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Author Topic: 69 camaro 327 exhaust manifold #'s needed  (Read 13034 times)
GS STAGE 1
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« on: August 06, 2006, 06:31:16 PM »

Hello, Im looking for the correct exhaust manifold part #'s for a 69 327 With A/C, turbo 350
Any help appreciated




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rich69rs
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« Reply #1 on: August 06, 2006, 06:43:44 PM »

Chevrolet by the Numbers 1965-69; pp 218 and 220:

1969 Camaro 327/210 hp, 307/200 hp, or 350/250, 255, 300 hp engines w/auto transmission and no A.I.R.;

LH side p/n:  3942529
RH side p/n:  3932376

These manifolds were also used in 1969 on Chevelle and Chevy II 307 and 350 engines with auto tranny and no A.I.R.
« Last Edit: August 06, 2006, 06:48:11 PM by rich69rs » Logged

Richard Thomas
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« Reply #2 on: August 06, 2006, 06:59:51 PM »

I too have that book as well as Cars and Parts 55-93 casting #'s. Unfortuanetly it doesn't list anything with A/C, although other years list different part #'s for With A/c or Without.
Because this is an early car 11D, is it possible this info wasn't listed? They do list the 307 mani's
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« Reply #3 on: August 06, 2006, 07:05:03 PM »

I don't believe air conditioning had any impact on the exhaust manifold for the base 327 engine.  Only other part numbers that I know that were used on 327/210 hp Camaro in 1969 are:

LH 3942527 and RH 3946826. 

The "527" and "826" manifolds are shown as correct for all manual transmission, with A.I.R., small block Camaro applications for 1969 including the 302 Z28 engine.  These manifolds have A.I.R. drilled and tapped connections.  If A.I.R was not used, the ports were plugged.  (See JohnZ's comment below.) 

From personal experience, I removed a set of the "527" and "826" manifolds from a 69 327 base coupe that had a 3 speed manual and no A.I.R.  The manifolds were required because of the 3 speed manual trannsmission.  A.I.R had been removed so the ports were plugged.  (See KurtS and JohnZ's comments below.) This "527" manifold is currently on my car. 

In 1969 Camaro SB applications, there is a distinct difference in the RH manifolds between a standard transmission ("826" manifold) and an auto transmission ("376" manifold).   The "376" manifold incorporates a heat stove, is wider, with the heat stove riveted to it.  (The "826" manifold for standard transmission cars does not have the heat stove, since the Thermac / heat stove was an emmission system only applicable to an auto tran setup.)

I believe the manifolds you need are the "529" and the "376" manifolds.

Attached pic shows the "527" manifold on my engine.  Since the only fundamental difference between it and the correct "529" manifold is the A.I.R. ports, I decided to go ahead and use it.  The A.I.R. ports and hex plugs are clearly visible. 

I will also post a pic of the RH side of my engine with the "376" manifold and heat stove.

« Last Edit: August 07, 2006, 01:27:56 PM by rich69rs » Logged

Richard Thomas
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« Reply #4 on: August 06, 2006, 07:40:19 PM »

Great info Rich.
interesting enough, the Left manifold # is 3942528, which I couldn't find. The right mani, is an incorrect 80's style with reinforcment bars
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rich69rs
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« Reply #5 on: August 06, 2006, 07:43:52 PM »

RH side showing "376" manifold - no A.I.R. connections - heat stove visible.
« Last Edit: August 06, 2006, 07:46:35 PM by rich69rs » Logged

Richard Thomas
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« Reply #6 on: August 06, 2006, 08:36:40 PM »

Thanks Rich, these are great reference picture's. I guess I could be wrong about the 528, although it sure looks like an 8.
In anycase, you've given me the information I need to find the correct RH mani, and I appreciate it.

Here's a picture of the left. The motor here is a 350 I put in it to move it around, as the original 327 cylinders were full of water. the machine shop had to take it to .030 just to clean it up.

I also added a picture of my $250 score, it was purchased sight unseen through a for sale sign on a 69 mercury cougar 1/4 window @ the long beach swap meet in california. a/c, disc brake car

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« Reply #7 on: August 06, 2006, 09:29:34 PM »

$250 swap meet special
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GS STAGE 1
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« Reply #8 on: August 06, 2006, 09:40:21 PM »

pic 2
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GS STAGE 1
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« Reply #9 on: August 06, 2006, 09:42:27 PM »

The owner didn't even know what engine it had Roll Eyes
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« Reply #10 on: August 06, 2006, 09:44:01 PM »

dirty, but scarless interior
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rich69rs
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« Reply #11 on: August 06, 2006, 10:55:35 PM »

What a deal!  Your $250 score is one of the best deals I've heard of.  Regardless of what you decide to do with the car, you can't beat the initial investment cost.

With regard to your LH manifold, I'll bet the "8" is a "9" in which case your LH manifold is p/n: 3942529 which, according to the references, would be correct for 1969 Camaro 307/327 with auto tranny.

