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97237 Posts in 11693 Topics by 4578 Members
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3736  Camaro Research Group Discussion / Originality / Re: 041 / 041x heads 1969 350 on: March 23, 2006, 03:03:18 PM
A friend who has spent his entire career at the Saginaw foundry says the "X" is meaningless - just a foundry marker - on all small-block heads except the 461's, where the 461X had a 15cc larger intake port.
3737  Camaro Research Group Discussion / Originality / Re: 69 Camaro console and dash housing X77 on: March 23, 2006, 02:55:11 PM
With a green interior, the console should also be green - matches the carpet/seats/doors etc.
3738  Camaro Research Group Discussion / Decoding/Numbers / Re: 12 BOLT DATE CODES on: March 23, 2006, 02:50:58 PM
The casting date only refers to the date the iron center section was poured at the foundry; the stamped date on the RH axle tube is the date the axle assembly was completed (tubes, brakes, diff, etc.). Generally, the axle assembly date will be within 1-6 weeks after the casting date, but there are exceptions. The only "rule" is that the stamped assembly date must be after the center section casting date.
3739  Camaro Research Group Discussion / General Discussion / Re: Blue Paint Mark on Steering Column on: March 22, 2006, 12:51:40 PM
Probably from a random-sample inspection at Saginaw; my '69 is an untouched original, and doesn't have any blue marking on it.
3740  Camaro Research Group Discussion / General Discussion / Re: Vinyl or Not? on: March 22, 2006, 12:46:35 PM
Use the standard "Reply" button (not the "quick reply"), and use the "Additional Options" feature below the box you type in; that will upload the image from your computer and place it in your post; copy-and-paste won't work - the image has to be uploaded first, and that feature does it.
3741  Camaro Research Group Discussion / Originality / Re: SS350 Ignition Coil Code on: March 21, 2006, 11:24:18 AM
The A.I.M. shows the 270 coil assembly for all ZL2 usages; its bracket tilts it back out of the way of the air cleaner base.
3742  Camaro Research Group Discussion / General Discussion / Re: Headlight switch knob removal and switch testing on: March 18, 2006, 12:30:28 PM
There's a small spring-loaded plunger protruding from the metal portion of the switch; hold that little plunger down and pull the knob, and the knob and shaft will come right out. There's a self-resetting thermal circuit breaker inside the switch that reacts to a dead short in the headlight circuit so you don't lose the headlights completely - it cycles them on and off instead (that's why there's no fuse for the headlights).
3743  Camaro Research Group Discussion / Originality / Re: 69 L48 (SS350) - 2 or 4 bolt mains? on: March 17, 2006, 01:30:22 PM
Kurt, the L48 350/300 used in the '69 Corvettes (base engine) used the 3932386 (early), 3956618 (mid-year), and 3970010 (late) blocks, and all were 4-bolts. From then on, they used the 010 block for all 350 applications thru 1979, and starting in '71 the base versions were 2-bolts and the optional versions were 4-bolts.
3744  Camaro Research Group Discussion / Maintenance / Re: fuel pump gasket is leaking oil on: March 14, 2006, 11:40:35 AM
First, make sure you know where the oil is really coming from; I see lots of cars that don't have the bolt in the top front boss right around the corner from the fuel pump on the front of the block, and leakage from there coats the fuel pump. If that bolt is missing, it takes a 3/8"-16 x 1/2" bolt with thread sealer on it.
3745  Camaro Research Group Discussion / Decoding/Numbers / Re: My Mystery '67 Camaro on: March 14, 2006, 11:23:01 AM
Nope, no "Marti report" info is available for GM cars, other than the numbers on those we have in the CRG database. Yes, there are fake cowl tags out there by the hundreds - we see them every day on eBay and other on-line-advertised cars.

Let's boil this down - the car has no VIN plate on the door jamb at all (just rivet holes?). The 7L160971 is stamped adjacent to the heater opening. Where exactly is the 124378N430775 VIN located? Is there a VIN "window" in the upper instrument panel just behind the windshield opening? Is there anything in it?
3746  Camaro Research Group Discussion / Mild Modifications / Re: Drum to Disc conversion 68 camaro on: March 13, 2006, 12:13:15 PM
There's lots of info on disc brake conversions on David Pozzi's site - www.pozziracing.com .
3747  Camaro Research Group Discussion / Originality / Re: VIN plate color on: March 13, 2006, 12:09:23 PM
John,
Am I reading your post correctly.The VIN was painted interior color someplace else and then installed after the dash was painted?

Yes, in a Fisher/Chevrolet plant like Norwood - the upper dash was painted in the main Fisher Body paint shop, and the VIN plate wasn't installed until about three shifts later in the Chevrolet plant.
3748  Camaro Research Group Discussion / Decoding/Numbers / Re: My Mystery '67 Camaro on: March 13, 2006, 12:02:46 PM
The K22R is a Fisher Body "run number" for that panel - says it was stamped at Kalamazoo during the 22nd week of production. A vertical rectangular opening in the firewall says it's an A/C panel. You can be pretty sure that the VIN derivative stamped adjacent to the heater opening is the original, as that panel is seldom replaced.
3749  Camaro Research Group Discussion / Decoding/Numbers / Re: How early was carb date vs. build date of car? on: March 13, 2006, 11:57:02 AM
Carbs were typically dated 2-6 weeks prior to the car's final assembly date. I don't know about Camaro originality judging, but the NCRS allows full judging credit for dated components up to six months prior to a Corvette's final assembly date.
3750  Camaro Research Group Discussion / Originality / Re: 1969 z/28 x-77 trunk mat on: March 12, 2006, 12:35:24 PM
Z87 also included the deluxe seats (Comfortweave vinyl or Houndstooth fabric), and deluxe door and quarter trim panels. A previous owner must have added the hood pad and trunk mat.
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