And a question I'm wondering if someone can figure out the answer...

Alternator brackets.

Engine #1, flat steel bracket

Engine #2, stamped steel bracket

Engine #3, flat steel bracket

Engine #4, stamped steel bracket

Body style change, which makes the exhaust manifold change, they use a different upper bracket? #1 and #3 appear to be B body according to the lower alternator bracket, #2 appears to be Chevelle. (Which really makes no sense because even though the lower bracket is different on B body vs. A body, the upper bracket could remain the same couldn't it?)

#1 has A/C, #2 and #3 don't, can't tell about #4 but that shouldn't matter anyway.

The first 3 appear to be California emission with the smog pumps, but that shouldn't matter and they don't all have the same bracket anyway.

No power steering on #3 but that shouldn't matter anyway.

73SC wrote:

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On exhaust manifolds, I have know that in this era they were often painted with engine paint since forever, if you never had or saw a new car it would be one of those things that might elude your eye since the paint burns off fairly quickly and I have had many cars where remnants of engine colour are visible near the flange and the heads, both Pontiac and Chevrolet engines. Often the entire manifold wasn't painted  but oversprayed during production process. Many sales brochures show the engines with painted manifolds too. 

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 THAT IS WHAT YOU CALL ORIGINAL, TRY RESTORING YOUR CAR NOW AND PAINTING THE MANIFOLDS,

CARB BASE, COIL BOTTOM DIST ETC. ORANGE OVERSPRAY AND SEE THE REACTION AND COMENTS 

YOU GET AT CAR SHOW. 

 

OURWAGON wrote:

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73SC wrote:

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On exhaust manifolds, I have know that in this era they were often painted with engine paint since forever, if you never had or saw a new car it would be one of those things that might elude your eye since the paint burns off fairly quickly and I have had many cars where remnants of engine colour are visible near the flange and the heads, both Pontiac and Chevrolet engines. Often the entire manifold wasn't painted  but oversprayed during production process. Many sales brochures show the engines with painted manifolds too. 

---

 THAT IS WHAT YOU CALL ORIGINAL, TRY RESTORING YOUR CAR NOW AND PAINTING THE MANIFOLDS,

CARB BASE, COIL BOTTOM DIST ETC. ORANGE OVERSPRAY AND SEE THE REACTION AND COMENTS 

YOU GET AT CAR SHOW. 

 

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 The Corvette boys do it, sure fire way to get 100 points!

But the pulleys are the wrong colour in the brochure. Talk about inconsistent!

This 66 Brochure is gettig closer to what we see on the line photo...

 

There are smog pumps on some of the motors.  I would say these are 1968's based on the oil fill tube and fill cap style

 

Here are 1959 shots from Life mag,  same manifolds

note all the TURBOGLIDE flywheels!  those turboglides were popular in 58 59!

-- Edited by beaumontguru on Friday 20th of November 2020 12:17:26 AM

beaumontguru wrote:

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There are smog pumps on some of the motors.  I would say these are 1968's based on the oil fill tube and fill cap style

 

 

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 You're right, they have to be. 67 still had the breather in the filler cap, 68 was in the valve cover.

gee, you are right.  now i am leaning toward 1967 truck, but the oil fill cap tells me 68,  but wait.........its got smog emissions, so maybe that is a correct closed pcv system.  Im changing my response to 1967.   the alternator brackets are 67,  and no accessory bolts in heads, so 67 it is!

I bet these pictures are from California. California had much stricter emissions rules in the late sixties. I remember a 67 Chevy van with a six and it had an AIR pump and a sealed oil cap on it. It was imported from California.

Paul

Yes Calif would be closed oil cap. 62 to 65 had earlier cap. Look up a 65 l79 to see the early closed system. California used the closed system with or without smog pump.

No the 67 68 only has 2 ears. Early ones have 4.

Interesting details. I've never seen a painted orange exhaust manifold; now I know why.