Overview Other Details Product Description Piston Set - 1988 GMC P3500 - 5.7L / 350 OHV V8 16V Chev. 4.000" Bore 68-02 - P1505(8) -PN138Dish top .080" deep. 1.540" CH. Use R40058 or M40058 rings. Other Details 12 Months / 12K Miles Product Videos Custom Field Product Reviews Write a Review Write a Review × EngineTech Piston Set - 1988 GMC P3500 - 5.7L / 350 OHV V8 16V Chev. 4.000" Bore 68-02 - P1505(8) -PN138 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *