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4/29/11 8:10pm - Original Message: 'Rear calipers'
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Quick question and hopefully quick answer....are the rear calpers on a 74 the same with the exception of which ports are used for bleeders and fluid line? Ordered 2 new ones from MAM a left and a right. the 2 I received have a LH stamped in them and the same casting numbers on them. The 2 old ones have casting numbers with  different last numbers. Called MAM and they said didn't know and would check into it. Didn't get a call back the rest of the day. Would like to get them on this weekend if the only difference is the bleeder and line locations. Confused danascar2011-04-29 18:11:38

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4/29/11 9:29pm - Reply: 'Rear calipers'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
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The bleeders on the calipers have to be at the top when the caliper is mounted. I dont have mine here at the house but I would think if they have the same numbers they would have to be the same side. I dont think you got both sides but as you suspected you probably got 2 of the same side. Not what you wanted to hear if you planned on installing them this weekend. Hope that makes sense.
Rodney


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4/29/11 9:52pm - Reply: 'Rear calipers'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Calipers are made Left & Right...they will only bolt up properly one way. If you put them on the wrong side, the bleeders will be on the bottom instead of the top.
The correct calipers will have the bleeders and the inlet line at the top, and the bolt holes for the spindles to the inside.
Also, the rear calipers have two bleeders at the top, instead of the one bleeder for the front calipers.
btw..the holes for the bleeders are different than the holes for the line...the bleeder holes have a tapered seat in them, where the inlet line hole will have an inverted seat for the flared brake line...you cannot mix/match these fittings. Well...you can, but it will leak like a sieve, and it will ruin the seats for both.


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Joel Adams
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4/29/11 11:23pm - Reply: 'Rear calipers'
yostusota
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York, PA - USA

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1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
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Sounds like they failed on two points..wrong part and no return call!! Rebuild the ones you got and send back the stuff..you can always buzz down to Carlisle tomorrow and pick some up..bunch of guys have them there!! (click here to see one of the better ones!)

Rich 
 
 
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Norsky2011-05-01 13:07:43

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4/30/11 8:23am - Reply: 'Rear calipers'
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Really confused now! Just did a test fit and both bleeders are on top on both sides and the inlet ports are where they should be. They bolt up okay, all holes line up. Is it possible, although not likely, that they are stamped and have the wrong casting numbers on them?

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4/30/11 1:18pm - Reply: 'Rear calipers'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
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Do they match up to your old calipers? If the calipers will bolt to your brackets correctly and the bleeders are on the top and match the calipers you are replacing, I wouldnt get concern with the part number stamping. After your last post description it sounds as tho you will be ok. Hopefully your bleeding of the brakes goes well.
Best of Luck
Rodney


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4/30/11 4:45pm - Reply: 'Rear calipers'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19458
You have the correct set of calipers...just ignore the casting or stamped info. Rebuilt stuff doesn't always follow proper protocol for numbers. If they bolted up, and the lines/bleeders are up in the righ position, yer good to go.

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Joel Adams
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4/30/11 6:42pm - Reply: 'Rear calipers'
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Well, that's good news / bad news. Good that I can use them, hopefully, bad news that I ordered and paid for brand new calipers! $ 160 each  from MAM....first time ordering from them and most likely last time!!   Ouch Wonder who I can talk to when we're out there????

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Dan T
 

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4/30/11 6:47pm - Reply: 'Rear calipers'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Like I said ...boxem up and send them back..rebuild is only 30$!!

Rich

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4/30/11 10:55pm - Reply: 'Rear calipers'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956
Go to the head of the class and talk to Mike Yager!!  He is the Chief Cheerleader and CEO/COO of Mid America.  One of the nicest guys you wanna meet!!  Look me up at the Hotel and I will put you under my wing!!!  (Now what is EBO gonna say about that>>)
Dan


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5/1/11 7:33am - Reply: 'Rear calipers'
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Okay Dan....(good name BTW)....that sounds likw a plan. Although Ebo sort of has me under his wing for getting my paint to shine! Smile Guess there's always room for 2.Tongue
 
Dan


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Dan T
 

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5/2/11 9:37am - Reply: 'Rear calipers'
Jaws79 Lifetime Member
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Sykesville, MD - USA

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1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

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So, Dan, are they on and working or not? Inquiring minds want to know!   
 
Barry
 
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5/2/11 11:15am - Reply: 'Rear calipers'
rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1152
Just a bit of info on a brake sight (Duntof Braking) they spacify it will cost more for the correct casting numbers. I looked at some of other catalogs and it doesn't mention anything about casting numbers?Question

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5/2/11 2:36pm - Reply: 'Rear calipers'
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. 1999 Covertible, 6 speed, Atomic orange, Oak interior

Joined: 1/28/2010
Posts: 763
Well...they went on with absolutely no problem other than I had to tweak the bends on the new stainless brakelines going to them. Still need to borrow my son-in-laws brake bleeder kit and get them bled. Still not a single word from MAM on my question. Thumbs Down Need to get new parking brakes adjusted and the brakes should be good to go!

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Dan T
 

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5/2/11 5:55pm - Reply: 'Rear calipers'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19458
Same calipers were used from '65 up....lots of different casting numbers to choose from, so if you want "correct" numbers, it will usually cost more.
Glad ya got em on, anyway.


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Joel Adams
C3VR Lifetime Member #56    
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(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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