Dear Welder Series…
I have a 1934 Plymouth coupe I am building into a street rod. I have ECI front Granada discs on a Fat Man front end. I am running 10″ rear drums on an 8 inch Ford rear and have a 7″ single booster with a 1″ ECI master cylinder [corvette style]. I see you show a 4.5 inch pedal ratio for power brakes. Would that be what I need with a 7″ single booster also? I bought an older Master power setup that came with a 6.1 pedal. The car is small block Mopar and auto. Thanks for any help. Dave

Dear Dave…
Dave, you can use the pedal that you have.  The 4.5:1 ratio works well with power brakes, but you should be o.k. with that 6:1, too.  The pedal pressure will be lighter and the pedal will travel farther before the brakes actuate.

Thanks for looking at Welder Series parts.

Paul Horton