Topic: Fluid Leak...Not Sure What This Is
in Forum: C3 Engines
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So here's a twist on the WP casting number, just double checked the 330813 number and it is correct. I got the 330818 number from Richard Prince's '68 to '83 Restoration Guide (page 135) but it must be a misprint. Just checked my pump and the NCRS Judging manual and 330813 is correct, sorry for the confusion !!
John Sigmund

valkman57@sbcglobal.net
NCRS Member 61302
NW NCRS Chapter Member

Duct tape is the new Black !!
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Jason
Your doing a great job! When you own a Vette you need to learn how to work on it yourself. Listen Vman and Adam's apple they will get you through it. I am also a member of NCRS and wished I had known about them before I restored my car. I recommend joking NCRS just to buy the judging manuals for your car. If your excited about casting numbers and codes the NCRS books will have all the info. It saves countless hours of research.even if you don't participate in any functions. If your car is original and have it judged through NCRS at a regional level they are more experienced. they don't judge your car to another car like show and shines. They judge it by how close it is to the day it left the showroom.

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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
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Vman73 said: So here's a twist on the WP casting number, just double checked the 330813 number and it is correct. I got the 330818 number from Richard Prince's '68 to '83 Restoration Guide (page 135) but it must be a misprint. Just checked my pump and the NCRS Judging manual and 330813 is correct, sorry for the confusion !!
No problem! Great news!
I stopped into my machine shop this am on my way to work and he does not rebuild water pumps. Owner handed me the latest Hemming's catalog and suggested I find someone in there. I found a number of places that rebuild water pumps. I'm going to call tomorrow and check on prices.
"You know, we always called each other goodfellas. Like you'd say to somebody: You're gonna like this guy, he's all right. He's a goodfella. He's one of us. You understand?"


Redwoman - Thank you! I'm really enjoying this project!
I would love to have Red Velvet judged professionally. Although, I can see it being a deep rabbit hole. I'm pretty obsessive about stuff I am passionate about. If it doesn't check out to my satisfaction...there goes the kid's college funds! :)
What do I need to do to get my vette judged? Is that something that comes along with membership? I skimmed through member benefits on the NCRS website and didn't see info about it.
Jason
|UPDATED|9/2/2015 10:18:14 PM (AZT)|/UPDATED|
I would love to have Red Velvet judged professionally. Although, I can see it being a deep rabbit hole. I'm pretty obsessive about stuff I am passionate about. If it doesn't check out to my satisfaction...there goes the kid's college funds! :)
What do I need to do to get my vette judged? Is that something that comes along with membership? I skimmed through member benefits on the NCRS website and didn't see info about it.
Jason
|UPDATED|9/2/2015 10:18:14 PM (AZT)|/UPDATED|
"You know, we always called each other goodfellas. Like you'd say to somebody: You're gonna like this guy, he's all right. He's a goodfella. He's one of us. You understand?"


Adams' Apple said:
You don't have to be an NCRS member to purchase the Judging Guides...

$35 isn't bad for the book...I think I'll pick it up! Thanks for the tip!
"You know, we always called each other goodfellas. Like you'd say to somebody: You're gonna like this guy, he's all right. He's a goodfella. He's one of us. You understand?"


Adam is correct you don't have to be a member to buy the books. They send you two magazine quarterly. The driveline has adds for all kinds of service water pump rebuilders, carbs, etc.. The restorer has info from the regional and national shows, parts for sale etc. They do offer so many other services for free if your a member that you would have to pay for somewhere else. NCRS isn't for everybody and your excited about what the codes, casting, etc. if you become a member you could start out being an observer judge then move up.You would need to join a local Ncrs chapter first. Tom Walther is the contact for Wisconsin. PH 262-552-9672. Email zo6monster08@yahoo.com web HTTP:// www.ncrs-wi.com. NCRS main ph: 513-385-8526. Email info@ncrs.org.send me a private message if you need more info.
Great advise RW, give the local chapter of the NCRS a call and see when their next meeting is. It will give you a good taste of what the organization is all about and you'll see some fantastic cars.
|UPDATED|9/3/2015 3:20:01 PM (AZT)|/UPDATED|
Purchasing the judging manual is also a good first step and great tool to learn about your car. Right now the '73-'74 manual is in its second edition and IMHO it needs an update and I am going to be working through my local chapter to help do so.

It may be a while before you do a full on restoration, but the more information you can get, the more you'll appreciate the originality of your car. Like we said earlier, never throw anything out. Feel free to personalize your car, but if you do so in ways that can be undone, it will be important to you or a prospective buyer in the future.
So here's the last tidbit of numbers I promised you. When your ready to re-assemble check out your fan clutch. While holding the flange that bolted it to the WP and pulley, see if the portion of the clutch where the fan attaches to turns. It should turn but you should feel some resistance. If it's stuck or spins freely you may need a new clutch, but don't throw it out until you check the numbers. Like the WP if it's original it can be rebuilt !!
Right on that same edge where the four bolt holes are there is a date and manufacturing code.

You may have to zoom in a bit, but here's a shot of the code on my fan clutch - K2272SC. The code reads K=Oct., 22 = 22nd, 72 = 1972, SC = Schweitzer Corp or Schweitzer Clutch, the manufacturer. So my car was assembled in mid Dec., 1972 so this Oct. 22, 1972 clutch is perfect for my car, giving a very good indication that it is the original.
Check yours out and see what you can find. First make sure it is functioning properly, then check for a code.
Good luck and drop us a line if you need any help getting it back together.
|UPDATED|9/3/2015 3:20:01 PM (AZT)|/UPDATED|
John Sigmund

valkman57@sbcglobal.net
NCRS Member 61302
NW NCRS Chapter Member

Duct tape is the new Black !!
Vman73 said:
Check yours out and see what you can find. First make sure it is functioning properly, then check for a code.
Good Evening Guys!
Checked the fan clutch...turns but with resistance. Yay!
As for clutch numbers, I found: A3073S6 (or maybe the "6" is a "C"...hard to tell...but I swear it's a "6")
So I believe it means: January 30, 1973 and maybe Schweitzer Corp or Schweitzer Clutch
My car's build date is March of 73. Checks out!
|UPDATED|9/3/2015 7:42:39 PM (AZT)|/UPDATED|
"You know, we always called each other goodfellas. Like you'd say to somebody: You're gonna like this guy, he's all right. He's a goodfella. He's one of us. You understand?"


Hey Jason that's great news, I'm sure it's SC rather than S6.
Two more easy ones while you've got things apart are the WP pulleys. The 2 groove water pump pulley should have a 3991424 stamped into it someplace and the add-on smog pump pulley should be 3991425.
There are two more on the main crankshaft pulley and the add-on power steering pump pulley but its not worth taking more apart to check numbers. Put these two in your notes if you ever find yourself working down there in the future - main crankshaft pulley 3911013 and PS pump add-on pulley 3751232.
The term "numbers matching" gets a bit over used on Corvettes when people just look at the engine block and the VIN number, there's a whole lot more to the story. Right now I have a spreadsheet with about 70 items that are part numbered, dated coded or both on my car. Keep track of what you have and add to it as you do more work on your car and the most important part is enjoy it !!
Regarding your earlier question about a torque wrench, the only bolts that really need to be torqued (IMHO) are the four water pump bolts and the one that you took out of the intake manifold. All five bolts have a torque spec of 30 ft. lbs.
Keep us posted on your progress.
John Sigmund

valkman57@sbcglobal.net
NCRS Member 61302
NW NCRS Chapter Member

Duct tape is the new Black !!
in Forum: C3 Engines
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