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107587 Posts in 12510 Topics by 4812 Members
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3781  Camaro Research Group Discussion / Decoding/Numbers / Re: 1969 z/28 clutch pressure plate on: June 18, 2006, 07:00:10 PM
Chances are slim to none that it still has the original GM clutch in it, and the aftermarket clutch manufacturers all have their own methods of marking pressure plates and discs.
3782  Camaro Research Group Discussion / Decoding/Numbers / Re: Date codes on horns?? on: June 18, 2006, 06:57:55 PM
The format is YMW (year-month-week); 7C2 would be 1967, March, 2nd week. The date code is on the bottom side, adjacent to one corner of the trumpet opening.
3783  Camaro Research Group Discussion / General Discussion / Re: Anyone know what a factory 427 goes for nowadays? on: June 18, 2006, 06:50:35 PM
There were several at Bloomington this week that illustrate the range - a complete but used 2-bolt '66 427/390 lo-perf short block (no heads) for $5,500.00, and a freshly rebuilt 4-bolt '66 427/425 hi-perf short block (no heads) for $15,900.00. Most fit somewhere in that range, depending on many variables.
3784  Camaro Research Group Discussion / General Discussion / Re: Anyone know if this is a 327? I have #'s off the block................... on: June 18, 2006, 06:45:16 PM
Three things are needed to positively ID the engine:

1. The raised casting number (that's the 3789817 you posted).

2. The raised casting date code (about six inches to the passenger side of the distributor hole).

3. Everything that's stamped on the machined surface of the block directly in front of the passenger side cylinder head.
3785  Camaro Research Group Discussion / General Discussion / Re: 15" 1969 Z/28 tires on: June 17, 2006, 08:44:48 AM
Coker now makes the Firestone Sport Car 200 in E70-15 too - $211.00 each.

http://www.coker.com/store/customer/product.php?productid=17855&cat=&page=1
3786  Camaro Research Group Discussion / Decoding/Numbers / Re: part #'s for wheel cylinders on: June 16, 2006, 08:47:15 AM
Casting numbers identify a particular raw casting; that raw casting is frequently machined into several slightly different finished parts, which carry unique PART numbers. One example is cylinder heads - the same casting was frequently machined both for 1.94"/1.5" valves and for 2.02"/1.6" valves, and those two variations carried different PART numbers after machining, although both types carry the same cast-in casting number. The P&A parts books show the finished PART number, and sometimes reference an "I.D." number, which is the casting number that appears on the part. PART numbers don't appear on castings, unless a casting was only machined into one finished part.

To carry the analogy further, a machined cylinder head that's bare (no valves, springs, etc.) will carry one PART number, and the same head assembled (with valves, springs, etc.) will carry yet another different PART number, although the machined casting is the same between the two.
3787  Camaro Research Group Discussion / General Discussion / Re: Can a Saginaw 4 speed be built to handle Big Block horse power? on: June 16, 2006, 08:36:44 AM
The Muncie M20 has a 2.52 or 2.56 1st gear (depending on year), and the M21 and M22 have a 2.20 1st gear.  Smiley
3788  Camaro Research Group Discussion / Restoration / Re: Correct Seat Belt Color on: June 14, 2006, 08:38:39 PM
Thanks again John. So no matter what color interior you had, unless you ordered deluxe belts, you got black?

Yup - my '69Z has the original Z87deluxe midnight green interior, and the original seat and shoulder belts - standard black.
3789  Camaro Research Group Discussion / Originality / Re: disc brake rotors on: June 14, 2006, 08:32:14 PM
While we are on this subject, can anyone tell me if the two-piece rotors were actually outlawed?  Steve

2-piece rotors were never "outlawed"; that's some kind of "urban legend". There are lots of cars out there today with 2-piece rotors, all of them very high-priced.
3790  Camaro Research Group Discussion / General Discussion / Re: '70 Camaro question for JohnZ on: June 14, 2006, 08:25:10 PM
Every plant built either Pilot or Pre-Production units - Pilots were months before launch, Pre-Production units were weeks before launch. Don't know anything about 2nd-gen records, although I wish I still had the '70 Z/28 I bought brand new in early 1970 - ran like a scalded dog!  Grin
3791  Camaro Research Group Discussion / General Discussion / Re: Can a Saginaw 4 speed be built to handle Big Block horse power? on: June 14, 2006, 08:17:24 PM
Don't even THINK about putting a Saginaw behind a big-block; durability doesn't come cheap - get a '66-up Muncie with a 1" countershaft.
3792  Camaro Research Group Discussion / General Discussion / Re: 1967 Camaro with starter problem on: June 14, 2006, 08:14:42 PM
The purple wire from the ignition switch goes to the "S" terminal on the solenoid to energize the starter; somewhere that circuit has high resistance and isn't delivering a full 12 volts to the "S" terminal. If it's an automatic, check the contacts in the neutral safety switch. If it's a manual OR an automatic, check the terminals in the inboard multiple connector on the engine compartment side of the fuse block for the purple wire. There are no thermal switches in that circuit - it just runs from the back of the ignition switch, through the fuse block connectors, to the solenoid.
3793  Camaro Research Group Discussion / Restoration / Re: starter soleniod cover color on: June 13, 2006, 09:42:22 AM
Don't know for sure - there were variations in the brown color and texture; I doubt if anyone can say conclusively that any one appearance is "correct" to the exclusion of others.
3794  Camaro Research Group Discussion / Restoration / Re: Correct Seat Belt Color on: June 13, 2006, 09:36:57 AM
Unless it was ordered specifically with deluxe belts (which were a stand-alone option and weren't part of any other interior package), it would have black standard seat/shoulder belts.
3795  Camaro Research Group Discussion / Decoding/Numbers / Re: Drive Train Date Codes vs. Body build date. on: June 13, 2006, 09:27:01 AM
Trans isn't original to the car. Re-check the casting date - "8 H 28" doesn't make sense.
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