EIGHT (8) NEW NOS STAHL SB CHEVY VALLEY OIL BAFFLES #10191. THESE ARE USED TO KEEP HOT OIL OFF OF THE BOTTOM OF THE INTAKE TO INCREASE THE FUEL-AIR DENSITY TO INCREASE POWER. IT ALSO RETAINS THE LIFTERS IN THERE BORES IN CASE OF A VALVE TRAIN FAILURE. THIS WILL KEEP YOUR ENGINE FROM LOSING OIL PRESSURE. THERE IS NO ENGINE MODIFICATIONS NEEDED TO INSTALL.MOROSO'S ARE $40 EACH!! 19.99 SHIPPING.  SEE OTHER ITEMS FOR SALE.