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104738 Posts in 12247 Topics by 4719 Members
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2296  Camaro Research Group Discussion / Restoration / Re: steering column on: March 20, 2009, 04:29:30 PM
Dan,

what was the outcome of your solicitation?   Is the 'lock' text on the tilt wheel different or not?  (from the non-tilt wheel?)...
2297  Camaro Research Group Discussion / Originality / Re: Survey - DZ4053 Holley Carb (vented?) on: March 20, 2009, 04:26:49 PM
John,

Are you aware of any reason someone with a 69 Z28 in the early 70's would have 'Added' the vented parts to a 4053 ??
2298  Camaro Research Group Discussion / Originality / Re: 041 Heads VS. 186s on a 302 on: March 20, 2009, 04:24:00 PM
Sorry Steve,  the ones I  have are later than April...   earliest set I have are E15 9.   I also have a set of  June '70's...
I'm looking for a set of late July to August '69 heads.... Smiley
2299  Camaro Research Group Discussion / General Discussion / Re: Which spark plugs are available for original 302's?? on: March 20, 2009, 04:18:50 PM
Champion J-12YC is what I always used when I was driving my car; I never liked AC plugs!   but...  in trying to put my car back in 'production trim', I assumed I would need to use the original plug type...   Are plugs judged or not?
2300  Camaro Research Group Discussion / Maintenance / Re: 69 1111480 distributor on: March 19, 2009, 05:39:30 PM
this thread began with a question about the vacuum advance pod for the 480 distributor.  Reading the thread got me interested in following up and rebuilding my 480 distributor, so I bought a couple of the autozone PN's mentioed, and ordered a GM part (but haven't got it yet).  When I disassembled my distributor, I think it had the original vacuum module on it (see photo below); can someone confirm this is the original?  or at least the original PN?

...  after removal, I compared the spring strength to the new autozone part, and find that the original spring tension is roughly 3-4 X more than the new autozone part...    which concerns me.   Is this normal?  Wouldn't it require a lot more vacuum to affect a timing change wiht a high spring pressure?  What gives?   IS the autozone part I have too 'different'?  Or is there some kind of failure of the original part that could cause this?   Yes, I'm totally confused.  There appears to be a slight bend in the original; could this cause the stronger spring/diaphragm pressure?

I'm posting side by side photos of the two parts below in soliciting your responses and comments...



I would also like to confirm that this is the original advance plate for the 480 distributor; I pulled this distributor from my car in the 70's (it was sloppy) when I rebuilt the engine and used a rev pol distributor; it's been laying under my bench since until I retrieved it to rebuild it.

2301  Camaro Research Group Discussion / Decoding/Numbers / Re: can not find vin number on a DZ block on: March 19, 2009, 12:30:58 AM
I can't read all your numbers (the first one after the N in particular) and you blacked out the last 2..   The last 2 are generally larger fonts than the others... as this was the result of the way they incremented the stamps from car to car... you can see my last two digits (47) are larger font than the remainder of the stamps.    This same characteristic is true on my Trans stamp.   Have you compared your engine VIN stamp to the Trans stamp?  My understanding is that the same gangholder was used to stamp both at the same time (relatively same time anyway)..  Smiley
2302  Camaro Research Group Discussion / General Discussion / Re: Which spark plugs are available for original 302's?? on: March 19, 2009, 12:09:17 AM
Thank you Paul!
2303  Camaro Research Group Discussion / General Discussion / Re: correct steering column bowl on: March 19, 2009, 12:06:36 AM
Hi Dan,

Let me know if these photos help; it appears that the word 'Lock' is oriented differently on tilt columns than for non tilt columns for '69 Camaros (at least on the ones I have)...

Non-tilt original column in my '69 Z28:


Original Tilt column from '69 Camaro (not original to my car, but I believe to be correct):

2304  Camaro Research Group Discussion / Decoding/Numbers / Re: How did Chevy Use the same block for a 350 as a 302 in 1967? on: March 18, 2009, 04:04:47 PM
I think the poster was questioning the 'small journal' '67 302 crankshaft (essentially a 283 crankshaft)...  and the reference to use in a 'large journal' 350 '67 block.

I've always thought of the '67 302 as being a '327 block' and '283 crank'....   '67 327 blocks were 'small journal'.. It would seem one of these possibilities are true:

1)  If '67 350 engines were large journal, then the difference between the 327/302/350 blocks that year is just a machining issue when they machine the main journals?   OR
2)  '67 350 engine blocks were 'small journal' as cast...  OR
3)  Otherwise, it would appear that '67 327 and 350 blocks are not the same.
2305  Camaro Research Group Discussion / General Discussion / Re: Which spark plugs are available for original 302's?? on: March 18, 2009, 02:10:08 PM
In looking at those plugs, which were advertised as '67-68 Z28 plugs.... and a few other ads..  it appears 1969 may have been the first year for Resister plugs.....   and if so, my memory (old).. has failed me again.    Can someone with factual information on original type plugs straighten me out? 
2306  Camaro Research Group Discussion / General Discussion / Which spark plugs are available for original 302's?? on: March 18, 2009, 12:22:41 PM
The '69 Z28 used AC43 (non resistor) plugs originally, but I just tried to buy some at a NAPA store, and R43 was all they had.  And they didn't have solid core spark plug wires..  I'm trying to put my original 302 back 'as original' as I can get it...   so I need some help from people who recently went thru this on which spark plugs, wires, dist cap, etc...  to run..    which work well, and lose fewest points in original class judging...   Is running carbon core (resistor type) wire and resistor plugs an issue?   (I've ran solid core silicone wires for 40 yrs, so I'm not very current on what is best or available..   Smiley
2307  Camaro Research Group Discussion / Decoding/Numbers / Re: can not find vin number on a DZ block on: March 17, 2009, 11:32:30 PM
Can you put up a pix of yours for comparison purposes?   I'd love to see others.
Mine looks clear in that pix because I *removed the engine just to check*, cleaned carefully, was examining with magnifiers, etc... all over it *outside* in bright daylight and still couldn't find it for awhile......  When I found it I was elated, because I'd wondered for years why my front pad didn't have the VIN on it like my friends's '69 Z28...  Anyway, I took pains to get that photo to capture the numbers as clearly as possible, because they are impossible to see with the engine in the car.
ps. I worked as an imaging engineer for 30 yrs developing imaging equipment for missile sensors, and aerial and satellite photo imaging; I learned a few tricks..  Smiley
2308  Camaro Research Group Discussion / Originality / Re: Survey - DZ4053 Holley Carb (vented?) on: March 17, 2009, 11:20:00 PM
Mine is a 982 I think...  Sept car.   It had vented front bowl on it when I bought it in 1976 and it didn't appear to have ever been fooled with (the car was only driven by a 'girl'.. Smiley
The Overhaul manual shows a vented bowl in the service portion for the Holley4150, so I have always believed that to be original???
2309  Camaro Research Group Discussion / Decoding/Numbers / Re: can not find vin number on a DZ block on: March 17, 2009, 02:38:35 PM
If the engine is out of the car (as it appears to be)...  then carefully clean (with solvents).. . NOT mechanically... the oil filter boss, then examine closely with a very bright light from differing angles..   the VIN stamp there could come thru...  It took me forever to *see* mine, but now it appears very obvious to me....??   try scrubbing the area with lacquer thinner and a brass brush...  ?
I am posting a pic below to perhaps help in locating the stamping...
2310  Camaro Research Group Discussion / Originality / Re: 041 Heads VS. 186s on a 302 on: March 17, 2009, 02:05:35 PM
steve,

What dates do you need?  I have some extra '186' heads...
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