1968FormulaS340 said If you are replacing everything anywayÂ….. Go with 3/8". 1/2" is only needed at extreme levels. Click to expand...
Dustbuster said Ma only offered 2 sizes from the factory: 5/16" and 3/8" (even on the Hemi!) If you're gonna upgrade go with the 3/8". It'll be more than sufficient. Click to expand...
lead69 said 3/8 is more than fine,it takes some h.p. to need bigger,Ive run/seen some pretty serious engines on 3/8 and even had a couple 12 second cars with 5/16. Click to expand...