65 Dart 273 hi-po. Are these 9 or 10 inch drums?
- Thread starter Stumpy
- Start date
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Measure them.
I don't think so. But like you said, if the overall is 11'' inside should be 10"
1WildRT
Well-Known Member
I think you can rule out 9"
Aren't all the 9 inch front drums the ones with fins all over them?
oldmopardude
Well-Known Member
V8 cars had 10 inch brakes
It did have 13”. All 65s had 13s. Even the Chargers with Cragars. It has 14” Rallyes right now.
BKCowGod
Well-Known Member
1WildRT
Well-Known Member
So, you've added QA-1 control arms & KYB shocks but your still running 9" drums??? WTH???
So slide the drums off and measure. It's a five minute job.
oldmopardude
Well-Known Member
9 inch drums are ok on a 13 inch wheel or 14 with 4.5 rim, as on my 71 demon. but, with 5.5 rallyes the car may have a hard pedal ,and
it takes a long time to stop.
valiantwagonguy
Well-Known Member
Yeah the finned ones are later and the non finned ones are from the early 60's up to around 68 or there about . They interchange
My 65 Cuda I had 273 2 bbl car had 10 inch drums.
And it's hard to believe those drums are that far out of balance. Those weights will prevent some wheels from fitting flat on the hub.
Re the brake drums all 65 A-bodys had 9" drums up til mid October when 10" brakes arrived on the scene w/273 V8 or heavy duty brakes.
BKCowGod
Well-Known Member
KYB shocks were $25/ea. QA1 was about the same price as rebuilding my factory stuff. 9" drums stop the car without having to replace my wheels before I decide what I want to replace them with.
cudamark
Well-Known Member
That looks like a 10". Some are stamped with the max diameter allowed on the flat surface between the studs. It only takes a few minutes to pop the grease cap off, remove the cotter pin and outer bearing, then slide the whole hub and drum assembly off. If you're going to do a brake job, you're going to need to know whether the drum is still within specs anyway. You'll also want to check the condition of the brake hardware, wheel cylinder, and bearings, so, pull it off and check everything.
They’re 10”. Look at the difference in the shoe width between yours and BK Cow Gods 9”. Also, a quick look inside and you’ll find that there are no push rods for the wheel cylinders to push out the shoes, 9” had an embossment right on the shoe that sat right on the piston inside the wheel cylinder. And, the size of the dust cap also gives it away, 9” uses a much smaller dust cap than the 10”
Coda Improvements
Member
Just bought a 65 Dart 270 with a 273. Any suggestions on finding quality brake components ( NOS is preferred)?
Weird. My car was built in June 65 but it has 10” brakes confirmed. I guess they could have been upgraded at some point.
You will need to measure. Couple be either.
I measured them. They are definitely 10”.
I was thinking the same thing. As small as they are, how could they be? lol
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