Searching sucks, so I figured i would start a hydroboost 101 thread so all the good information can be found in one place.
Feel free to correct my information or add more technical info.
Here is my collection of boosters, I was looking for the easiest, cheapest bolt in booster.
Vehicle: Chevy Astro 1990 – 1993
Description: Flat mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 6” from mounting face
Pedal rod hole size: ½”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
Vehicle: Chevy Astro 1994 – 1995
Description: Flat mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 6” from mounting face
Pedal rod hole size: 5/8”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
Vehicle: Chevy Astro 1996 – 2000
Description: angled mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 7 1/2” from mounting face
Pedal rod hole size: 5/8”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
Vehicle: Ford LTD 1984
Description: angled mounting plate built into the booster studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 1/4
Pedal rod length: 4 5/8” from mounting face
Pedal rod hole size: 5/8”
Vehicle: Chevy Suburban 1984
Description: Flat mounting plate with Bolts for mounting to firewall and 2 studs.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 7 1/2” from mounting face
Pedal rod hole size: 1/2”
pic num/desc.
1. 90-93 Astro
2. 90-93 Astro
3. 96-200 Astro
4. 84 LTD ( shows "stick out")
5. 84 LTD MC ( shows clocking plate)
6. 84 Suburban
7. 84 LTD
note on he LTD booster appears to take a master cylinder for manual brakes.( has a stick out)Bronco
Stock Bronco Steering box fittings:
5⁄8-18 Return (Areoquip adapter FCM2964)
11⁄16-18 Pressure (Areoquip adapter FCM2965)
Feel free to correct my information or add more technical info.
Here is my collection of boosters, I was looking for the easiest, cheapest bolt in booster.
Vehicle: Chevy Astro 1990 – 1993
Description: Flat mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 6” from mounting face
Pedal rod hole size: ½”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
Vehicle: Chevy Astro 1994 – 1995
Description: Flat mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 6” from mounting face
Pedal rod hole size: 5/8”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
Vehicle: Chevy Astro 1996 – 2000
Description: angled mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 7 1/2” from mounting face
Pedal rod hole size: 5/8”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
Vehicle: Ford LTD 1984
Description: angled mounting plate built into the booster studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 1/4
Pedal rod length: 4 5/8” from mounting face
Pedal rod hole size: 5/8”
Vehicle: Chevy Suburban 1984
Description: Flat mounting plate with Bolts for mounting to firewall and 2 studs.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 7 1/2” from mounting face
Pedal rod hole size: 1/2”
pic num/desc.
1. 90-93 Astro
2. 90-93 Astro
3. 96-200 Astro
4. 84 LTD ( shows "stick out")
5. 84 LTD MC ( shows clocking plate)
6. 84 Suburban
7. 84 LTD
note on he LTD booster appears to take a master cylinder for manual brakes.( has a stick out)Bronco
Stock Bronco Steering box fittings:
5⁄8-18 Return (Areoquip adapter FCM2964)
11⁄16-18 Pressure (Areoquip adapter FCM2965)
Attachments
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