I’ve put disc brake boosters on 2 different manual drum cars. Both times no additional parts were required. The drum brake master cylinder fit the booster and the boosters’ pushrod was the correct length. Yours may or may not need a length adjustment.
There are 2 pushrod holes located on the brake pedal lever, one for manual and one for power brakes.
The power location is the lower hole closer to the pedal.
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68 GTO,3860#
Stock Original 400/M-20 Muncie,3.55’s
13.86 @ 100
Old combo:
462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's.
1968 Pontiac GTO : 11.114 @ 120.130 MPH
New combo:
517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's
636HP/654TQ
1.452 10.603 @ 125.09
http://www.dragtimes.com/Pontiac-GTO...lip-31594.html
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