Brake Drum Size

**ncof300d** · 06-10-2009, 01:47 PM

Without removing the rear wheel is there a way to tell whether I have 10" or 11" drums?
My VIN is 1GCEK14R2VE205747.

**werty** · 06-10-2009, 02:04 PM

1GCEK14R2VE205747VIN:1GCEK14R2VE205747Year:1997Mak e:Chevrolet TruckModel:K1500 1/2 Ton 4WD - PickupEngine:5.7 L 350 CID V8VEHICLE INFORMATIONCountry:UNITED STATESMake:ChevroletVehicle Type:Pickup TruckModel:K1500Engine Type:V8, 5.7L; CPIYear:1997Assy. PlantPontiac, MIProduction Seq. Number:205747Body Type:2 Door Cab; RegularTrim Level:BaseDriveline Type:4WDGVWR Class:Class E: 6,001-7,000 lbBrake System:HydraulicSeries:1/2 tonVehicle Class:Full-size PickupEngine Series Code:WRN L31Fuel Type:GasolineManufacturer:General Motors CorporationEngine Code:R
I CANT THEY LIST BOTH SIZES

**Jimmiee** · 06-10-2009, 03:57 PM

Why don't you want to pull a wheel?

**MrShorty** · 06-10-2009, 06:03 PM

If the Max diameter is stamped into the drum in a convenient place, and you can see through the gaps in the wheel, and one of those gaps is in a convenient place, then you would be able to read the max diameter off the drum without removing a wheel. Otherwise, the easiest (and most of the time quickest) way to find out is to pull a wheel and see what is stamped into the drum,

**Mean_Green_95** · 06-10-2009, 07:01 PM

I would 10, A guy I know has the a Z-71 and he has the 10in drums too.

**ncof300d** · 06-11-2009, 07:49 PM

Originally Posted by Jimmiee

Why don't you want to pull a wheel?

I was hoping to only pull the wheel when I go to replace the brakes.

**Jimmiee** · 06-11-2009, 08:04 PM

Originally Posted by ncof300d

I was hoping to only pull the wheel when I go to replace the brakes.

Murphy's Law says if there are 2 choices you will always get the wrong one, <G> Another reason to pull the wheels is you may need a hardware kit and if you don't pull the wheels,, you will need wheel cylinders for sure!

**Z71_guy** · 06-12-2009, 11:23 PM

most likely you have 10in but like jimmiee said if you dont look it will be wrong

**ncof300d** · 04-06-2010, 04:07 PM

I changed the front brakes an now I want to take care of the rear. I pulled a wheel and I did not see a 10 or 11. I did find a part number 15588223. I googled the number but could not find out which size. Any guesses? I held up a tape and I am guessing that they are 10' drums.....just want to confirm.

**jedepsub** · 04-06-2010, 07:27 PM

You can also measure the thickness of the drum. There is over 1/4" difference in thickness between the 10" & the 11" shoes. The 10" x 2.24". The 11" x 2-3/4".