Pro Style oil recovery pouch Because of the rotation of the crank, the oil being thrown off it goes to the right side of the pan. At high R. P. M. 's this oil wants to bounce off the side of the pan back into the crank. The oil being thrown around in the crankcase creates a heavy atmosphere, which the rotating assemble has to turn in. The resistance of this atmosphere absorbs horsepower from the engine. Pro-Style oil pans the right side of the pan is moved out away from the crankshaft creating an oil recovery pouch, where the oil coming off the rotating assembly can collect and drain into the sump. This design thins up the atmosphere in the crankcase and frees up horsepower. Why plugs ? The main objective of a Pro-style oil pan is to allow the oil coming off the rotating assembly to get away from the crank. This is accomplished by moving the side of the pan out, giving the oil more room to escape. Since the side of the pan is moved out from the inside of the block mounting bolts to the outside, it becomes necessary to bolt the pan to the block by going through the pan. To accomplish this Canton installs access plugs in the bottom of our pans. Some of Cantons' competitors use access tubes that run through the pan and surround the mounting bolts. While this may seem like a good idea, it defeats the purpose of moving the side of the pan out. The tubes interfere with the oil trying to escape the rotating assembly and reduce the effectiveness of the pan. Pro Installation To help installation we recommend the use of one of our Canton stud kits with washer faced nuts. (flange nuts). Install the pan with the engine in the upright position using a 1/4" drive ratchet set. The washer faced nuts will sit flush at the top of the socket making it easier to start the nut. It is recommended that Teflon® tape be used on N. P. T. plugs to help seal and allow for easy removal. Highs and lows Too much oil in a wet sump oil pan causes more problems than it ever solves. High oil levels that put the oil above the windage tray allows oil to be picked up by the rotating assembly. It then becomes whipped up, foamed, and aerated. It also can be thrown up onto the pistons where it will absorb heat. This hot aerated oil will not hold pressure and as a result cause pressure problems. The highs and lows of it are: HIGH oil levels will result in HIGH oil temperatures and LOW oil pressure. Aeration becomes most severe at high r. p. m. s and the resulting drop in oil pressure could give the impression that there is not enough oil in the system, while there is too much. " T " Sumps vs " L " Sumps Canton T styled sump oil pans are built to provide the oil capacity needed by race engines in applications that have cross-members or steering components located directly under the engine. They tee out on both sides of the pan to gain extra oil capacity and to provide ground clearance. The L styled sump design was originally developed in the 80's for sprint cars back when they were using wet sump oil pans. The narrow sump configuration offers superior oil control by keeping the oil more concentrated around the pickup. If your chassis set-up and engine allows for it, these pans will deliver the best oil control in circle track racing. Our aluminum versions of these pans are very popular for Dirt and Asphalt Modified's and in limited sprint classes.Pit Stop USA offers Canton Power Pan Competition Circle Track Wet Sump Oil Pan - SB Chevy Pre-80 Blocks 11-186 at low everyday prices. Be sure to check out all of our products from Canton Racing Products including Canton Racing Products Small Block Chevy Oil Pans.