Richard
« Last Edit: August 06, 2006, 10:59:24 PM by rich69rs » Logged

Richard Thomas
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« Reply #12 on: August 06, 2006, 11:22:22 PM »

The A.I.R. ports are clearly visible with the factory installed hex plugs still there. Plugs were installed since the 327 engine that it was originally installed on did not have A.I.R. (3 speed manual trans). 

That car would have had a smog system on it from the factory. All manual small blocks had them in 69. Smiley
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« Reply #13 on: August 07, 2006, 09:40:28 AM »

The "527" and "826" manifolds are shown as correct for all manual transmission, with or without A.I.R., small block Camaro applications for 1969 including the 302 Z28 engine.  These manifolds have A.I.R. drilled and tapped connections.  If A.I.R was not used, the ports were plugged.   

From personal experience, I removed a set of the "527" and "826" manifolds from a 69 327 base coupe that had a 3 speed manual and no A.I.R.  The manifolds were required because of the 3 speed manual trannsmission.  Since there was no A.I.R., the ports were plugged from the factory.  The "527" manifold is currently on my car.

Plugs weren't used in the exhaust manifolds on non-A.I.R. engines - they used the same 527 and 826 castings, but they weren't drilled or tapped for the air manifolds. The only engines that used factory-installed plugs in the exhaust manifold openings were those that specified RPO KD1 (Less Air Injection) for overseas export.
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« Reply #14 on: August 07, 2006, 12:44:34 PM »

Kurt / John:

Makes sense that the non-drilled manifolds would be used as much as possible with heat stove variants being used as needed for auto trans applications. 

Since all SB, manual tranny Camaros in '69 had smog, the manifolds I referenced above and in the one pic, were obviously plugged at a later date - when someone canned the smog system. 

As an aside, it is amazing what these things go for on eBay.  The LH manifold (as shown in the pic) is on my engine, the RH manifold, being a non heat stove variant, was of no value to me so I sold it a while back on eBay.  You would have though the thing was made of platinum - because of the correct casting number for Z28 (as well as other manual tranny applications - in this case a 327/210 Hp w/3 speed manusl)

Thanks

Richard
                  
« Last Edit: August 07, 2006, 01:34:13 PM by rich69rs » Logged

Richard Thomas
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« Reply #15 on: August 07, 2006, 03:04:10 PM »

Plugs weren't used in the exhaust manifolds on non-A.I.R. engines - they used the same 527 and 826 castings, but they weren't drilled or tapped for the air manifolds. The only engines that used factory-installed plugs in the exhaust manifold openings were those that specified RPO KD1 (Less Air Injection) for overseas export.
But since all 527 and 826 castings went on manual trans cars, all were drilled and tapped. Never seen either of those manifolds not drilled and tapped.
Lots of BB manifolds have tapped and untapped versions.
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« Reply #16 on: August 07, 2006, 03:09:51 PM »

So for all 69 SB, auto tans applications, there are no A.I.R. connections and the casting numbers are:

LH side:  3942529
RH side:  3932376

correct?
« Last Edit: August 07, 2006, 09:40:46 PM by rich69rs » Logged

Richard Thomas
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« Reply #17 on: August 08, 2006, 07:22:40 PM »

Rich........Could I bother you to remove the air cleaner and take a couple sideview pics of the carb for reference. Also, a picture of the air cleaner, which was missing. The air cleaners are easy for me to get at the local boneyards here in AZ for $10-15 off passenger cars. I'm sure the air cleaners are dated like my buick's, so a picture would be all I need
Any help appreciated
« Last Edit: August 08, 2006, 07:26:38 PM by GS STAGE 1 » Logged
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« Reply #18 on: August 08, 2006, 07:29:42 PM »

Be glad to - as a start, here are a couple from last year when I put the engine together.
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« Reply #19 on: August 08, 2006, 07:31:58 PM »

Part number tag:  327 or 307 with auto transmission; no A/C; p/n 7029110
« Last Edit: August 08, 2006, 07:45:47 PM by rich69rs » Logged

Richard Thomas
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« Reply #20 on: August 08, 2006, 07:39:37 PM »

The small bore air cleaner for the small 2 Bbl carb (SAE 1-1/4 throttle plate; used on 1969 Camaro 327/210 Hp and 307/200 Hp engines) is a harder find than the aic cleaners for the larger 2 Bbl's (SAE 1-1/2" throttle plates) that were used on passenger cars, 327 / 235 Hp engine for example.  Matter of fact, it was one of the hardest pieces for me to find. 

Air horn on the SAE 1-1/4 carb is smaller and hence the mounting hole in the bottom of the air cleaner is smaller.  I have an air cleaner from a '70 Nova hanging on the garange wall that looks like this one except the mounting hole in the bottom is too big to fit the air horn of the SAE 1-1/4; 2 Bbl carb.  It was made to fit the SAE 1-1/2; 2 Bbl Carb which was primarily used on full size cars, i.e. 327 / 235 Hp engines in 1969.

