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104547 Posts in 12235 Topics by 4716 Members
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1576  Camaro Research Group Discussion / Maintenance / Re: Need advice on new tires? on: April 06, 2013, 10:09:35 AM
a 215/70 has a sidewall height about 9-10 mm taller than a 235x60..  ie. about 0.4 inch higher
1577  Camaro Research Group Discussion / Decoding/Numbers / Re: 1969 Z/28 YH Wheels on: April 06, 2013, 10:06:52 AM
I'm not sure how you tell, but beware...   recently one of the big camaro parts sellers let it slip to me that they have 'restamped' FW wheels to YH wheels; they said the wheels were identical otherwise, although I've always believed there was a difference (else why would Kelsey Hayes have changed the code??).   
1578  Camaro Research Group Discussion / Restoration / Re: Restoring emblems on: April 05, 2013, 02:18:49 PM
I have some new GM Z28 and RS emblems, purchased in 1976, still in their boxes.. never used..  if it would be beneficial to photograph them?
1579  Camaro Research Group Discussion / Originality / Re: Jack Retaining Strap(s) Endura Bumper on: April 05, 2013, 12:04:07 PM
I'm suspecting 'aftermarket', or 'owner custom', as I haven't seen anything like that previously either..  but I don't know for sure.   if someone had something like that and thought it to be original, I'm pretty sure they would have chimed in??
1580  Model Specific Discussions / Trans-Am Camaros / 69 Z/28 SCCA Racers - Hemmings article on: April 05, 2013, 09:46:45 AM
I've mentioned a couple of friends of mine previously in the Trans Am threads (Bob Christiansen and Bob Mitchell), who were both engineers here in the Huntsville, AL area, who each bought new '69 Z28 cars and immediately stripped them down and modified them for SCCA racing.  They ran local, regional, and national races as well as T/A and IMSA (ultimately).   Bob Christiansen bought his off the local dealer lot in Dec  '68 or Jan '69 (a customer ordered it and then didn't pick it up, so he bought it).  His car was orange/black (with black vinyl top).  He installed the OTC 'service duty' differential wtih HD clutch pack posi, big axles, and brakes, and ultimately added HD front spindles and of course a very HD roll cage.   He was an independent racer, mostly self funded wtih some local support, so the cost of racing limited him, but he ran quite a bit in the early seventies, ultimately painting his orange/black car to a 'gray/black' combo using the R.A.C.E.(for Robert A Christiansen Enterprises) logo on it.  Later he upgraded to a '73 Camaro body for later GT IMSA series, and finally went to the smaller displacement cars because they were cheaper to run.   I hung around Bob's shop a lot in the 70's, helping a bit when I could, and learning what I could.   Bob helped me a great deal when I bought my '69 Z28/RS (orange/black) and rebuilt my engine, and even gave me some of his 'first day takeoffs' (like exhaust manifolds, an AD wheel, etc).  Bob C.s Z/28 was sold to fellow racers in the Atlanta area, was raced out of there for awhile, then was sold to an SCCA racer in Chattanooga, TN area.  I never was successful in tracking down the entire car, but did find/buy two sets of his Amer Racing magnesium 8x15 wheels and a 'service duty' disk brake rear end (4.11 rear with HD clutch packs and axles- with extra axles) which I bought from the Atlanta fellas who once owned the car.
Bob Mitchell's car was special ordered I believe since it came with the factory 4-wh Disk Option, and was also orange.  Bob M. ran initially in SCCA, T/A, and ultimately in the smaller displacement IMSA series.  My exposure wtih Bob was that I worked with him a few years in the same organization, and once got to be a 'crew member' at a Road Atlanta race (1977 or so?).  I understand his Z/28 was sold to a fella in the Nashville TN area in the '70's.
I'd been trying to find some old photos of their '69 Z/28 racers without much success until today when I found the Hemmings Muscle Car article which included a couple of great photos of their cars - probably from the '69 SCCA series?  the link is below.  I'd be interested in any comments from guys who remember these cars on the track!

