This is a USED set of GM BBC pistons. These are SRP 75F., PN 139482 # 1081118 They are for a 4.50" bore. These have a. 990 pin dia. They have a compression height of 1.650" They have a FLAT TOP.
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JE Pistons Head Gasket GM1003-030; MLS Series .030 4.165 Bore for 400 SBC
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Sbc /Sbf/ BBC 8.225-.165 Dbl Taper Pushrods Set Of 8
