McLain's Automotive is proud to offer the very finest racing carburetion available for any class or rules package, carburetors by Competition Carburetion. These carburetors are hand built personally by Bobby Oliver for the particular application, these carburetors are NOT mass produced. A great carburetor package is mandatory if maximum horsepower, durability and drivability are required by you, the racer.
Right now is your car difficult to drive off of the corner, loading up, burning excessive fuel if on methanol, sluggish on a restart or down on power? Does your 4412 have the large "Reo" style accelerator pump housing? If so, the carburetor package is probably out of calibration and needing attention. Many people who build carburetors only look at maximum horsepower and wide open throttle horsepower characteristics and completely ignore or fail to effectively calibrate idle and transition circuits for maximum effectiveness. Not realizing the fact that they are never out of the metering picture, they are always working even when the throttle is wide open. So if they are too lean or too rich(most likely) how do you design a propper metering package around that? Customers who have switched from locally built carburetors to a carb package from Competition Carburetion have often reported incredible increases in fuel mileage(particularly on methanol), greatly extended oil change intervals and much better performance both on the track and driving through the pit area with the plugs staying clean and the engine lasting much longer between freshenings.
Online Carburetor Model Selection Guide at Holley.com..
Photos at Competition Carburetion, building and testing carburetors.
Click on the link below to see a story published in Stock Car Racing Magazine on fixing carburetor squirter pull over problems on a Holley 2 barrel carburetor.
Carb packages can be built using your core(for 4412 two barrel an old core is often the way to go) or a completely new carburetor can be built using all new parts. Prices listed are for carburetors that are tested and ready to run. All carburetors are built to pass tech gages, venturies are sized to the maximum allowable size without leaving any trace or tool marks. New boosters that are sized and selected for the necessary metering package are installed and positioned for maximum flow and performance. Carb will then test TECH LEGAL for your track. Throttle shafts are bushed and throttle blades are aligned for smoothest operation. The metering package is designed and custom calibrated for each carburetor body again, they are NOT mass produced. If you want the best running carburetor in town you need a Competition Carburetion carburetor package.
