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104566 Posts in 12237 Topics by 4718 Members
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631  Camaro Research Group Discussion / Originality / Re: Starter nose for Z28 starter on: May 02, 2013, 11:54:44 AM
Check this out fellas.


http://www.ebay.com/itm/67-69-Camaro-Z28-302-NOS-GM-Aluminum-Starter-Housing-Assembly-68-Z-28-JL-8-/130900555917?hash=item1e7a47f88d&item=130900555917&pt=Vintage_Car_Truck_Parts_Accessories&vxp=mtr#ht_2591wt_1088
632  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 02, 2013, 10:40:52 AM
I've seen both, but I don't think chevies had grooved ones installed, those were more aftermarket. Just like Lynn said, I have heard it was ok as long as there are no problems with the surface of the rocker socket and the ball face, this information coming from some really old engine builders I knew growing up in Atlanta too.


Gary I would try to keep them matched up. on a side note the set i just got have groovedballs for better lubrication, all SB i have seen prior were not like this - OE or A/M? I can get some pics up later if needed I assume they are A/M 
633  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 02, 2013, 10:34:20 AM
Yes I was. I'm a fanatical solid lifter fan since I was able to sit behind a wheel and drive, especially four speed cars. I was 10 when I got to move my first big tracker and trailer truck for my dad and 12 when I was able to drive a 4 speed hotrod on the road and in traffic (my dad wasn't pleased with those guys who let me). Since then any slight ticking sound coming from the rocker covers, I was in there and still am.

the rockers with the triangle are they also high performance rocker arms ?
That is correct.   Chevy sold them over the counter for many years.
Have compared three different looking "O" sets (litte, big and sideways) with a "V" set side by side with calipers and micrometers, and can find no appreciable difference among any of the four.

Gary.  I always keep ball and rocker in sets.   But... I would not be afraid to use a set that had been mixed.  Just get them really clean, install, and reset your valve lash after initial run in and again in 500 miles (which you were going to do ANY WAY, right?)
634  Camaro Research Group Discussion / Originality / Re: Starter nose for Z28 starter on: May 02, 2013, 10:23:45 AM
Thanks Lynn. I was assuming that the open nose would be fine. All the starters I have were at one time used on Chevy and Pontiac engines the past 30 years as spares. All have an open nose tip and all where either on an automatic or a manual shift car. All I did was switch noses around to Chevy or Pontiac for it's application and install new brushes and install. I do want to get a dedicated starter nose for my Z starter though with the covered tip, but Chevy says discontinued, at least online and the local here in Smyrna. So if anyone has a used one I'll take it.

I am currently using a gear reduction starter and want to continue using it, but if it ever fails I at least have the Z starter to fall back on as a reserve. Can't be too careful, always have to have a 'Plan B'. I am doing the same with my distributor as well. I have a Dave's Smallbody HEI set up to the Z specs specified by members here and on TC that I am using, but I also have the original 480 all done up the same and ready to drop in if I ever run into any trouble. Had that happen once already when the Mallory I was using destroyed the cam and distributor gears. I was only 4 miles away, but what if you were 25 or more?



Gary:

Ideally, on a stick shift car you want the nose closed.  As your clutch wears, all the dust that is created flys around inside the bell housing.  No issue in an auto, but the debris can enter the end of the nose and contribute to wearing out the bushing.  Of course, even with the nose closed, the debris can enter from the other side, so I am not sure how much difference there would be long term in the real world.

