9 inch booster ID help

Stormrider

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Hello,
This booster is suppose to be a 2883059, 9 inch dual booster, it measures 8 3/4 inch across.
looking for a part number on it and cant find one. I want to verify that this is a Mopar 9 inch C body dual booster. thanks for any help you can provide.
IMG_20200402_172729860[1].jpg
IMG_20200402_155347379[2].jpg
 
The only way to truly tell is to measure the length of the pushrod hanging out the back and checking the factory specs of the original Cbody units. The power booster body itself was used in different cars.
 
Thanks , the rod is about 4 inches to the center of the bolt whole. is 8 3/4 inch considered the 9 inch unit found in c bodies ?
 
Thanks , the rod is about 4 inches to the center of the bolt whole. is 8 3/4 inch considered the 9 inch unit found in c bodies ?

The 8" or 9" booster refers to the diaphragm size not the exterior diameter. If you measure the circumference of the unit, on a 9" that will be about 28.5" and divide by 3.14 will give you a close estimate of the diaphragm size 28.5/3.14=9.1". From the back of the case to the end of the drive rod loop should be about 5" with the unit at rest if it is a c body booster.

Dave
 
Last edited:
Thanks,
its 28 in. cir, 28/3.14 = 8.917 and the rod is 4 1/2 in. to the end of the rod. the rod has a stamp of 7 C ID
 
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