Proform Magnetic Deck Bridge SPBM4 Our advanced thermoplastic bushings absorb

Our advanced thermoplastic bushings absorb vibration and noise and deliver better handling and longer life

7 Degree Machined Steel

42RE / 44RE / 46RE / 47RE / 48RE

3HP high-torque gear reduction

Engine and Performance Recommendations for this cylinder head: Serious street perfornmance

Proform Magnetic Deck Bridge SPBM4 Our advanced thermoplastic bushings absorbThis will go over cylinder bores up to 4 1 2". This is used to check piston to deck clearance, and it is magnetic so it holds firmly in place. Dial indicator 66962 is sold separately. PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from