Power Brake Conversion
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Cross-Country
Joined: Jul 2019
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Power Brake Conversion
I am looking to convert my 1966 F100 with a 352 from manual brakes to power brakes. I am trying to figure out where to attach the vacuum line from the power booster. Can I T off of the vacuum port on the back of the intake manifold that currently goes to the automatic transmission? If not, then where would you suggest I attach the brake power booster? My 352 is stock with the 2 barrel carburetor still in place. There are no plans to switch the intake manifold or the carburetor unless I have to. Thanks ahead of time.
Rick
Rick
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You should be able to use the same vacuum port as the transmission.
IIRC, our '66 had a rather small diameter vacuum line from the back of the 2bbl carb. The brake came directly off the intake, which was a larger port. You want that larger port for the brake as you don't want any delay in the vacuum supply. The transmission uses far less volume than the brake booster.
IIRC, our '66 had a rather small diameter vacuum line from the back of the 2bbl carb. The brake came directly off the intake, which was a larger port. You want that larger port for the brake as you don't want any delay in the vacuum supply. The transmission uses far less volume than the brake booster.
Logistics Pro
Joined: Jun 2018
Posts: 3,550
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8" is about all that will fit the FE block without hitting the valve cover.
https://www.ebay.com/itm/1957-77-For...Cclp%3A2334524
https://www.ebay.com/itm/1957-77-For...Cclp%3A2334524
Mountain Pass
Joined: Jan 2020
Posts: 198
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8" is about all that will fit the FE block without hitting the valve cover.
https://www.ebay.com/itm/1957-77-For...Cclp%3A2334524
https://www.ebay.com/itm/1957-77-For...Cclp%3A2334524
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New User
Joined: Sep 2020
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From: French Camp, MS
I have 65 F250 w/352 that someone before me put power brakes on. Mine came to me with an Edelbrock 4 barrel intake and there is a vacuum port on the intake behind the carb where the vacuum tree is mounted and that’s where it pulls from.
On my 70 model I converted to power brakes and I pulled vacuum from the same spot. It will pin you to the seatbelt/steering wheel if you press hard enough. I have the small booster on both trucks.
I don’t have any factory 352 intakes to give you any tips on where to get vacuum. I would try to find a place on the intake to pull from. Sorry for the lack of decisive help!
On my 70 model I converted to power brakes and I pulled vacuum from the same spot. It will pin you to the seatbelt/steering wheel if you press hard enough. I have the small booster on both trucks.
I don’t have any factory 352 intakes to give you any tips on where to get vacuum. I would try to find a place on the intake to pull from. Sorry for the lack of decisive help!
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