SUNCOAST Pro Street / Competition Automatic - 87-Up Except Corvette COA-91100A

The COA-91100A is a rugged, race-ready version of the Turbo Hydramatic 700-R4 automatic transmission, purpose-built for serious street and bracket competition. Engineered to withstand high loads and aggressive driving, it features robust five-pinion planetary gearsets, a heavy-duty sunshell, billet servo, and a super input drum to handle repeated abuse without failure. The inclusion of a billet forward piston and high-performance band improves hydraulic apply control, while the “Z-PACK” 3–4 clutch assembly delivers enhanced holding capacity and smoother engagement during demanding shifts. Fully assembled in the USA to Coan Racing’s stringent performance standards, the COA‑91100A is an ideal turnkey solution for enthusiasts seeking both durability and no-compromise performance in a compact automatic package.