Drum to Disc Conversion. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Deuce · 02-07-2005, 03:59 PM

What parts do I need to convert a 67 Chev with drum brakes to either 71/72 discs OR 73+ discs and spindles.

krue · 02-07-2005, 05:00 PM

The easiest way is to swap the entire front crossmember out of the donor vehicle. Get the booster, master cylinder and prop valve off of a 71-72.

Deuce · 02-07-2005, 05:37 PM

I was just told the lower balljoint and outer tie-rod end are the only things that need to be changed other than the MC/Prop valve. Is this true??

**raggedjim** · 02-07-2005, 05:41 PM

I don't think the outer tierod end from a 71-72 will fit the sleeve on a 67-68 (different thread), you might need the whole center link from a 71 up.

Rg

67ChevyRedneck · 02-07-2005, 05:45 PM

I'm not sure, but other than swapping the spindles, rotors, and associated brake parts I think that's correct...something about the tie rod connection with steering box being different. I thought the lower ball joints were the same???....I'm sure others will jump in too... I swapped my whole set-up. I paid, I think, $125 for complete disk set-up off of a 72 with the power MS and P-valve. I've read several posts where people had trouble getting rid of a disk set-up. Post a WTB on parts board and see what you can get.

Tx Firefighter · 02-07-2005, 07:48 PM

Lower ball joints changed when they went to discs in 71. The same lower fits the newer 73-87 style trucks too.

68w/sbc406 · 02-07-2005, 07:55 PM

there are adapter sleeves out there to make the tie rod conversion if you dont change your drag link

tmad · 02-07-2005, 07:59 PM

I bought the entire conversion kit! cost me about 900.00 total but it bolted right in!! New spindles,rotors calipers ,pads vac. drum,prop valve the works! Took very little time and although its a good sum of money we are talking brakes here,hard to stop without them!!!

02-07-2005, 03:59 PM	#1
Deuce Registered User Join Date: Apr 2004 Location: Calgary, Alberta,Canada Posts: 1,595	Drum to Disc Conversion. What parts do I need to convert a 67 Chev with drum brakes to either 71/72 discs OR 73+ discs and spindles. __________________ I know what your thinking.......I have ESPN. Sometimes it's easier to do things the hard way. Fesler Built 1968 Chevy C10....Must resist the urge to mess with it!!

02-07-2005, 05:00 PM	#2
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	The easiest way is to swap the entire front crossmember out of the donor vehicle. Get the booster, master cylinder and prop valve off of a 71-72. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

02-07-2005, 05:37 PM	#3
Deuce Registered User Join Date: Apr 2004 Location: Calgary, Alberta,Canada Posts: 1,595	I was just told the lower balljoint and outer tie-rod end are the only things that need to be changed other than the MC/Prop valve. Is this true?? __________________ I know what your thinking.......I have ESPN. Sometimes it's easier to do things the hard way. Fesler Built 1968 Chevy C10....Must resist the urge to mess with it!!

02-07-2005, 05:41 PM	#4
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,460	I don't think the outer tierod end from a 71-72 will fit the sleeve on a 67-68 (different thread), you might need the whole center link from a 71 up. Rg __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203

02-07-2005, 05:45 PM	#5
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	I'm not sure, but other than swapping the spindles, rotors, and associated brake parts I think that's correct...something about the tie rod connection with steering box being different. I thought the lower ball joints were the same???....I'm sure others will jump in too... I swapped my whole set-up. I paid, I think, $125 for complete disk set-up off of a 72 with the power MS and P-valve. I've read several posts where people had trouble getting rid of a disk set-up. Post a WTB on parts board and see what you can get. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

02-07-2005, 07:48 PM	#6
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Lower ball joints changed when they went to discs in 71. The same lower fits the newer 73-87 style trucks too. __________________ I'm on the Instagram- @Gearhead_Kevin

02-07-2005, 07:55 PM	#7
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	there are adapter sleeves out there to make the tie rod conversion if you dont change your drag link __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

02-07-2005, 07:59 PM	#8
tmad Registered User Join Date: Nov 2001 Location: youngsville pa Posts: 166	I bought the entire conversion kit! cost me about 900.00 total but it bolted right in!! New spindles,rotors calipers ,pads vac. drum,prop valve the works! Took very little time and although its a good sum of money we are talking brakes here,hard to stop without them!!!



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