What size are the valves on those heads.
A lot of companies make pistons for 347's...Ross, SRP, JE..etc..
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1990 Mustang GT-
347 Stroker-Tremec 3550-Compucar Nitrous, AFR, Systemax Intake, AFM, 30lbers, 70MM TB, 76mm MAF, full suspension and lots more
1995 Chevy S-10
406 SBC, Dual tunnel ram, Dart heads, Nitrous, full tub, 4-link, adjustable drag shocks, coil-overs, 9in rearend, 4.56 gears...etc
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