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MAURICE BLENDHEIM · 01-22-2012, 09:51 PM

Dan... I used a Wilwood (Mopar style) master cylinder in my 70' Nova. I removed the pedal assembly and ground off the original master cylinder mounting studs and redrilled the new master cylinder bolt pattern and installed 5/16 x 11/4 NF GR8 capscrews and tack welded them to the structure. This will allow you to bolt the master cylinder to the pedal assembly on the work bench. You can now make your own custom push rod and push rod retaining device. Make sure you install a jamb nut on the threaded portion of the push rod and tighten it after your adjustment. The push rod indexing hole in the back side of the master is fairly shallow, so for safety make yourself a push rod guide plate (piece of flat bar with a hole in it) between the clevis at the pedal and the back side of the master and weld it in place close to the backside of the master. You will also have to file the original holes slightly at the firewall to make a perfect fit on installation of the assembly. As for the body roll, having control of the rear suspension is the most important thing.

01-22-2012, 09:51 PM	#5
MAURICE BLENDHEIM Senior Member Join Date: Jun 2011 Location: Langley (no igloos), British Columbia, Canada Posts: 569 Likes: 311 Liked 284 Times in 87 Posts	Re: '69 Chevelle master cylinder question Dan... I used a Wilwood (Mopar style) master cylinder in my 70' Nova. I removed the pedal assembly and ground off the original master cylinder mounting studs and redrilled the new master cylinder bolt pattern and installed 5/16 x 11/4 NF GR8 capscrews and tack welded them to the structure. This will allow you to bolt the master cylinder to the pedal assembly on the work bench. You can now make your own custom push rod and push rod retaining device. Make sure you install a jamb nut on the threaded portion of the push rod and tighten it after your adjustment. The push rod indexing hole in the back side of the master is fairly shallow, so for safety make yourself a push rod guide plate (piece of flat bar with a hole in it) between the clevis at the pedal and the back side of the master and weld it in place close to the backside of the master. You will also have to file the original holes slightly at the firewall to make a perfect fit on installation of the assembly. As for the body roll, having control of the rear suspension is the most important thing.