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97138 Posts in 11686 Topics by 4578 Members
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3841  Camaro Research Group Discussion / General Discussion / Re: 1968 Z-28 on: January 20, 2006, 11:15:23 AM
It probably got a 327 as a replacement because they were very common, inexpensive, and plentiful (millions of them were made). "Real" '68 302's are difficult to find, although thousands have been "created"; there's nothing special about the block, but the 3"-stroke large-journal cranks are hard to find.
3842  Camaro Research Group Discussion / Originality / Re: Cruise control? on: January 19, 2006, 01:25:30 PM
Nope, it wasn't available from the factory - only as a dealer-installed accessory.
3843  Camaro Research Group Discussion / Maintenance / Re: What octane should I put in my '68 ?? on: January 16, 2006, 11:19:14 AM
91 octane should work fine. Your friend's advice is well-meaning, but he's misinformed; retarding timing will just make it run hotter. Make sure your vacuum advance can is working, and it's connected to full manifold vacuum, not "ported" vacuum, so it's fully-deployed at idle, for idle stability and good idle cooling. Don't "top off" the radiator - it'll just keep "puking" the excess coolant; the radiator must allow space for coolant expansion, which is why there's a "full cold" mark on the side tank about 3" down from the radiator cap. When it doesn't "puke" any more, leave it alone - that's its "happy level". Running colder plugs will just make it more likely to foul plugs around town; for normal driving, AC 45's or equivalent heat range in other plugs works fine - 43's or 44's will usually foul in around-town driving. Forget the additives - they don't do anything but eat the plating off the inside of your float bowl, and you don't need them unless you're pulling a trailer all day long at 100 mph.
3844  Camaro Research Group Discussion / Restoration / Re: Front Sheet Metal Paint/Assembly Sequence on: January 16, 2006, 11:07:56 AM
Doors first! Establishing the gap/flush to the quarter and rocker is critical to the eventual fit of the fenders. Remember to fit the rear of the door a tad high to the quarter to compensate for the later added weight of the door glass, hardware, and trim.  Smiley
3845  Camaro Research Group Discussion / Restoration / Re: Front Sheet Metal Paint/Assembly Sequence on: January 15, 2006, 12:05:16 PM

Also, if the fenders are painted off the car, should the inner fenderwells be bolted to the fenders prior to installing them?  I did a test install of the fenderwells first, then the fenders and it was a little tricky getting the fenders mounted.  I wonder how it was done at the factory.

After the fenders were painted body color and conveyed to the sheet metal assembly area, the inner fenders (which had previously been black dip-primed) were attached to the fenders, then the front sheet metal was assembled (fenders, header, rad support, center hood latch support, headlights, horns, etc.). The hood was installed after the front sheet metal was assembled to the body.
3846  Camaro Research Group Discussion / General Discussion / Re: 2009 Camaro Pictures on: January 15, 2006, 11:51:13 AM
The dealer is trying to "impress you" - the dealers know absolutely nothing about the car, it's not an approved program, no objectives, dates or prices have been set, and it's simply a concept at this point to gauge public reaction.  Smiley
3847  Camaro Research Group Discussion / Restoration / Re: Breaking in a motor on: January 14, 2006, 12:33:27 PM
Treat it reasonably well for the first couple of hundred miles, with varying speeds and loads, avoiding long stretches of constant high speed like freeway travel. Assuming you changed the oil and filter after first-fire and cam break-in, change it again after 100 miles, then at 500 miles, then at normal change intervals. With true 1.5 rockers, lash it at .030".  Smiley
3848  Camaro Research Group Discussion / General Discussion / Re: how many 1969 RS/SS combinations were built on: January 14, 2006, 12:23:28 PM
Although records were kept for individual options, colors, and trims, none were kept for the thousands of possible combinations and permutations of all those items. You just have to extrapolate from the individual percentages to get a ball-park estimate.
3849  Camaro Research Group Discussion / Originality / Re: Date codes for engine accessories on: January 13, 2006, 11:04:01 AM
The only accessory item installed at the engine plant was the distributor - everything else was installed on the engine dress line at the car assembly plants. There's a detailed listing of all those items in the Engine Dress Line section of my "First-Generation Camaro Assembly Process" paper on the main CRG site - click on the "CRG Reports" button at the top of the page and you'll see it listed.  Smiley
3850  Camaro Research Group Discussion / Decoding/Numbers / Re: 302 Block ? on: January 13, 2006, 10:56:16 AM
LET'S START FROM THE BEGINNING.  YOU HAVE A COWL TAG DESIGNATING 1ST WEEK OF DECEMBER BUILD (12A) AND A NORWOOD SEQUENCE OF 130231.  YOUR VIN IS 9N685148.  1969 WAS A LONG PRODUCTION YEAR WITH BUILDS IN DEC. 68 AND DEC 69.

Nope - the last '69 build week was 11A (November), and his 12A tag doesn't belong on that car - it's been swapped from a December '68-built car.

Please turn off your Caps Lock key - makes your post hard to read, and caps are considered as "shouting".
3851  Camaro Research Group Discussion / General Discussion / Re: end of assembly inspection on: January 12, 2006, 11:24:02 AM
If an engine problem was noted during the roll-test, the car would go to Heavy Repair, on a hoist, and the engine would be pulled, stripped of dress components, and sent back to the engine plant for credit; no internal engine repairs were permitted in the assembly plants. A fresh engine would be run down the engine dress line, VIN-stamped to match the car, delivered to Heavy Repair, and would be installed in the car. The car would then be re-inspected, re-roll-tested, and shipped. A good Heavy Repairman could do a complete engine change in about three hours.

Nearly a thousand cars a day went through the plant, and there wasn't time, space, or manpower to deal with time-consuming engine teardowns or repairs, and the engine plants wouldn't allow it; they were responsible for engine warranty, and didn't want anyone but their own people inside the engine, at their own plant.
3852  Camaro Research Group Discussion / Maintenance / Re: NEED HELP PLEASE "Fuse Block 1968" on: January 09, 2006, 01:06:13 PM
I THINK this photo is of a '68 fuse block (the '69 has the upper wiper and heater fuses reversed from this one); if you have no power in the center power takeoff cavities (Batt, Ign, Acc), I suspect you have a broken buss bar inside the fuse block (probably corrosion).
3853  Camaro Research Group Discussion / General Discussion / Re: Rear Seat Removal on: January 09, 2006, 12:49:30 PM
The rear seat cushion is retained only by the "hooks" on the floor pan at the front; just push rearward and up at the same time on the bottom of the cushion frame and it will disengage from the "hooks" and pull right out.
3854  Camaro Research Group Discussion / Maintenance / Re: Q-Jet swap problem on: January 08, 2006, 03:28:22 PM
The original configuration on intakes with the "hot-slot" had the gasket on the manifold, then the stainless baffle, then the carb; was used on many '66-'69 iron-intake combinations.
3855  Camaro Research Group Discussion / Restoration / Re: 302 heads on: January 08, 2006, 03:19:38 PM
None of my references show a production application for 3714482 heads, which leads me to believe they're service-only castings; all I show on them is '62-'67 327 usage with 1.72" intakes and 1.5" exhausts with no bolt holes, and those early heads with small valves usually had the small ports as well.
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