I'm new to using 9" rears. Always had GM 12 bolts in the past. Bought an old Super Stocker and started re-doing it. Going to bracket race it. Can you tell me if this center section is factory or aftermarket. If it's factory will it hold up? The car had a Pontiac 400 in it when raced in SS, but I'm putting in a 501 Pontiac. Should have a little more horsepower and a lot more torque. Thanks.
![80822]( "80822")
540hpgp
9" center section question
I'm new to using 9" rears. Always had GM 12 bolts in the past. Bought an old Super Stocker and started re-doing it. Going to bracket race it. Can you tell me if this center section is factory or aftermarket. If it's factory will it hold up? The car had a Pontiac 400 in it when raced in SS, but I'm putting in a 501 Pontiac. Should have a little more horsepower and a lot more torque. Thanks.
![80822]( "80822")
That looks like a factory Ford, there should be numbers on the back side, the pinion support looks to be stock too, you will need a "daytona" support that has bigger bearings and heavy duty. You also have to look at the carrier bearings they make several sizes, but if it has 31 spline or larger axles it should have the bigger bearings, pull it apart and look at the pinion support bearing and see if the housing is cracked, ect.
I believe the Ford OEM "N" housing only had 3.062" bearing outside race diameter. MW makes a bearing and spool for 35 spline for it, but it is not optimal strength wise. I ran one like that for years at 600 HP. Also the stock steel pinion support is weak and I have witnessed them fail on the starting line. "You don't want to see that." I personally would not have that in any fast bracket car. I would clean it up, paint it nice, and get whatever I can out of it and invest in a quality race center section with the gear ratio optimal for your use. Strange or Moser steel or aluminum center with draw thru bolts, big pinion US Gear ring and pinion, heavy duty race pinion support, 1350 size yoke would be much better than what you have and could save you an accident. Quick Performance may also be an alternative. JMO. (But you looking at $950 for steel and $1250+ for aluminum unless you can put it together yourself.)
If your car was a real super stocker, by the looks of that center section it was been abused over and over and if it has some real steep gears more than likely the small pinion bearing housing in the main case would of been ground down to make room for the gears and when that's done the stock housing cracks in that area.
Ford 9 inch Tech - MalibuRacing.com
Ford used the 9 inch rear from around the 1957 model year right up until the early 1980’s in cars and trucks. It was not the only axle used, but was by far
maliburacing.com
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