Originally Posted by gtx6970
I used to have a 69 Roadrunner hemi with power disc brakes.
I could get the plug out , it just took some ingenuity and flex extensions.
Getting the booster off was a different story though. And that required booster R+R


I do move the booster aside when changing the spark plug tubes, but that isn’t very often. As gtx6790 said with the right extensions as per my pic and a bit of patience you can change the #7 plug with the booster in place, I do it all the time.

Here is another pic, a slightly different master mounted in this pic as I was messing around with braking response with 1 1/8 versus 1 1/32 bore masters. A recent pic

IMG_0464.jpeg
'69 Hemi Charger 500, ‘70 U code Challenger R/T
(These and a bunch others at www.dkowal426.com)

P.J. O'Rouke: "The old car ran perfectly, right up until it didn't."