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 1977-1982 Ford 6.6L 400ci OHV V8 16V "S,Z" 4.000" Bore Valve Keeper EPF555-HD EP90 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *