Our poly-urethane bushed motor mount assemblies provide a high performance, direct replacement alternative to bonded rubber factory mounts and are available for small block and big block applications. A unique, double-shear, through-bolt design eliminates any chance of motor mount separation during normal use. Fixedstyle mounts use shims on either side of the urethane bushing to allow the fore/aft position of the motor to be varied within a 1/2” range centered at the stock position. Adjustable-style mounts (small-block only) feature a slotted engine plate allowing three inches of adjustment centered at the stock position. The mount features graphite impregnated poly-urethane bushings with seamless internalsleeve and external housing. Transferred vibration is increased over factory levels but without the harshness commonly found using completely solid mounts. The welded assembly features heavy-duty motor plates (Big Block 1/4” thick, Small Block 3/8” thick) with a 3/16” all, tubular bushing housing. Frame adapter plates are 1/4” thick with slotted motor mount holes to make allowance for chassis variances and simplify installation. All mounting hardware is grade 8 and included.