference at all in the block casting between 4-bolt and 2-bolt blocks - some got ten main cap holes drilled/tapped, some got sixteen.
3678  Camaro Research Group Discussion / Decoding/Numbers / Re: COPO? on: August 19, 2006, 07:32:28 PM
Oops - missed the "RS" item in the first post.  Undecided
3679  Camaro Research Group Discussion / General Discussion / Re: History of this site on: August 19, 2006, 07:25:08 PM
Bill, check out this link for CRG history and current members:

John Hinckley
3680  Camaro Research Group Discussion / Decoding/Numbers / Re: COPO? on: August 18, 2006, 11:37:12 AM
Only an SS would have had a black standard grille center section - see:
3681  Camaro Research Group Discussion / Originality / Re: Black Firewall Paint on: August 14, 2006, 10:03:47 AM
That's why it's important to have real original unrestored/unmolested cars to examine and use as educational properties when developing a judging standard, which is why NCRS has the "Star/Bowtie" judging category just for that kind of car. Star/Bowtie judging is done solely based on absolute originality, with no concern whatever for condition; Bloomington Gold has a similar category called "Survivor" judging. The judging standard for restored cars (NCRS Flight Judging) has been developed over the last 30 years based on observations of known-original cars as well as with Chevrolet Engineering documentation and an incredible amount of research at the part number level, and the 100 page-plus judging guides for each year car are revised every couple of years based on continuing observation and research by 15,000 members - we continue to learn as we go along.
3682  Camaro Research Group Discussion / Decoding/Numbers / Re: your thoughts on date code 302 on: August 14, 2006, 09:52:44 AM
I have 10B build date Z; Engine assy date is Sept; Block casting date is I 23 8 - Aug; Only about 6 weeks from block casting to assembled Camaro.

Jimmy V

I 23 8 is September 23rd, not August. Smiley
3683  Camaro Research Group Discussion / Originality / Re: Did GM ever put M-20 in 69 Z-28?? on: August 12, 2006, 04:04:08 PM
Lots of Z's were built with M20. You had to order a 4-speed, but you could order M20, M21, or M22.
3684  Camaro Research Group Discussion / Decoding/Numbers / Re: Is there date/year codes on hood hinges?? on: August 11, 2006, 09:53:35 AM
If they're dated, I've never noticed it - I don't see anything on my original '69 hinges.
3685  Camaro Research Group Discussion / Maintenance / Re: Recommendation on Transmission Pilot Bearing on: August 08, 2006, 02:59:01 PM
I've used the GM needle roller bearing in several project cars (after dialing-in the bellhousings) with no problems at all. Gotta love the comment above about the needles at 7,000 rpm - there's no relative motion between the needles and the input shaft unless the clutch pedal is depressed; how often does anyone free-rev the engine to 7000 rpm with the clutch pedal on the floor?

The correct oilite bronze bushings work fine too, but take a magnet with you when you buy one, and don't take it if it's attracted to the magnet; there are lots of Chinese counterfeit bushings out there that are mostly iron, and they'll score the input shaft.
3686  Camaro Research Group Discussion / Restoration / Re: Dash Instrument Panel on: August 08, 2006, 02:50:45 PM
Make sure the stamped sheet metal grounding strap is still in one piece and is in place - it attaches to the wiper switch and the light switch, has a "leg" that attaches to the lower I.P. reinforcement, and has a wire pigtail on it that also attaches with a separate screw to the lower I.P. reinforcement along with the I.P. harness ground wire. If that strap isn't in place, the wipers won't work, nor will the instrument lights.
3687  Camaro Research Group Discussion / Originality / Re: Smog tube question. on: August 08, 2006, 02:43:49 PM
They had a greenish-brownish-colored coating - don't remember the technical name for it, but it was never used on any other parts as far as I know.

3688  Camaro Research Group Discussion / Decoding/Numbers / Re: 69 Camaro date codes-How close?? on: August 08, 2006, 02:21:46 PM
In that case you are in great shape!   Engine built on Nov 19, distributor built on Oct 25 works for if I could just remember when to include or not to include the letterr I in the date coding process I'd have it made.

Here's your answer to that one:

3689  Camaro Research Group Discussion / General Discussion / Re: 1967 SS350 Replacement Clutch Recommendation on: August 08, 2006, 02:12:34 PM
I've had good luck with LuK replacements - they're the largest OEM clutch manufacturer in the world, and have a good reputation for reliability; if your AutoZone doesn't stock them, they can get them for you, or you can get them at .
3690  Camaro Research Group Discussion / Decoding/Numbers / Re: 69 camaro 327 exhaust manifold #'s needed on: August 07, 2006, 09:40:28 AM
The "527" and "826" manifolds are shown as correct for all manual transmission, with or without A.I.R., small block Camaro applications for 1969 including the 302 Z28 engine.  These manifolds have A.I.R. drilled and tapped connections.  If A.I.R was not used, the ports were plugged.   

From personal experience, I removed a set of the "527" and "826" manifolds from a 69 327 base coupe that had a 3 speed manual and no A.I.R.  The manifolds were required because of the 3 speed manual trannsmission.  Since there was no A.I.R., the ports were plugged from the factory.  The "527" manifold is currently on my car.

Plugs weren't used in the exhaust manifolds on non-A.I.R. engines - they used the same 527 and 826 castings, but they weren't drilled or tapped for the air manifolds. The only engines that used factory-installed plugs in the exhaust manifold openings were those that specified RPO KD1 (Less Air Injection) for overseas export.
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