Overview Other Details Product Description Other Details 12 Months / 12K Miles Product Videos Custom Field Product Reviews Write a Review Write a Review × Engine Tech 1959-1963 GM 6.4L 390ci OHV V8 16V Cad. 4.000" Bore Valve Keeper EPF555-HD EP62 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *