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Author Topic: AIR pump pulley PN# (for '68 396) ???  (Read 5442 times)
KevinK
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« on: May 11, 2006, 06:17:49 AM »

 For a '68 (Camaro) 396..., ...I'm trying to find which is the (technically) correct pulley PN.
    Does anyone know what PN(s) pulleys were used on the AIR pumps? (ie. "stamped" on the pulley) for this application?
   
 
   I believe I got #3917234 from the AIM, ...but is this correct? ...and what would be 'stamped' on the pulley? ...were there other numbers used? (ie. 3925522?)
 
  Thanks,
               Kevin
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lakeholme
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« Reply #1 on: May 11, 2006, 10:47:53 AM »

The #3917234 that you got from the AIM agrees with the original 68 Camaro part # for 396, exc. Sp. H/Per., C.A.C.  Sorry I don't have the info. about the # 3925522.
« Last Edit: May 11, 2006, 10:58:50 AM by lakeholme » Logged

Phillip
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My68SS
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« Reply #2 on: May 11, 2006, 12:40:24 PM »

The AIM is a little confusing for L78 and AIR equipment. On sheet L78/A2 under the upc 6 list, it quotes '6T - air compressor'. The asterix quotes 'Assembles same as RPO L35'
But on sheet A1 the engine illustration is without a pump, but on sheet A5 there is part of a pump drawn.   Undecided]

I'm sure your right though, L78 is exc. AIR?
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
mr396
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« Reply #3 on: May 11, 2006, 02:25:37 PM »

Here is the pulley on my original 68 L34.                                                                           
 
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1968 camaro RS/SS L34 396 air convertible
KevinK
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« Reply #4 on: May 11, 2006, 02:37:33 PM »

 ...Do you have any other photos of the pump (more specificallym ,,,the Pulley PN?)
   
    ...it appears the pulley on your car is 'stepped' and not 'flat' like many I've seen, ....which raises my interest in this even further.
 
  Thanks,
                  Kevin
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mr396
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« Reply #5 on: May 11, 2006, 02:47:21 PM »

The number is GM-3917238 with a p,I'll take a better pic and post it.
 
 Thanks,
 Kevin
Quote
...Do you have any other photos of the pump (more specificallym ,,,the Pulley PN?)
 
 ...it appears the pulley on your car is 'stepped' and not 'flat' like many I've seen, ....which raises my interest in this even further.
 
 Thanks,
 Kevin
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1968 camaro RS/SS L34 396 air convertible
mr396
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« Reply #6 on: May 11, 2006, 03:41:19 PM »

Here you go,I hope it helps.                                                                                             
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1968 camaro RS/SS L34 396 air convertible
Ed Bertrand
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« Reply #7 on: May 11, 2006, 04:57:16 PM »

Why not use the CRG 1968 Pulley Reference Chart??

Ed
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KevinK
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« Reply #8 on: May 11, 2006, 05:17:07 PM »

  I have referenced the pulley chart (and once again my hats off to CRG for compiling this stuff), ...but as I scour the web and other sources for the 'correct' one, ...I've rarely seen the #3917234 pulley. On a number of occasions, I'll see someone selling a complete and "technically correct" system, ...yet having a different pulley (than #3917234).
 
  Kevin(Mr396), ...THANKS! for posting the pic, ...(noting your pulley is #3917238, ...since you have AC)
 
   
   Thanks,
              KevinK
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Ed Bertrand
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« Reply #9 on: May 11, 2006, 06:02:56 PM »

Well, okay... Then according to my September, 1968 P&A 34, the P/N's are as follows:

1968 Nova, Camaro (396) (exc. Sp. H/Per., C.A.C) - 3917234
1968 All (307, 327, 350), 1968 Nova, Chevelle, Camaro w/C.A.C. (8 cyl.) (exc. P.G), 1968 Chevelle (S.S.) w/C.A.C. - 3917238
1968 Nova, Chevelle, Camaro (exc A.T., C.A.C. 396), 1969 Nova (exc. P.G., 396), 1969 Camaro (exc. P.G., Sp. H/Per. 396) - 3927116
1968 All w/Sp. H/Per. (396) - 3925522

So according to the P&A, the 3917234 would be correct for the 396/325 and 396/350 (NON A/C) Camaro, with the 3917238 being used on the 396/325 and 396/350 (WITH A/C, but WITHOUT Powerglide). The problem is, I can't seem to find a pulley number for the 396/325 and 396/350 with A/C AND Powerglide!!!

Make things clear???!!!

Ed
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KevinK
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« Reply #10 on: May 12, 2006, 06:55:44 AM »

Ed,
      ...actually, ...that does clear up a few things Smiley
 
    Thanks,
                Kevin


Well, okay... Then according to my September, 1968 P&A 34, the P/N's are as follows:

1968 Nova, Camaro (396) (exc. Sp. H/Per., C.A.C) - 3917234
1968 All (307, 327, 350), 1968 Nova, Chevelle, Camaro w/C.A.C. (8 cyl.) (exc. P.G), 1968 Chevelle (S.S.) w/C.A.C. - 3917238
1968 Nova, Chevelle, Camaro (exc A.T., C.A.C. 396), 1969 Nova (exc. P.G., 396), 1969 Camaro (exc. P.G., Sp. H/Per. 396) - 3927116
1968 All w/Sp. H/Per. (396) - 3925522

So according to the P&A, the 3917234 would be correct for the 396/325 and 396/350 (NON A/C) Camaro, with the 3917238 being used on the 396/325 and 396/350 (WITH A/C, but WITHOUT Powerglide). The problem is, I can't seem to find a pulley number for the 396/325 and 396/350 with A/C AND Powerglide!!!

Make things clear???!!!

Ed

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My68SS
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« Reply #11 on: May 12, 2006, 07:11:49 AM »

Quote
The problem is, I can't seem to find a pulley number for the 396/325 and 396/350 with A/C AND Powerglide!

powerglide [M35] was not available with 396 or Z28
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
Ed Bertrand
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« Reply #12 on: May 12, 2006, 09:13:52 AM »

That's correct for the Camaro, but I was looking at the applications in general, not just concentraiting on the Camaro.

Chevelle's (and Full Sized cars) were available with the 396 and Powerglide, and I don't seem to be able to find that application. If you look at the chart above, it shows:

"1968 Nova, Chevelle, Camaro w/C.A.C. (8 cyl.) (exc. P.G)"

Then it contradicts itself by the next line:

"1968 Chevelle (S.S.) w/C.A.C." Perhaps that includes all transmissions???

Sometimes that book is difficult to read. Or maybe I should say, difficult to decypher!

Ed
« Last Edit: May 12, 2006, 09:39:59 AM by bertfam » Logged
My68SS
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« Reply #13 on: May 12, 2006, 12:41:04 PM »

Quote
Sometimes that book is difficult to read. Or maybe I should say, difficult to decypher!

lol! tell me about it! I think there must be a special school of cryptography that the writers of such manuals attend   Cheesy
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
Ed Bertrand
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« Reply #14 on: May 12, 2006, 11:04:26 PM »

Not only that, but you can't think like a normal person with looking things up in this book. For instance, if you go looking for a "radiator" you won't find one!! No, Chevrolet DID use radiators in these cars, but in the P&A they're called a "Core"!

Here's another example... It took me several days to find the "Console" group. I accidently stumbled on it while searching for something else. "Console"?? Nope. they're called "Seat Seperators"!!

There are lots of other thngs like that in this book that make it difficult to use. I guess when you open this book you have to start thinking like a parts counter man (or woman... Don't want to get in dutch with the females)!!

 Grin

Ed
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My68SS
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« Reply #15 on: May 13, 2006, 12:21:17 AM »

Seat seperator for console!! Get-outta-here!! I wonder how many sleepless nights he/she spent dreaming up that one!!   Cheesy

One trick I use to thwart the robots that dream up these crypto-acronyms, is to think of other bits that bolt to or form part of the bit I'm looking for, that hopefully have a description that more closely relates to the part and that can lead me to the correct group. 
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
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