drum to disc rear
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Member
Joined: May 2000
Posts: 157
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From: Daytona beach, FL
drum to disc rear
any of ya did the switch? I just did it on my car but the breaks are kinda weak...what need to be changed? master cylinder? prop vlave? both?
Thanks
ps: car is 85 Z28, rear is out of an 84 TA
Thanks
Thanks
ps: car is 85 Z28, rear is out of an 84 TA
Thanks
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Did you bleed the brakes after you did the swap?
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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Supreme Member
Joined: Jul 1999
Posts: 2,767
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From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
You forgot to replace the prop valve. Check this link out: 10 bolt swap
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'87 Trans Am
S/D TPI retrofit including functional PassKey,
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If you live in Southeastern US, check us out!
South East Thirdgen
ASE Master Tech + L1
Savannah, GA
'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--
'97 Bonneville SSE
Thread Starter
Member
Joined: May 2000
Posts: 157
Likes: 0
From: Daytona beach, FL
thanks for the info guys...I figured that I needed the prop valve (which I have) but I also find out the master cylinder has a diff part number too...so do I need to change it??
Thanks
Thanks
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Yeah, the m/c was different between J50 (disc/drum) and J65 (4-wheel-disc) cars. The piston's larger inside the J65 master cylinder.
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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
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Supreme Member
Joined: Jan 2001
Posts: 1,978
Likes: 0
From: PA
Car: 88 Firebird WS6
Engine: 350 TPI
Transmission: T56
Axle/Gears: 3.42
......your axles won't fit inside the rotors without machine work.
Unless you get axles off the disc brake car.
------------------
'88 Camaro RS 2.8L
'88 Formula 350 (Too many mods to list...)
Unless you get axles off the disc brake car.
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'88 Camaro RS 2.8L
'88 Formula 350 (Too many mods to list...)
Supreme Member
Joined: Jul 1999
Posts: 2,767
Likes: 2
From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
New master cylinder? My brakes work great, no problems from what I can "feel" with just the J65 prop valve and old J50 M/C. Maybe I have yet to feel peak performance?
------------------
If you live in Southeastern US, check us out!
South East Thirdgen
ASE Master Tech + L1
Savannah, GA
'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--
'97 Bonneville SSE
------------------
If you live in Southeastern US, check us out!
South East Thirdgen
ASE Master Tech + L1
Savannah, GA
'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
-->14.97 @ 94.9 MPH<--
'97 Bonneville SSE
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