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106486 Posts in 12420 Topics by 4787 Members
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46  Camaro Research Group Discussion / Decoding/Numbers / Re: Interesting Tag-Pre Z10 on: October 17, 2014, 08:08:39 AM
.. and in another 10, or 20, or 30 yrs... when it's all worn down again.. some new owner will see the 50/50-720 tag and assume he has a white/orange houndstooth car.. and restore it again... and people will have forgotten all about 'repro cowl tags...??
47  Camaro Research Group Discussion / Decoding/Numbers / Re: Interesting Tag-Pre Z10 on: October 16, 2014, 10:38:55 PM
Eagle eye Bentley!  Smiley

I guess the cowl tag codes meant nothing to this owner/restorer?   Pretty car, but wouldn't the value be greater in white/orange? Smiley
48  Camaro Research Group Discussion / General Discussion / Re: need distributor and qjet carb tune for 1970 350/300hp - Detroit area on: October 16, 2014, 10:36:18 PM
I'm betting you meant 'Correctly'...   rather than 'Corruptly'??  Smiley
49  Camaro Research Group Discussion / Originality / Re: Galvanized finish on 67-68 tail light housings, hot dipped or electroplated? on: October 16, 2014, 09:17:30 PM
69Z28-RS,

I noticed Phillip head screws holding the housings onto the bezels.  Are these correct for originality?  I thought the fasteners were hex head zinc screws?

Bernie

I bought those from a racer friend, and then sold them.  I know very little about '67's.. and only noted that the taillight housings seemed in very good shape...
50  Camaro Research Group Discussion / Originality / Re: Galvanized finish on 67-68 tail light housings, hot dipped or electroplated? on: October 16, 2014, 10:50:42 AM
Attached is a photo of the back of a pair of '67 TL housings which came from a race car (long ago take offs) that I think might be representative of 'original'??
51  Camaro Research Group Discussion / Originality / Re: 772 fans and unstamped fans on: October 16, 2014, 08:31:31 AM
Guys,
What's the distance between the mounting points on your clutches? This is something I've been meaning to add to the article for a while...     Thanks bergy for the pic to modify. Smiley

Kurt,

I measured mine this morning; it was sort of difficult with the clutch mounted to the fan, but I think I got a good measure at 1.5" (or very close to that).

Sch Prod Date       Model       Fan PN(date)   Fan PItch       Clutch (date)            Mnt Pt. Distance
09C (18Sept69)           Z28        3947772 (H69)     2.25"         EATON CV (H21J)          1.5"
52  Camaro Research Group Discussion / Originality / Re: 772 fans and unstamped fans on: October 15, 2014, 03:07:21 PM
Sarge,

Per the CRG info, and your photo, you have a Hayes-Albion mfg fan, and those aren't stamped...... explains why mine and yours are so different.
When you get a chance, lay it down flat and measure the height of the highest part of a blade....  since it's a late car, it should be 2.25" inches..
53  Camaro Research Group Discussion / Originality / Re: 772 fans and unstamped fans on: October 15, 2014, 06:29:22 AM
Sarge,

Pictured below is my original fan; the areas along the blade edge which has the paint partially removed is where the stamped numbers are.  All the blades are stamped identically in the same location on each.  Note:  Mine is a late car (fan dated H69) and is a 2.5" pitch.

I notice the rivets are totally different between your fan and mine.   Different manufacturers??
54  Camaro Research Group Discussion / Originality / Re: 772 fans and unstamped fans on: October 14, 2014, 11:25:32 AM
when I first examined my original Z28 fan, I couldn't see any stampings on the blades, but after lots of cleaning (using a little fine steel wool along the edge, I did find the '772 stampings and date'...  If the fans have been painted (and repainted maybe?), you may not think numbers are there..  they are very lightly stamped...
55  Camaro Research Group Discussion / Restoration / Re: Black Paint on Chrome Parts on: October 12, 2014, 09:47:00 PM
A guess:  tape masking and using a very light coat of a 'self etching' or 'zinc chromate' type of primer under the topcoat *might* be the key... Haven't done it on chrome, but on galvanized metal or aluminum it typically is necessary.
56  Camaro Research Group Discussion / General Discussion / Re: 1967 Camaro stolen on: October 12, 2014, 09:44:05 PM
And..   the bottom line...   Make sure you have it adequately insured via an 'agreed value' policy to cover against all the various ways it might be lost.
57  Camaro Research Group Discussion / Restoration / Re: Restoring a galvanized finish ??? on: October 12, 2014, 09:24:26 PM
Bob,

