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106632 Posts in 12432 Topics by 4790 Members
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1936  Model Specific Discussions / Trans-Am Camaros / Re: TRACO Fans on: January 16, 2013, 10:17:59 AM
... It was a combination that was well known by Chevy drag racers for many years prior to the '67 Z-28. Going back to the old 283 blocks, you could actually bore them out .125" over to get to a full 4-inch bore and racers were happy to have the extra cubic inches. Vince had long known of that bore/stroke combination and recommended it to Pete Estes because that would put them just under the 5-liter limit of the Trans-Am class and give them a cubic inch advantage over the competition which were only offering 289s and 273s at the time.
back then.... we called those bored 283 engines '301' ci..   the actual displacement is 301.xx something.  Chevy rounded it up to 302.  A friend had one in a 51 Henry J when I was in school!   it was said among the racers that use of a 59 'Canadian block 283 had a bit more metal to allow the 1/8"  overbore without getting too close to the water jackets, but I have no idea if that was true or not.. Smiley    Anyone else ever heard that logic?
Chevy's use of the 327 block and 283 crank gave them an engine closely under the 5 liter limit, and use of the 327 block allowed them to slightly enlarge it to hit the 5 L mark on the head, and have a bit more metal around the water jackets than the old 301 engines.   But to be sure, 302, 302, or 305, they all rev and run like a scared rabbit..  Smiley

Gary / 69Z28-RS
1937  Camaro Research Group Discussion / Decoding/Numbers / Re: Wiper Motor codes....? on: January 16, 2013, 09:38:56 AM
Thanks for the photo, it was good to see the *insides* of the gearbox- I really hate to be ignorant of something and trying to work on it.. Smiley  All your comments are good!   It appears that both the wires are connected to gnd, so it's also helpful to know that.   Something was preventing it from turning... and I could not tell what from what I could see.
What's long? years? that would be too long..   if long is a few months? Maybe..    *G*  I'll email you.
1938  Model Specific Discussions / Trans-Am Camaros / Re: Are these ex-Trans Am Camaros racing at multiple Daytona 24 hour races? on: January 16, 2013, 09:31:38 AM
SMK..  you can satisfy some of the people.. some of the time..  but it's impossible to satisfy everyone all the time.  Personally, I enjoy seeing the photos even if I don't know the driver/race/etc..  Smiley
1939  Camaro Research Group Discussion / Decoding/Numbers / Re: Wiper Motor codes....? on: January 16, 2013, 09:05:59 AM
Your comments are good!  Smiley  .. but I wish I'd known THIS part before trying to get the motor casing off...
“If they are not clean, the only way to remove the motor shell to clean it is to seperate the gear halves by drilling the rivets or bending the triangles. The triangles only have one more bend/flatten cycle on them before they break from fatigue. so get it right the first time “..

I removed the cover and lubricated the top bearing, but the motor still would  not turn.  Either the lower bearing or gears or ?? seemed to be holding it.  I didn't want to separate the gear plates because I believed I'd have to drill out those crimps (per the service manual) and use obvious screws...  I tried to remove the brushes without the wires being removed, and I think I broke something..*possibly the contact board'...  Sad .  I HOPE this part is available...      The way you suggest above seems very doable.   Well.. we live.. and sometimes we learn..  and sometimes the learning comes too late..  Smiley

1940  Camaro Research Group Discussion / Restoration / Re: Firewall insulation plug on: January 16, 2013, 08:55:41 AM
They will 'squeeze' the rubber sufficiently to allow pulling it thru, but will not 'cut' the rubber...
1941  Camaro Research Group Discussion / Decoding/Numbers / Wiper Motor codes....? on: January 16, 2013, 12:22:10 AM
Attached is a photo of the silver sticker on my original  1969 RS wiper motor...

it has the PN (5045605) as well as a second line of codes:    227  9  6  A.
I think/suspect (based on my 09C build date) that the 227 is a Julian date (mid July or thereabouts), the '9' is the year, but I have no idea about the 6 and the A.   

Can anyone provide a better decode of these numbers??


Gary / 69Z28-RS
1942  Camaro Research Group Discussion / General Discussion / Re: Correct date heads on: January 15, 2013, 11:13:33 AM
I don't think 30-45 days in advance of the engine build is 'abnormal', although I haven't seen any specific 'lead times' for heads.   There is always an 'ebb and flow' to the supply chain which causes variations in lead times of various parts at various times.  Note:  even your original heads were 2-3 weeks ahead of the engine casting;  If you only need one head, find a head close in date to the one good one you have which should be less expensive than finding a 'matched' pair; even your original heads didn't have the same date (and probably few do even from the factory)..
1943  Camaro Research Group Discussion / General Discussion / Re: Cylinder heads on: January 14, 2013, 11:36:49 PM
run a 'wanted ad' in TC.....
1944  Camaro Research Group Discussion / Research Topics & Reports / Re: Earliest 3969341 and Latest 3894860 axles on: January 14, 2013, 12:22:18 AM
My 09C Z28/RS has the 3969341 rear, stamped BU0828

1945  Camaro Research Group Discussion / Restoration / Re: Firewall insulation plug on: January 12, 2013, 08:40:11 PM
lubricating the plug might help.   'Wire Ease' is an electrical source 'slippery stuff', which evaporates away.  you might also dip the plug end in go jo.... Smiley

1946  Camaro Research Group Discussion / Maintenance / Re: Wiper Motor Repair on: January 12, 2013, 08:30:39 PM
I appreciate your comments; mine is mostly just has dried up lubricant I believe, as it hasn't been operated in over 35 yrs.   I'm having difficulty removing the motor housing (top is off, but the housing is resisting;  I suspect the brushes are holding it.. so I just need something small to hold the brushes back so the housing comes off.
1947  Camaro Research Group Discussion / General Discussion / Re: 1969 NOS ZL-1 engine possibility ? on: January 12, 2013, 10:43:02 AM
If my memory isn't failing me (again), recalling: from the mid-70's, when I hung around the shop of a Trans/Am racer; he ran a '69 Z28 (he bought new in Dec'68 until the body was too older to run, then switched to a '73 body)...  I remember discussions of a 'new' all aluminum 427 being available for around $10K at that time..  I believe it was in short block, or long block form for that price.. ie. assembled.
1948  Camaro Research Group Discussion / Maintenance / Wiper Motor Repair on: January 12, 2013, 01:30:38 AM
I removed my wiper motor for maintenance and cleaning..  and I've got some questions that hopefully someone can help me with:
1) Is the motor repairable?   Are replacement bearings for the rotor available?  Does anyone provide that service?
2) My car is an RS, so the wiper motor has the vacuum pump works as well.  IS the wiper motor portion the same from an RS to a NON RS car?  ie. Can I use parts from a non RS car to repair my RS wiper motor?   

1949  Camaro Research Group Discussion / General Discussion / Re: Clones, tributes, recreations.. on: January 11, 2013, 04:57:53 PM
You're a 'young, but SMART, 31 yr old'.. Blue..  Smiley
1950  Camaro Research Group Discussion / General Discussion / Re: Clones, tributes, recreations.. on: January 10, 2013, 11:03:30 PM
Are you going to the swap meet in Nashville on the 18-19th?
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