1581  Camaro Research Group Discussion / Restoration / Re: Park Light/Turn Signal Housing - Interior Paint on: April 05, 2013, 08:39:03 AM
My originals appeared to have been 'white', and since it was intended to be reflective, glossy white would be the most reflective...
1582  Camaro Research Group Discussion / Restoration / Re: Restoring emblems on: April 04, 2013, 11:50:50 PM
I've reapplied emblem color using the Testors kits before, and the emblems came out very nice... you can 'puddle' the paint inside the lips, and it smoooths out and glazes when it dries.  I redid my '69 Corvette 'flag emblems' 15 yrs ago, and they still look great.
1583  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: April 04, 2013, 11:44:39 PM
thanks Kurt, and thanks for your encouragement to use the original rails.   It was a long costly process (cost me close to $450) but it wouldn't have 'looked' right otherwise.. Smiley
1584  Camaro Research Group Discussion / Maintenance / Re: Coolant drain and refill on: April 04, 2013, 11:40:14 PM
Just curious:  what was the brand of the 'new one that did NOT work'??
shows to go ya..   sometimes the new stuff is bad too....
1585  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: April 04, 2013, 11:27:37 PM
Yeah, a better word for the 'radiator' would be 'convector', since the cooling is predominatly by convection, rather than radiation.  (Actualy there is conduction/convection heat transfer from the hot fluid to the tube/fins, and then convection/radiation from the fins to the air moving thru the fins)..
For radiation cooling, being flat black would be good, but for convection, I'm not sure 'color' makes a difference... so only issue is if the fins (Cu and Al) need any anti corrosive coating?  but I'm concerned about how the Harrison radiator factory did it..  as I want to match their process as closely as possible...
1586  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: April 04, 2013, 02:43:32 PM
Thanks TModel.. Smiley ..  that's good advice...  and very correct re 'too much paint'.
I am curious whether the fins need any paint at all, of if I should leave them bare..?
1587  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring -Update on: April 04, 2013, 12:01:07 PM
OK, I FINALLY have my radiator back, after a long process of finding the radiator shop in Nashville that would reuse my original core rails, then looking for a more local source to do that same thing.  I finally got information from a core manufacturer, that they would *use* my original rails with some restrictions and requirements, but they would have to go thru a commercial radiator shop.  I then found a more local shop (12 miles away) that would work with me; ie. disassemble the radiator, give me back the parts for cleaning, and then order a '69 Camaro core' (from the supplier I identified) - notating that I would send them my original rails, bead blasted and cleaned.   This all took a few weeks to get the radiator shop an account set up with the core manufacturer, and 2 weeks ago I shipped the rails to Dallas; they installed them on a new core and provided back to the radiator shop on Monday of this week.   Yesterday I picked up my original radiator (UH), re-cored with a new core using my original rails.  See pictures attached to this message.   I asked them not to paint the radiator, as I wanted to do it myself!  Smiley     NOW, I need some recommendations from you guys that have restored radiators before to suggest the best means to prep and paint the radiator!   All suggestions appreciated.  My goal is to duplicate how the factory did this as closely as possible!    I intend to clean with lacquer thinner, and prime?  is a special primer required for the combo brass/aluminum parts?  and then paint with a glossy black to match the factory.  Should be finned part of the radiator be primed and painted also?
ALL suggestions appreciated!~
1588  Camaro Research Group Discussion / Maintenance / Re: Coolant drain and refill on: April 04, 2013, 11:26:01 AM
If the water isn't flowing, and the thermostat isn't impeding the flow, then si there anything else that might be impeding flow?  or... Perhaps your water pump isn't pumping....?
1589  Camaro Research Group Discussion / Originality / Re: 1969 Control Arm Alignment Shims on: April 02, 2013, 11:12:07 PM
Mine also were of the type shown in your bottom photo (the old rusty one).. Smiley
1590  Camaro Research Group Discussion / General Discussion / Re: Charlotte Autofair on: April 01, 2013, 10:43:50 PM
What is the date again?
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