Chevy 400 small block

Got questions?             We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we offer advice for restoring a worn suspension and setting valve lash.   From: Carlos Callahan • Stockton, CA Q: My Mustang’s suspension system is getting stiffer as it gets older. It’s a 1991 LX 5.0L