I'm wonderining what 10-inch drums will fit on my 67 A-body. Is it ok to just change the fronts and leave the rears 9" drums? This is just for now (safety). If my economy picks up, one day I'll spring for discs and 4.5" bolt circle wheels.

No problem having 10" front and 9" rear. (other than a possible bolt circle mismatch which makes tire rotation and the spare a pain)

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Our 65 had 10" drums and it was small bolt pattern. If you can find a v-8 car (not so easy) you could get the whole setup, front and rear. Our 65 had the normal small 4 bolt bearing retainers on the rear, so those old 10" backing plates should fit a rear that came with the 9" drums.

my 75 duster has 10 in fronts and 9 in rears w/ a small bolt pattern, if it helps

_________________
1975 Plymouth Duster,225/6 2bbl. and duels, 904, 7 1/4
1986 Dodge Charger Shelby, 2.2 Turbo I, A525

The main reason I'm considering changing the 9" front drums is that I read, maybe on-site that the author wouldn't 'go over 40 MPH' with the 9's due to the undersized bolts into the LBJ. I get the impression that 10" drums up to '72 would fit the current ('67) upper control arms, with a new LBJ. And be economical at this time. Just opened the statement enclosed.

_________________
/6 '67 Barracuda convertible, electronic ignition, 4-OD, street cam, SBP KH discs, 3.55 SG 7.25" 1" t-bars. Bilstein.
340 '67 fastback, Doug Nash 5-speed.
1988 Toyota pickup work truck

Some people are given to exageration. 9" brakes in good repair will give you adequate performance; you just have to allow yourself a little extra room. It's your money, but if it were mine I wouldn't spend it on 10" drums but would save it untl I could do a proper disc brake upgrade.

_________________
David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

Caramba.

This nonsense about undersized LBJ bolts was written by Richard Ehrenberg, who often puts together very helpful and informative articles but also sometimes lets his imagination run far, far, far away with him. This is one of those times. There is no such danger.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

Agreed.
I have been running 9 inch brakes on my drag cars for years, at over 100 mph.
The main problem with the older 9 inch is the single pot master, which is a safety issue, and easily corrected, and brake fade, under repeated hard stops. Tis last thing is not normally an issue in a drag car. I would not be concerned with any components.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

The problem isn't that you might not allow yourself enough space, but that the other folks on the road might not. Better tires, brakes, and handling are good things. Careful driving is critical.
Good advice. I drove safely with the 9-inchers for a long while, then went straight to 10.87" disks. It's a good swap. It also made it easier to get a better tire/wheel combination. Good tires are a very good investment.

About the "undersize" LBJ bolts on the 9" drum setups - I'd be more worried about the ancient 7/16" lugs holding your wheels on. The left-hand thread lugs especially have often been abused by unknowing tire-store workers, and others working on the car over the years. They may not be as strong as they once were. Whenever you have the wheels off, take a good look at them, just to make sure.

_________________
"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO

Yeah! Those Left Hand threads! HaHa...

When I Was Eleven, My Father Had A Good Laugh At My Expense After Asking Me To Remove One Of A Wheel From His Swinger...

I Was Really Goin' At It With 150psi And An Impact Gun

Thanks for the input. Sounds like if I follow the advice of Dakight and save pennies for the full upgrade, it'll be ok. I usually leave plenty of braking room anyhow, much to the dismay of the sardine types.

Thanks for the input. Sounds like if I follow the advice of Dakight and save pennies for the full upgrade, it'll be ok. I usually leave plenty of braking room anyhow, much to the dismay of the sardine types.