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power brake to manual master cyl for b body #2830095 10/07/20 07:54 PM 10/07/20 07:54 PM
Joined: Jan 2011 Posts: 80 tampa florida 1 1badrt OP member
1badrt OP member 1 Joined: Jan 2011 Posts: 80 tampa florida	Hello all, am converting my beep beep to manual disc, how do you convert from booster to manual mater cyl at fire wall, mounting holes different location than power. manual brake and steering nut here Last edited by 1badrt; 10/07/20 07:55 PM. 70 beep beep 383 N96 4spd 68 beep beep, eddy headed 383 4 spd 73 340 chally 73 340 duster

Re: power brake to manual master cyl for b body [Re: 1badrt] #2830143 10/07/20 08:52 PM 10/07/20 08:52 PM
Joined: Jan 2003 Posts: 6,393 Abilene, Texas F fastmark master
fastmark master F Joined: Jan 2003 Posts: 6,393 Abilene, Texas	It takes a different firewall reinforcing plate for a manual. Is yours a Bendix or midland ross booster?

Re: power brake to manual master cyl for b body [Re: fastmark] #2830244 10/08/20 09:35 AM 10/08/20 09:35 AM
Joined: Jan 2003 Posts: 21,072 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,072 Niles , Ohio	Not just the plate but also a master pusrod for manual brakes.Then get a master for say a 70 C body with discs.They work great as thats all we use on conversions.IIRC the pedal holes should be the same.Rocky Chrysler Firepower

Re: power brake to manual master cyl for b body [Re: therocks] #2830378 10/08/20 01:50 PM 10/08/20 01:50 PM
Joined: Sep 2003 Posts: 19,402 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,402 north of coder	i have always thought the pedal ratio for the manual brake master had the attachment hole closer to the pivot so as to give a more advantageous ratio needed for the manual brake master ?

Re: power brake to manual master cyl for b body [Re: moparx] #2830487 10/08/20 05:45 PM 10/08/20 05:45 PM
Joined: Jan 2003 Posts: 6,393 Abilene, Texas F fastmark master
fastmark master F Joined: Jan 2003 Posts: 6,393 Abilene, Texas	The manual brakes cly connects straight to the pedal. The powers uses the lever system under the dash.

Re: power brake to manual master cyl for b body [Re: moparx] #2830642 10/09/20 06:40 AM 10/09/20 06:40 AM
Joined: Jun 2014 Posts: 1,323 VA D dragon slayer pro stock
dragon slayer pro stock D Joined: Jun 2014 Posts: 1,323 VA	Originally Posted by moparx i have always thought the pedal ratio for the manual brake master had the attachment hole closer to the pivot so as to give a more advantageous ratio needed for the manual brake master ? Me too. Looking at the parts books, looks like C bodies did, but early through 69 B used the same pedal. Now the 70 parts book does show a new pedal for B body Power Brakes Auto but used the same pedal for either brake system with Man trans, and the Man brake Auto trans same as earlier pedal.

Re: power brake to manual master cyl for b body [Re: dragon slayer] #2830656 10/09/20 08:07 AM 10/09/20 08:07 AM
Joined: Feb 2003 Posts: 8,671 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,671	But you need to check the pedal. There are two holes sometimes and you have to change it to the other hole when switching between power and manual.

Re: power brake to manual master cyl for b body [Re: Andrewh] #2830666 10/09/20 08:43 AM 10/09/20 08:43 AM
Joined: Oct 2005 Posts: 8,872 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,872 Ontario, Canada	Instead of swapping the firewall plates you can buy an adapter from Mancini or Andy F. (I think) which fits between the plate and mc and converts from 4 bolts to two. Also, a late model aluminum Mopar mc with a 1-1/32 bore is ideal for this swap.

Re: power brake to manual master cyl for b body [Re: Stanton] #2832464 10/13/20 08:58 PM 10/13/20 08:58 PM
Joined: Nov 2003 Posts: 2,937 GA roadrunninMark master
roadrunninMark master Joined: Nov 2003 Posts: 2,937 GA	You can get the kit from Dr. Diff, highly recommend his products. I've gone manual disc from manual drum on my RR. I got his 15/16" alum. master cyl.

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