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109194 Posts in 12646 Topics by 4861 Members
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2011  Camaro Research Group Discussion / Decoding/Numbers / Re: 67-68 Z28 Crank Pulley pn 3858533 BJ ? on: February 14, 2013, 11:57:57 AM
Our discussion on the pulley prompted me to call Jack Cooley; I've had his contact information for awhile now, but haven't talked to him until today.  He didn't recall the pulley or doing any machining on it, but the engine was modified when I purchased it (as far as they could go in the stock classes at the time).  Jack told me he is 87 yrs old (on 10 Jan this year), so anything he remembers is great.. Smiley     I had heard that he bought the car from Dickie Hairrel, but he told me that wasn't correct; he bought it direct from Chevrolet (one of the earliest '67 Z28s).   By 1971, he was running under the national record in his 'stock' class (11.6's) with the high revving 302!

Prior to the 67 Z, he raced a '63 Z11 aluminum bodied Chevrolet which he also purchased new from Chevrolet in '63!
 
When I purchased the 302 (short block only) it was 0.030" over, running Forgedtrue pistons (teflon guides in the skirts), Dykes rings, and the pistons were running right to the top of the deck and to the valves - there was light carbon on the top of the pistons, EXCEPT for where the valves opened, and a 1/8" ring around the piston top where it *touched* the head or gasket when TDC!  The deck had been milled to the point that the stamped numbers were gone.  Supposedly the stock crank and rods had had the 'DynaRev' treatment from Hank the Crank (of the Crank Shaft Co) at the time.   The cam was a Lunati, blueprinted to the '67 Z28 specs.  I isntalled 202 valve FI heads and a Tarantula intake and homemade headers in my Henry J..   What I recall is when that engine revved, it sent waves of adrenaline thru my body!  Smiley  I can still feel it.. Smiley
2012  Camaro Research Group Discussion / Restoration / Re: 68 tilt steering column too long on: February 14, 2013, 11:18:55 AM
Guys, I must be missing something (or am just an idiot). I am adding power steering (got the Saginaw gear from a 68 bird). I am trying to install my original tilt column, but it seems nearly an inch too long when I try to line-up the three holes for the the under dash studs. Any one run across this?
Is it possible taht you are attempting to install the under-column brace 'backwards'?   Try rotating it around, so the open end of the brace holes are towards the front and let me know?
2013  Camaro Research Group Discussion / Decoding/Numbers / Re: Single groove 3858533 BJ pulley on: February 14, 2013, 11:03:38 AM
and a photo of the backside...
2014  Camaro Research Group Discussion / Decoding/Numbers / Single groove 3858533 BJ pulley on: February 14, 2013, 11:01:55 AM
That's the correct part number for that application but it should be a two-groove pulley. I suppose somebody trimmed off the outer groove? That's all I can think of. Maybe if you posted a picture or two, that would help in figuring it out.
Hi Jon, I'm attaching a few photos I took this morning.   If it's been machined or modified (other than the chroming), it's not obvious to me.   This pulley was on a '67 302 I bought from Paul Vanderley (NHRA HOF racer/machinist) in late '71 or early '72; the engine came from a '67 Z28 that Paul had purchased from Jack Cooley, who drag raced the Z28 in the late 60's/to about '71 or so.  I don't have a 2-groove version to compare this with, but I'd be very interested in your thoughts if it's possible to machine a 2-groove to this point?   (I had to change to a new topic, as the first time I tried to post this it was 6kb over the 400 limit; and once you hit that, you can't modify and repeat!  Sad
2015  Camaro Research Group Discussion / Decoding/Numbers / 67-68 Z28 Crank Pulley pn 3858533 BJ ? on: February 14, 2013, 01:55:42 AM
I was digging thru some old parts on my shelf today, and pulled out a chrome single groove crank pullley and balancer.   These parts were on a '67 302 I bought in 1971 or 72.   The pulley had been chromed, but is now dirty, greasy, and beginning to surface rust.   I saw a pn on the pulley, so I cleaned it up, and found the number was '3858533 BJ'.   Doing some digging I found this number is associated wtih the '67-68 Z28 and perhaps a few other SHP small block chevy engines in the mid 60's.   The issue is that it is listed as a 2-groove pulley on CRG, but the one I have is a single groove.   Is there any possible explanation for this that I'm not thinking of?
2016  Camaro Research Group Discussion / Originality / Re: 1969 Z/28 motor mounts on: February 14, 2013, 01:39:49 AM
According to Jerry MacNeish in is book, The Definitive 1969 Camaro Z/28-SS396 Fact Book, pp.202, the 69 Camaro motor mounts were P/N-3990518.  These mounts were used in combination with motor mount frame brackets P/N-3945507 and 3945508, which were redesigned for added strength for the 302 and 350 engines.

These frame brackets are on my 69Z but unfortunately, the original motor mounts were replace buy a previous owner during a partial restoration.

