I had a 440 running low 12 - hi 11s with a GM dual snorkel breather with 4" alum dryer ducting running to both sides of radiator support. I raced without a filter. Put in a K & N 3 x 14 filter and picked up .10 in the quarter mile.
PSO headed 632 from MM. Cracked cylinder, loose valve seats, low oil pressure, low cylinder pressure. ..... Now its a door stop....
