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Greg G.

TECHNICAL BULLETIN--Corvette C5 & C6 B-pillars-4-25-12

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Greg G.

Technical Bulletin--4-25-12


Corvette C5 and C6 Models--B-pillars and Driver side floor:


Removal of the B-pillars (and OEM/BTM arch) above the window sill lines is permitted if replaced with a NASA-legal full competition racing cage. For TTA-TTF, the BTM roof line must remain intact, and the window frame and roof channels must be left intact. For TTS/TTU, any changes to the roof line will result in the Modification Factor assessment listed in the rules.


The OEM/BTM driver side floor top layer of aluminum and balsa wood under the seat may be removed without a points or Modification Factor assessment for the purposes of gaining head room for the driver. Looking from the underside the floor pan must be unchanged, and the OEM/BTM metal supports where the seat studs attach must be unaltered.

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