ATI SB Chevy 168 Tooth Flexplate - SFI - Internal Balance R090003M They increase the manifold plenum

They increase the manifold plenum area and provide the maximum thermo barrier between the manifold and carburetor

Compatible with stock lower control arms modified with UB Machine UBM40-3303 or Allstar ALL56250 weld-in threaded sleeve

Designed specifically for 1996 Corvettes or LT4 manifold users

095" wall rear tube

ATI SB Chevy 168 Tooth Flexplate - SFI - Internal Balance R090003M They increase the manifold plenumIn ATIs tradition of staying ahead of rampant increases in HP, which are commonplace in the performance industry today, ATI has developed the Superplate flexplate. Superplates are manufactured from a super strong material with a 90,000 lbs. tensile strength and 80,000 lbs. yield strength to withstand thousands of cycles. Superplates are laser machined to avoid the heat and stress stamping inflicts on them. The crank bolt holes are bored in position to