Underside of the air cleaner also has a scalloped area to fit around the 90 degree fitting on the fuel line inlet to the carb.  Air cleaner without this scalloped area will not clear the fitting properly.  The air cleaners for the larger 2 Bbl won't have this because the fuel line comes in to the front of the larger 2 Bbl carb as opposed to up from the bottom and into the side via the 90 deg fitting for the SAE 1-1/4 carb.

The mounting hole diameter in the bottom half of the air cleaner is nominal 2-1/2".  Note that '69 2Bbl air cleaner mounts with the snorkel turned toward the RH side with the locating tab fitting into the mating slot on the carb air horn.
« Last Edit: August 08, 2006, 09:34:56 PM by rich69rs » Logged

Richard Thomas
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« Reply #21 on: August 08, 2006, 07:47:20 PM »

Wow, that carb looks great. Whats the correct color for the carb called? Is this like an eastwood carb restore kit?
Thanks for pointing out the 2 versions of mounting hole, you saved me the grief I may have incurred

Is the heat stove the same on the passenger cars, or camaro specific?

Rich, take your time with pics, it doesn't have to be tonight, when its convenient is fine






« Last Edit: August 08, 2006, 07:55:40 PM by GS STAGE 1 » Logged
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« Reply #22 on: August 08, 2006, 07:56:01 PM »

Front view of the carb.

I had the carb restored by Daytona Parts Company  http://www.daytonaparts.com/


I don't think (not sure) that the heat stoves are the same on passenger cars.  Most passenger cars seem to use the "rams horn" exh manifold which would probably use a different heat stove and tube arrangement.  That one needs more research - just a best guess on my part.
« Last Edit: August 08, 2006, 09:03:55 PM by rich69rs » Logged

Richard Thomas
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« Reply #23 on: August 08, 2006, 08:23:07 PM »

They did a fabulous job, and there pricing seems fair. I spent a little less than double that, to have my 70 GS Stage 1 carb restored. IMO is money well spent. Heck the stage 1 carbs are selling on ebay for ridiculous money, in the $2500 range.
Nothing looks better than a correctly restored carb
« Last Edit: August 08, 2006, 08:53:48 PM by GS STAGE 1 » Logged
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« Reply #24 on: August 08, 2006, 09:04:48 PM »

RH and LH side views of the carb
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Richard Thomas
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« Reply #25 on: August 08, 2006, 09:57:55 PM »

I now know the carb isn't missing anything, thanks to your pictures.
I'll see what I can find this coming week, Im going to do my quarterly west coast junkyard spree
I really appreciate your help Rich, and if you are looking for anything, just let me know. Its not uncommon for me to bring home 15+ posi units, lots of sheetmetal-(anything but 67-9 camaro, there's rarely any of that in the yards anymore), but chevelle stuff is still around, sport mirrors, altenators, carbs, heads, maplight mirrors, t-3's, 200 4r, T-350, T-400, 700r4's, steel cranks, tilts, radio's, steering wheels, trim, etc.

I do them all, buicks, olds, pontiac, chevy, mopars, sometimes ford-usually for the 9" posi chunks, and 67-72 chevy/gmc  trucks
« Last Edit: August 08, 2006, 10:03:59 PM by GS STAGE 1 » Logged
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« Reply #26 on: August 09, 2006, 10:38:59 AM »

Thanks for the offer - there is one item -

If you ever find the correct throttle rod for this 2Bbl, I could sure use it.  I don't have the correct one and if you look in the pic above, you'll see that in order to make what I have work, I've got it connected at the wrong location on the carb.

Richard
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Richard Thomas
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« Reply #27 on: August 09, 2006, 02:23:30 PM »

Consider it handled!!!!!!!!!

Is this the piece your refering too?
I cant tell if its tweeked or not, its good for reference anyway
« Last Edit: August 09, 2006, 03:34:34 PM by GS STAGE 1 » Logged
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« Reply #28 on: August 09, 2006, 04:17:29 PM »

That is the piece.  Problem I've had is finding the right one with the right offset so that you can go from idle to WOT and be able to adjust the TV kickdown on the tranny properly.  If I put the rod I have in the proper location on the carb and adjust the TV kickdown properly, the throttle will not open far enough to get WOT.  I'm sure I don't have the correct linkage rod - need to find that beast in order to solve this little dilema. 

With the linkage that I have, installed in the lower hole as shown on the above pic, I can get WOT and properly set the TV kickdown.  Hasn't been a big deal, but i'd like to get it set up correctly.

Thanks in advance for looking.

Richard
« Last Edit: August 09, 2006, 04:23:37 PM by rich69rs » Logged

Richard Thomas
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« Reply #29 on: August 09, 2006, 07:10:59 PM »

No sweat............ I'll find it.

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« Reply #30 on: August 29, 2006, 08:07:08 PM »

Rich, got your throttle rod piece, need address you want shipped to. I wont be able to ship till the weekend
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« Reply #31 on: August 31, 2006, 12:11:17 AM »

Great -

If you don't mind, send me an e-mail at richard.thomas@romadyn.com and I'll e-mail my address back.  Let me know what I owe you for the throttle linkage.  I really appreciate it.

Thanks again.

Richard Thomas
Minden, NV
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Richard Thomas
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