Andrews pulleys match the 1994 design.  This arrangement has the advantage of 50% longer internal spline length than the early design.  The new style pulleys fit both early (1985 to 1993) and late transmissions.  All pulleys intended for 1985 to 1993 transmissions must use Sputhe 8263B spacer.  All pulley kits include seals and new style lock rings.  A 6% or 9% gear ratio change is very noticeable.

BEST ACCELERATION:

29 Tooth power pulley $– 9% MORE TORQUE IN EACH GEAR.

BETTER ACCELERATION:

30 Tooth power pulley $– 6% MORE TORQUE IN EACH GEAR.

SMOOTHER CRUISING:
BETTER THAN 6 SPEED

34 Tooth cruising pulley $– 6% MORE MPH.  180 RPM drop in engine RPM @ 60 MPH.