Here is one example for you......

    http://www.classicmuscle.com/p-49808-327-cover-welded-tab-correct-exc-327l79.aspx

The part number 3970657 should be for a complete assembled short block (This part number was listed in an earlier parts book I have).  The other part numbers for the block shouldn't even be listed if a complete short block assembly was ordered.

The 3970647 is for a fitted block assembly, that is an assembly that includes most everything but the crankshaft.  

Can't understand why they busted out the parts and listed them separately.  Well maybe they listed them separately to run up the bill.  I'm sure the sum total of all the block pieces would be higher than the price of a complete short block.

It does seem that they received a 1969, 4-bolt, 302ci assembly.

KEZ.......check out this link to a GM parts manual dated DEC 1972.  It has the numbers for the various 302 parts.  The initial web page displays two sections....the first section is the illustrations and the second section is the part numbers.  If you have any problem, just post the part numbers and we can look them up for you.

          http://www.chevyinfo.net/?page_id=455
     

Do you know if they provide the inserts that fit in the  head pipes that the donut packing gasket fits around?

Here is their exhaust catalog. The donuts are shown but don't know what I am looking for in the inserts. Sorry...

http://www.drclassic.com/images/catalogs/pdf/Camaro/Exhaust.pdf

Just a side note....I called them once and they stated they really make two different versions of the kit.  One version has the long, one piece, exhaust pipes that go all the way to the rear hangers.  The other version has the shorter exhaust pipes and the resonator eliminators to extend the exhaust pipe out to the hangers (this is the version shown in catalog and will be the version shipped unless noted otherwise).  Don't know whether they still carry the two versions....you might want to give them a call if you are interested in the one piece exhaust pipes.

You can download a digital copy from this link.......

     https://dl.dropbox.com/u/55969979/1968%20CAMARO%20FACTORY%20ASSEMBLY%20MANUAL.pdf

Evaporust isn't supposed to removed paint, so apparently there wasn't much there that wasn't 'integrated' with the rust/dirt...  I don't think GM expected anything to be there after 44 yrs anyway..

If you leave a part in the solution for a minimal length of time it won't remove the paint.  If you leave a part in the solution for two days, as mentioned about the driveshaft,the paint will become very soft and easily removed by wiping or brushing.

This one is from my 1968 Z28....There is a possibility that different years might have different bolt heads.

Bolt Head



Bolt Lengthwise - 1 1/8" by 3/8"



Clamp - up side



Clamp - Down side

Steve....i wondered about the order cut-off date myself.  Don't remember when it was back then.  That's why I was wondering if it might have been for a car that was already in stock.

That sales receipt is sure in good shape for a 45 year old document.  If this document is the real deal, I would think that is a sales receipt for a new vehicle in stock....there is a stock number already assigned to the vehicle and the VIN is already available.  This receipt could be one that was written for a particular vehicle and the buyer changed his mind and purchased another one.....might account for the fact that the document wasn't signed.  The buyer then might have received both receipts and the wrong one was kept.

The POP is also dated 8/7/1968, so that would be only be a little over a week from the day the sales receipt was written....To short a time to order one and receive it.  They might have found one from another dealer that the buyer liked and purchased that one.

Just my two pennies.....

In 1969 (for the N10 exhaust), both the Z28 and L48 had 2.25" head pipes EXCEPT where they attached to the exhaust manifolds. That "connection point" was 2" but I'm not sure how far that 2" pipe extended down until it turned into 2.25". The "over the axle" pipes were also 2.25", but the tail pipes were 2".

For NC8, the Z28 headpipes were 2.25" in diameter EXCEPT where they attached to the exhaust manifolds. Again, that "Connection point" was 2" like the N10, and again, I don't know how far down it extended until it turned into 2.25". The short "over the axle" pipes were 2" after that first chambered section and then the tailpipes were also 2".

Steve, take a look at page 109 in Jerry's "The Definitive 1969 Camaro Z28-SS396 Fact Book" and you'll see a shipper of a April, 1969 Z28 with the NC8 option.

Ed

I think Ed covers this....2" at the end connection point  (the connection to the exhaust pipe on one side and the heat valve on the other side) that increases to 2 1/4" from about one or two inches below the connection all the way to the muffler.

This block was certified original by Jerry M. What I don't understand is, why are the numbers crooked. The 4 and the 5 are hanging down lower on the end. Were not all of these stamps done with a gang holder?? Why are they not lined up straight even across? ... Danny

         
   Here it is on eBay       http://cgi.ebay.com/ebaymotors/Frame-off-restoration-on-a-fully-original-z28-with-documentation-/300943817633?_trksid=p3984.m1423.l2649&ssPageName=STRK:MEWAX:IT&forcev4exp=true
 

Danny....here is my 1968 Z28 MO numbers for comparison.  Mine is very close to the one you posted about.  BTW....the last two numbers of my serial number should be "99" but the last 9 does not show very well.

     

Good questions.....no answers, but I do have set of them hanging in my storage that I bought in 1974.  Maybe they will be worth a mint someday

If you want it to look original, here is a GM service replacement.....

     http://www.classicmuscle.com/p-5568-302-gm-replacement-part.aspx

My July 1969 Camaro Master Parts Catalog shows this:

     2.363  Clamp Unit, Ignition Timer Distributor
     -----------------------------------------------------------

               1     3772532     1967/8  CYL
               1     3704912     1968-69/8  CYL

A 2-15-69 P&A 34 shows:

               1     3772532     64-67 All 8 CYL
               1     3704912     68     All 8 CYL

Where on the BB cover is the date stamped? I'd like to look at mine.

Thanks,
Mike

Mike.....can't say about the big block covers but if they are like the small block covers, you can only see the dates with the harmonic balancer pulled.  The best way is to have it removed, cleaned, and on the bench.