Looking for Mr. Goodwrench

[Lawfree]

I am un-able to source replacement rotors for my Cutlass big brake up-grade.
The are from a 2003 Chevy S10 Blazer 2wd Extreme pkg with the DP calipers.
All parts chains and on-line sources show only one rotor size. Autozone P/N 50047 is what they all cross to, but this is NOT the right part. The GM OEM rotors I have are 10.75" DIA (not 10.5") and are @ 1.125" wide. The rotors are stamped E-5 CANADA 27.5mm MIN THK and have the numbers 15733700
and also 129602. I have spent hour and hours on-line trying to find a GM P/N. GM Parts Direct does not show a match for any of the numbers on the orig. rotor.
If any member has access to the GM Dealer Parts fiche or computer, I would greatly appreciate help locating the GM OEM Part Number. Also a parts breakdown, diagram and any other info would help me out a lot.
Once I get this brake conversion completed I'll post pix. I do know that the se DP HD brakes were only on a limited number of S10 Blazer 2wd Extreme 1998 to 2003.

TIA


Lawfree


Lawfree

 

[megaladon6]

stupid question time: are you sure that the way you measure rotors is the same as the way they measure them? if you have a set that you measured, did they have rust on them that could account for the difference? could they be c5 corvette rotors?

 

[Lawfree]

These are definitely different rotors and that is one of the advantages of using the S10 Blazer Dual Piston Calipers. The brakes have a larger diameter and are thicker. This is confirmed by the min thickness stamped into the rotor itself. The stock rotors are stamped 24.5mm and the ones I got off the 2003 Blazer are stamped 27.5mm min. thickness. This is not a question of mis-measurement. These rotors are definitely a different part.
My guess would be since this brake option was relatively rare, the aftermarket companies do not MFG. replacement rotors for them.
I was hoping another member here had done the conversion, or might have access to a donor vehicle VIN # so I can get an OEM P/N from GM.