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105862 Posts in 12354 Topics by 4762 Members
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3721  Camaro Research Group Discussion / Originality / Re: 69 Z Engine overspray on: June 25, 2006, 10:32:06 AM
Vacuum-formed plastic masks were used on the aluminum valve covers and intake when the engine was painted, with varying levels of overspray around the edges. The bellhousing was also in place, and generally shows varying levels of paint coverage/overspray on about the front 2"-4", and occasionally some on the clutch fork (the rubber boot was installed later at the car assembly plant). The exhaust manifolds were installed after painting at Flint Engine beginning in 1965 or 1966; big-blocks at Tonawanda had the exhaust manifolds in place when they were painted.
3722  Camaro Research Group Discussion / General Discussion / Re: Anyone know if this is a 327? I have #'s off the block................... on: June 25, 2006, 10:20:49 AM
And would they have put this engine in a Camaro in 1967?

Nope - the block was cast in 1961.
3723  Camaro Research Group Discussion / General Discussion / Re: Will Chevrolet release documentation??? on: June 25, 2006, 10:17:40 AM
There are no records to release; don't hold your breath.  Smiley
3724  Camaro Research Group Discussion / Originality / Re: Correct oil pan drain plug for '68 BB on: June 24, 2006, 12:55:08 PM
Thanks John,   My 69 Camaro has the later style drain plug. I will be looking for the correct one now.

Don't hold me to that (large-head plug on 69's) - I know Corvettes used the 7/8" drain plug at least through '68, but I'm not positive when it changed after that. My original 02D '69 Z/28 has the 9/16" hex plug with the flanged head.
3725  Camaro Research Group Discussion / Decoding/Numbers / Re: Broadcast Sheet Decoding on: June 24, 2006, 12:48:14 PM
You won't find much on a broadcast copy that matches up directly with any RPO sales codes; those blocks simply contain number or alpha codes to identify specific part numbers of individual parts which that particular car required as it went down the line. After 1970 or so, the format changed completely, and it had all the RPO codes printed at the bottom.
3726  Camaro Research Group Discussion / General Discussion / Re: Anyone know if this is a 327? I have #'s off the block................... on: June 24, 2006, 12:41:15 PM
I think if you look closer you'll find that they're 3782461 heads, and that one was cast on May 25, 1965. Those were good heads in the day, and were machined for both 1.94" valves (250 & 300hp) and 2.02" valves (350, 365, 375hp); no way to tell which valves are in them without pulling the heads and measuring them.
3727  Camaro Research Group Discussion / General Discussion / Re: 140 cam, manifolds, and cross ram???? on: June 24, 2006, 12:32:57 PM
The -140 cam SUCKS for a street-driven car, especially with stock manifolds; it was designed for only one thing - running at WOT above 4000 rpm with headers and open exhausts, period. I'd stick with what you have.
3728  Camaro Research Group Discussion / Restoration / Re: Paint first, or mechanicals? on: June 23, 2006, 10:19:11 AM
I think it's a matter of personal preference and time schedules. I prefer to pre-fit everything when the bodywork is done (or in process), then paint it, then do final assembly. This ensures that no fitting requiring drilling, grinding or metal work is necessary when final assembly proceeds, and avoids the necessity of masking off all the chassis parts from overspray when painting an assembled car. Just requires due care during assembly to avoid damaging the paint - that's the way the factory did it.
3729  Camaro Research Group Discussion / Originality / Re: Correct oil pan drain plug for '68 BB on: June 23, 2006, 10:13:26 AM
Did the 69 BB and SB use this drain plug ?

Yes. The later drain plug (smaller 9/16" hex, flanged head) showed up in '70 or '71, I believe.
3730  Camaro Research Group Discussion / General Discussion / Re: big block 350 ?? on: June 23, 2006, 10:09:45 AM
No such thing as a "big-block" 350. Gen I small-blocks got as large as 400 cu. in., and the smallest Mark IV big-block was a 366 tall-deck block, used only in HD trucks (and useless as a performance engine).
3731  Camaro Research Group Discussion / General Discussion / Re: 140 cam, manifolds, and cross ram???? on: June 23, 2006, 10:05:39 AM
john.
since i have to remove the heads anyway, i was thinking of swapping cams while im at it. do you know of another cam that will work better than the stock cam ? considering that im keeping my manifolds and smog.

ive never abeen a fan of the lt1. but people seem to like it. aside from the LT1 cam. what might you suggest? or would you leave it alone?
thanks
aaron

The factory LT-1 cam will produce about 20% more low-to mid-range torque than the "30-30" and gives up very little at high rpm. The beauty of the factory cams (other than the -140) is that they all use the same grocery-getter stock valve springs (3901168) as grandma's 307, and the stock valvetrain is proven bulletproof; no need for "Godzilla" valve springs, no problems with wiped cam lobes.
3732  Camaro Research Group Discussion / General Discussion / Re: Anyone know if this is a 327? I have #'s off the block................... on: June 22, 2006, 10:21:24 AM
Oops - only used in the Chevelle in '65.  Smiley
3733  Camaro Research Group Discussion / General Discussion / Re: 140 cam, manifolds, and cross ram???? on: June 22, 2006, 10:18:43 AM
The cross-ram setups are great for "bling" at cruise-ins, but are very difficult to tune for street use, especially with the -140 cam, and have even less low to mid-range torque than a stock DZ with the "30-30" cam, which doesn't have much to start with. Seems like a LOT of money for "show-off" points, especially with the driveability compromises it brings. To each his own, but I wouldn't bother.
3734  Camaro Research Group Discussion / Maintenance / Re: Wipers Don't Work on: June 21, 2006, 02:47:17 PM
The motor has to be grounded, and so does the switch - the motor works by grounding the circuit through the switch to the lower instrument panel reinforcement. There's a stamped sheet metal ground plate shared by the headlight switch and the wiper switch, with a leg at the bottom that's screwed to the lower reinforcement, and a pigtail wire - if that plate or wire is broken, missing, or has the screw at the bottom missing, the wipers won't work. That plate is shown in the Assembly Manual in UPC 1, sheet B2, View "B", and in UPC 12, Sheet B2.
3735  Camaro Research Group Discussion / Restoration / Re: Information requested please.... on: June 21, 2006, 02:38:10 PM
I assume you're talking about the metering valve (the proportioning valve is down on the subframe); photo below shows my (original) metering valve, with the tab on the mounting bracket below the mounting ear on the (original) master cylinder.
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