I think that was Dave, not I, with the tail lamp housing cleaning question...  but to response to your question/comment I think the vinegar, being a mild acid, would help to remove the dirt and light oxidation on the housings and prepare it for the subsequent steps for polishing and buffing to a clean shiny surface.

Steps from film:
1.  Clean the metal with liquid dish soap (1 tsp per cup of hot water); mix until water is soap; scrub with scrubbing brush until completely clean.
2.  Rinse with water and dry it completely.
3.  Soak a clean cloth with white vinegar.  Rub the vinegar over the galvanized metal to remove any remaining dirt and to shine the galvanized metal.
4.  Buff the galvanized metal with a plastic scrubbing pad to help shine the metal
5.  Apply metal polish to the galvanized metal.  Rub it into the metal with a soft cloth.
6.  Buff the metal polish off with a clean cloth.

The only step which they didn't address in this film was how to protect the now-cleaned surface from further oxidation.  A light wax or oil?  Lemon Pledge?  or ?? Smiley
58  Camaro Research Group Discussion / Originality / Re: 772 fans and unstamped fans on: October 12, 2014, 09:19:13 PM
Of course I know what you are referring to.   I wasn't saying to take 'any camaro' and make those tiny changes to make it the fastest one of all..   I'm only saying that there are measureable difference in HP losses with each of those changes, and racers adage 'every little bit helps'.    Taking ALL of the cars produced during a several month period, some will be faster and some slower.. just as you say.   But if you take it to the extreme that you made it sound, no one would ever make any changes to their car because it was either 'fast' .. or 'slow' right out of the factory..  Smiley

PS.  *Everyone* always believes theirs was one of the fast ones..  Smiley

Gary
59  Camaro Research Group Discussion / Originality / Re: 772 fans and unstamped fans on: October 12, 2014, 11:43:23 AM
Steve,

The way I read that section on 1969 7-blade fans, ALL of the switzer supplied fans have the PN/date stamped on the blades, and NONE of the hayes-albion fans have the stamped PN, so the existence of the PN stamp establishes which company supplied the fan, and this is true for either the early pitch or later pitch fans from either company.   My original fan is the 772 fan (stamped and dated) which should then be a switzer.  A year or two ago I bought an unstamped unit at Carlisle which should be an Hayes-Albion.   I should do a comparison of the two to see/notate the design differences.   The most interesting aspect of that discussion, which taught me my 'new fact for the day' was the change in pitch mid-year.  Obviously the earlier fans of either company would load the engine less (2" pitch) AND provide a bit less air thru the radiator (less cooling), so they apparently believed they had 'cooling issues' and redesigned the fan pitch for more air (to cool more), but also more HP loss.   

Note: Kinda makes me think the earlier '69 Z28's might have been a bit faster than later ones given the changes thru the year (fan pitch, additional exhaust restriction on later cars with resonators, etc)...   Was there a period of time between when Z28's had the earlier fan pitch, but transverse muffler (w/o resonators)?? Smiley   Those cars should have been a bit faster right out of the factory.. Smiley
60  Camaro Research Group Discussion / General Discussion / Re: Going to Hershey? on: October 12, 2014, 10:37:32 AM
Does it *always* rain/storm in Pennsylvania on Saturday?  Smiley      TOO many years at Carlisle, we've seen big rains and big winds on Saturday.. Smiley
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