Ronnie Sox 'Performance Tests'

dustoff440 said

Rumor had it that Ronnie Sox "Mr. Four Speed" supposedly made a stock six pack car that was prepared by MOPAR go 13.00
which I find hard to believe based on power to weight ratio

Click to expand...

Based upon tests at Cecil County Dragoway, they did hit those Elapsed Times in stock G-70 x 15" Tires.

Best Performance Result............13.00 @ 110.15 MPH

Car........1969 Road Runner 440 Six-Barrel , 4-speed w/4.10 Gears {Dana Rear}.

Shipping Weight................#3530 lbs.
Weight-to-Horsepower........9.04 Wt/Hp

Curb Weight.....................#3765 lbs.

Later, the Plymouth Techs replaced the stock #906 Cylinder Heads with a set of 'Kenyon' Blueprinted' #906
Cylinder Heads that were milled to {NHRA Specifications of 79.5 CC's} bringing the Compression-Ratio
to an estimated level of 10.79 - 1.

Performance Results............... 12.76 @ 113.14 MPH