I know the above is an old posting, but it seemed to be the latest and most detailed in the archives, and I believe there is an error in the '69 302 mount referenced.   I was investigating some *issues* with motor mounts for my '69 302, after having my headers hit my floor pan.  I changed the motor mounts from the mounts I was using (GM PN 3968700/3962748/3962740/3974735) and Yes, the parts had all these pn's emprinted in the rubber, and bought two parts store mounts, which lowered the engine about 1/2" and helped with the issue of headers hitting floor.   Doing some digging in ebay, I found that various sellers listed the above part numbers (3962748) as being correct for '69 Camaros.  I also found one or two ads for 3990918 pn as being NOS correct for '69 Z28, so I dug out my old 1970 P&A books and found the following:
1969 Chevy, Camaro (302, 350, 396) ...  PN  3990918
1970 Pass (S/W) w/2BC 350                   PN  3968700
1970 Police (454), All (396), Camaro w/Sp.H/Per (350)   PN 3968700
1970 Chevelle w/4BC (400, 454), MC (exc 400 w/4BC, 454), Chevelle (350)  PN 3962740
etc.   also some 70 models  PN 3962748

The McNeish book seems to have had a typo if 3990518 is listed for the '69 z28 mounts (I haven't got my book handy to check that).

If anyone has other or additional information to add to this, I'd love to hear it.   I want to make sure my 302 is sitting at the correct height in my Z28.
2017  Camaro Research Group Discussion / General Discussion / Re: Old pictures of the 1969 Z/28 I owned in the late '70's on: February 13, 2013, 12:01:36 AM
I too owned a Henry J for over 25 yrs, before I sold it to make a garage space for a '60 Corvette I had opportunity to buy.    The Henry had a '57 Chev rear, quarter elliptic suspension, 41 Ford straight axle front, split wishbones front and rear.   and I started with a 283 2bbl/PG... and ended up with a 302+.030 (1967) from a drag race Z28 and Muncie M22..  but never achieved the dreams I had for it.. Smiley
PS.  I'm trying to track down the '67 Z28 body that the 302 engine came from.... unsuccessfully so far.  That drag race Z28 came off the line at 10,200 rpm, shifted at 9800, running 11.6's...  Smiley
2018  Camaro Research Group Discussion / Research Topics & Reports / Re: Earliest 3969341 and Latest 3894860 axles on: February 12, 2013, 11:48:37 PM
My 09C Z28/RS has the 3969341 rear, stamped BU0828

Gary

Gary, is it stamped BU or CBU?  The one Kurt posted had a casting date earlier than yours and it used the 3 letter code.  

I am just trying to see if maybe the casting date change corresponded with the change from 2 letter codes to 3 letter codes.

only 'BU'...  2 letter code..   (see photo attached)
and actually I see that I posted the incorrect date...   BU0829G1 ....
2019  Camaro Research Group Discussion / Decoding/Numbers / Re: 69' 302 CE numbers on: February 12, 2013, 11:39:03 PM
Mike,

From the little I know, it may have varied with the car type/plant..  Either John Z or Bryon Miller will know the answer to this question better than I...
2020  Camaro Research Group Discussion / Decoding/Numbers / Re: 69' 302 CE numbers on: February 11, 2013, 11:35:40 PM
I will Bryon.  I know I've seen/read additional GM letters re the CE marking requirement that originated in Aug/Sept 1967 for 68 amd subsequent models, but I haven't been able to find copies on my current computer.  I think I recall some 'back and forth' letters between the plants on how exactly to implement that order in that same time frame before they got it all ironed out.   I'm sure I saved them on whatever computer I was using at the time...  when I find additional info, I will post it here.
2021  Camaro Research Group Discussion / General Discussion / Re: Media blast paint prep on: February 11, 2013, 12:11:59 PM
that Klean Strip product seems to be in a 'ready to use' form..    is that correct Mike?   The products I've used, Dupont MetalPrep or Jassco, are in a more concentrate form, even though more expensive to purchase, which allows some flexibility in dilution and use.
2022  Camaro Research Group Discussion / General Discussion / Re: DZ engine on ebay on: February 11, 2013, 09:34:53 AM
Smiley  If it IS a 302...  I bet it runs great with that PG automatic.. Smiley
2023  Camaro Research Group Discussion / General Discussion / Re: Old pictures of the 1969 Z/28 I owned in the late '70's on: February 10, 2013, 11:19:34 PM
Pictured are photos of a '70-1/2 Z28 that I owned in the early 80's..  I really liked driving it as it handled better than first gens (IMO).. Smiley     but one winter, while I was in the process of building a large garage building, we had a big snow (for us).. and seeing the car covered in snow prompted me to sell it to a young fella who came by and asked about buying it (at the right time).. wish I hadn't done it now.. Smiley
2024  Camaro Research Group Discussion / General Discussion / Re: Media blast paint prep on: February 10, 2013, 11:04:31 PM
I like to treat bare stripped metal with 'Dupont metalprep' or a similar product, and then rinse, dry, and prime.
2025  Camaro Research Group Discussion / General Discussion / Re: question for Kurt re Photo Limitations? on: February 10, 2013, 11:03:01 PM
OKAY!    Smiley    We'll call that a feature and try to stay away from it.. Smiley
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