Rich, The correct bell for a 70 L78 is the 621 bell. Also my 70 L78 has a 3973456N flywheel. But I think it's a service replacement due to having a late 1971 date code. I can check with a few other 70 L78 owners to see what they have.
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1970 z28 4speed cranberry red white stripes standard saddle interior.
1970 L78 camaro cranberry red standard black interior original drivetrain.
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