Topics

16

Decoding/Numbers / Rear axle codes

« on: July 23, 2009, 05:05:13 AM »

OK, not a 1st gen question but thought I'd tap the knowledge base here.  Looking at a 8.5" 10 bolt axle for the '71 RS/SS I am putting together.  The axle I have found has the following axle tube stamping: "2L 208" . 

CBTN shows "2L" as a legit code for a '71 Camaro with a 3.42:1 open rear axle.  Problem is that I cannot find any other references to support this and confirm its application.  Can anyone here? 

I don't have it here but am relying on someone else to pull the numbers. There's a lot of paint they said and indicated that  it could just as easily be a "ZL" instead of the "2L"...but I can find no reference for "ZL" anywhere.

17

Restoration / Shackles

« on: June 25, 2009, 03:21:07 AM »

In doing some work on my '69 Z/28 I find that my shackles are bent (I believe from an accident long, long ago).  I have several extra sets sitting around which appear to be identical (just not bent).  Is there only one shackle for all 1st gens regardless of configuration (i.e. Z/28, L6, BB, etc.)?  I am referencing PN 3830840 shown on UPC4 page B2 of the AIM.  I have a GM parts catalog from Dec '71 which shows one "repair kit" for the rear shackles on all 67-69 cars...PN 3849248.  Thanks in advance.

PS does anyone know if  Firebirds use the same part or is it different?

18

General Discussion / Block question for JohnZ

« on: April 15, 2009, 12:21:15 AM »

I seem to recall you addressing the little drilled and tapped hole (an plug) just above the timing cover on some small blocks (passenger side).  I have searched but cannot fid the post.  IIRC it had to do with the implementation of a "best practice" at one foundry (or engine plant) and not at another.  Would you mind addressing that again?  Thanks

19

General Discussion / Z/28 rear-end gearing

« on: April 11, 2009, 06:12:07 PM »

Is there any evidence that a Z/28 was built using a gear ratio higher (numerically lower) than 3.73:1? 

This is not to prove that any particular car is genuine or anything like that.  It is a topic that came up in another forum discussion about what was possible  and if possible whether it ever happened.

Just to get it out of the way, I understand completely that a 302 (as built by GM) would not be a "happy camper" with, say, 3.07:1's.

20

Decoding/Numbers / '67 Carb

« on: April 04, 2009, 12:58:53 AM »

I picked up this carb:

Which Colvin identifies as a as a 327/275 (or 295) AT w/AIR, 3rd type.  I'm assuming that this would indicate a CA emissions carb.

1st question:
 Any idea of when the 3rd type was phased in?

The date reads  1420 which I am interpreting as 142nd day of 1970...am I in error here?

2nd question:

If that date is correct then is this a service carb?

Thanks

21

Originality / Is this the correct air cleaner?

« on: September 23, 2008, 05:58:10 PM »

Is this the correct air cleaner for a '67 275 or 295 HP with CA emissions?







If not, any clue what it is for?

22

Decoding/Numbers / restamp?

« on: August 07, 2008, 06:54:24 AM »

Is it?  Looks like it to me but I'm no expert

23

General Discussion / throttle and kickdown linkage question on L-48

« on: August 06, 2008, 03:52:52 PM »

Hello All,

I posted in the restoration area but don't think there is as much traffic as here.  I need to know two things:

1) which of the three holes (at he top of the carb linkage) in the photo below is correct for "sticking" the throttle linkage through?  I can't seem to tell from the AIM

2) is the bolt/tab correct for the kick-down linkage on a TH350?  Is it in the correct location?

Thanks

24

General Discussion / proper torque #'s

« on: August 03, 2008, 05:44:50 PM »

What is the correct torque for the four  bolts that hold the aluminum cover on the PS gear box?  '69 Pontiac shop  manual says 30 ft/lbs, '69 Chevy shop manual doesn't specify.

thanks

25

Restoration / Underhood black

« on: July 01, 2008, 03:49:55 PM »

In order to achieve 60% gloss for those parts needing it does anyone have a recommendation on paint type or mix to achieve this level of gloss black?

A second question...the heater cover box (on the firewall) should it be the same level of gloss as the firewall it self (30% gloss) ? 

26

Restoration / Blast media for aluminum parts

« on: June 27, 2008, 02:49:13 PM »

I have  few alternators and distributors I need to clean up prior to rebuilding...any suggestions for a blast media type (or other method) to clean up but not pit?

27

Originality / Not exactly a 1st gen question for JohnZ (or others)

« on: May 23, 2008, 02:02:45 PM »

A member of the NastyZ28.com forum (2nd gens for those who don't know) recently picked up a fairly well documented 1970 SS350 4 speed car (pretty detailed history, build sheet and matching numbers).  He is sharing a lot of photos of the pieces he is pulling and off and servicing.

one of them was this distributor:


As you can see it is an 1111488 code which should indicate 1969 350CId 300 HP ST usage with a build date of 1969, March 24th.

The car in question is a 1970 SS350 Camaro 4 speed with a build sheet date of May 26th

The question is:
Would it have been possible for the engine plant to install this distributor in this car?
If possible, would it have been likely?

Any other thoughts appreciated.

BTW, it's a really nifty car.  Here is a link to the thread:
http://www.nastyz28.com/forum/showthread.php?t=120144

 

28

Decoding/Numbers / BU 12 bolt date code - HELP!

« on: May 14, 2008, 08:25:26 PM »

I was double checking the date code on this axle (I had always interpreted it as a '68) and my eyes are playing tricks...is it a year code of 8 or 9?

I read it as D 25 8 or 9...large file warning:

29

General Discussion / Zinc additive - any try it?

« on: May 13, 2008, 11:04:41 PM »

Ran across this through another forum.  Any one try either out?  any thoughts or feedback?


http://www.cam-shield.com/

Or this

http://www.zddplus.com/

30

Restoration / Looking for an 1100843 61 amp alternator

« on: May 12, 2008, 04:51:46 PM »

car has an 01D build date so I need to find an alternator that is prior to that (by a reasonable margin) - any help appreciated

thanks