Having said that, if you find an open nose that otherwise fits, it will work fine.  That bushing is really easy to replace, and even easier on an open nose starter.   I wouldn't hesitate to use an open nose for now, and keep a look out for the correct nose down the road.  One will turn up.
635  Camaro Research Group Discussion / Originality / Starter nose for Z28 starter on: May 02, 2013, 08:57:41 AM
Hey guys, I posted on this subject at TC but I wanted to touch base with you all here as well. Not even sure I'm allowed to do this on CRG and I find it's more of a request and questions too. Is it neccesary for that tip on the aluminum starter nose to be closed? I found that I have a BOP(driver side installed instead of passenger side) aluminum nose on the Z starter I have. It is for the 153 tooth flywheel and has the straight across mounting bolt holes. It does however have the tip open so you can see the very end of the armature rod where the bearing is. All the spare starter noses I have are open this way. Are these broken or are they built this way? I know I'll have to remove the Pontiac nose for a Chevy nose when I rebuild the starter, so I tried to order one from GMPARTSDIRECT and found they are discontinued. Anyone have one to sell? or can I use the open tip nose?
636  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 02, 2013, 08:38:42 AM
Just out of curiosity, I have heard it's best to keep the same pivot ball to the same rocker. Are there any exceptions or is it a must to get new pivots? Mine are all mixed up in a box, all look fine with no blueing, cracks, galling or score marks. I'm using roller tip stamped steel 1.5's at the moment and probably will continue using them when I finally pull the 350 and install the 302, but what if I did go back to the 'O' rockers?
637  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 02, 2013, 08:00:34 AM
Honestly,don't really know anything about them. Mostly installed on low performance engines. Just a guess though but probably didn't get a process that the 'O' rockers received.
638  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 01, 2013, 10:20:12 PM
Exactly what I have too.



Umm, let's see some O's.....

70 Z/28

72 LT1

11A 69Z small O sideways

Mixture of O's

\

639  Camaro Research Group Discussion / Originality / Re: Spark plug shields on: May 01, 2013, 03:24:17 PM
You couldn't have said it any better brother...I mean Rich. Inquisitive minds want to know. Nice to meet you too sir. I love this place.


Gary I'm Rich good to meet you! I have updated my signature thanks four your help on my Rocker Question and funny I was just looking the other day on the shield information - I think we are all here to help each other Lord knows i need alot  Grin
640  Camaro Research Group Discussion / Originality / Re: Spark plug shields on: May 01, 2013, 12:55:06 PM
Unbelievable. I DID a search and didn't find that post. Great pics. Thanks, uhhh...'your name here' for the help. I just picked up the shields since mine were MIA and didn't want to just install them willy nilly. Mine are just like what shows in the pic of Jon Mello's. I was about to remove the orange paint, but I'm glad I stuck it out and posted my question. Man this is great detail stuff.



641  Camaro Research Group Discussion / Originality / Re: Spark plug shields on: May 01, 2013, 12:50:02 PM
Thanks John. Right there under my nose. I found a pic of member lcmc's Z on ebay and it shows the shields partially so I think I got the idea which was on what side anway.
642  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 01, 2013, 12:46:03 PM
At least that explains why I have a few rockers with the 'O' horizontal, vertical, small and large. Wow. Can I assume they were mixed this way on a given engine?


Chevrolet used 240,000 stamped rocker arms EVERY DAY; it's highly unlikely that there was only one supplier or one set of precision progressive-die tooling.
643  Camaro Research Group Discussion / Originality / Re: 0 rocker arms BIG or small 0 ? differences? on: May 01, 2013, 09:23:23 AM
I found where I read it. If you have Jerry M's revised 4th edition Definitive book on page 26 there is a pic of both versions of the 'O'. It says research shows the 67 Z28 had the larger 'O' than the 68 and the 69.
644  Camaro Research Group Discussion / Originality / Spark plug shields on: May 01, 2013, 03:45:15 AM
Hi guys. Anybody have a decent clear pic of the spark plug wire shields installed on a 69 Z28? I need a pic of both exhaust manifolds for comparison purposes. My set has 2 with brackets spot welded and 2 with the brackets screwed on. Was this the norm or was there a specific position for each shield. There are no other markings except L R on each one and the 69 AIM is unclear, at least to me.
645  Camaro Research Group Discussion / Originality / Re: 1969 Camaro battery on: April 29, 2013, 11:18:30 AM
Hey Dave, what Delco battery are you using? I want to get the side post battery and cables for my 06A. I think the battery is 78-6YR, but not really sure about what cables I need. The 69 AIM has one set of part numbers, but everyone else has a different part number not the same that's in the AIM. I want to get something at some point since the top post in my car is getting old.
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