RAM Clutches Introduces StreetDual Clutch for Corvette ZR1 and LS9 Crate Engines

Written by Moore Good Ink Columbia, SC, August, 2009: RAM Clutches are well-known to drag racers whose engines exhibit more than 2,000 horsepower and RAM’s street repertoire is no less efficient. The company has just announced a new twin-plate high-performance DirectFit StreetDual (PN 90-2115) clutch/flywheel assembly for the ZR1 Corvette supercharged LS9 engine and GM Performance Parts LS9 engines. This assembly is directed at street applications and is a bolt-in upgrade for the factory twin-disc hardware. Its dimensions are similar to the original: overall height is comparable to stock measured from the crankshaft flange to the fingers of the cover assembly and it has a diameter of 10.5 inches. From here on out, the benefits of the DirectFit StreetDual assembly over the stock unit are exemplary. The diaphragm clutch assembly weighs a whopping 10 pounds less, exhibits a 2400-pound clamp load, and employs a nodular iron pressure ring for strength. The twin friction discs employ RAM 300-series organic material, the chief advantage being that organic friction material has superior blend of holding power and improved drivability without the tendency to chatter on initial clutch release. Concurrent, the top clutch disc springs are stiffer than stock and by encasing them in urethane, their rate of compression increases approximately three times that of an uncoated spring. Simple computer tweaks easily elevate the LS9 power rating to more than 700horsepower. As a result, the RAM StreetDual assembly has the capacity to capture as much as 1000 horsepower at the wheels while providing stock drivability. A 900 series disc version is available for higher horsepower applications (90-2115N).  Since this clutch/flywheel assembly will combat...

New engine block for Small-Block Chevy: World Products’ launches Motown II, a new cast iron engine block that is also available with bolt pattern for LS cylinder heads and the taller LS deck height.

Written by Moore Good Ink Ronkonkoma, NY: By 2008 the tooling for World Products’ cast iron engine block for the Small-block Chevrolet needed replacing. It had served them well since the 1990s, but the cost of re-tooling was substantial: $570,000.   Since they were obliged to invest so heavily in new tooling, they determined to incorporate every advantage learned during twenty-five years of casting engine blocks. And they did. Among the host of new features, they included a new priority-mains oiling system for better lubrication of main bearings, cam bearings, and valve lifters. To eliminate potential camshaft oiling troubles that occur under high valve spring loads, the camshaft oiling holes were moved from the regular 6 o’clock position to 5 o’clock. A new water jacket was established around the camshaft tunnel. Though the block is machined to the standard cam bore size, it can accommodate the stronger, larger diameter 55mm camshafts—a bonus in all race engines, especially stroker engines. And instead of continuing the age-old convention of using tabs on the outside of the engine casting for machining purposes, they devised a new central internal machining location. This pioneering measure ensures the crankshaft, camshaft, and every other location is exactly central and symmetrically correct on each and every World block. Check out the machined holes and other openings on the Motown II; as they say in engineering circles, “They are dead-nuts on!”   In addition, this new engine block can be poured at the foundry to one of two configurations: either as a regular small-block Chevrolet with a deck height of 9.025 inches, which accepts the small-block cylinder heads or, alternatively,...

Lightly Used Racing Clutches and Brakes from Roush Yates Performance Parts:

Written by Moore Good Ink Roush Yates Performance Parts currently has stocks of lightly used 7.250-inch Quarter Master triple-plate racing clutches and 13 x 1.250-inch brakes at their Rolling Hill Road, Mooresville store. New parts are the prerogative of NASCAR teams, and the Roush-Fenway/Yates Racing Cup, Nationwide, and Truck Series team vehicles are constantly being replenished with new parts. The parts removed represent excellent value and can be ideal for professional and Sportsman racers alike.  Quarter Master 7-1/4 inch triple-plate racing clutch, part number 397050: A. Input shaft diameter: 1-5/32 B. Spline: 26 C. Grooved pressure and floater plates for cleaner and cooler running D. Stiffer cover design E. Extremely high torque capacity F. Lower moment of inertia Quarter Master Racing Clutches specifies a minimum thickness of .094” for their clutch plates. Typically, these Roush Yates used plates are of .100 inch in thickness or thicker. They are visually inspected for wear and rejected if thinner than .100 inch. Any disc found with excessive wear, evidence of overheating or cracking is not for sale. Prices start at $135.00 Brembo or PFC Brake Rotors and Pads A. Rotors: 13-inch diameter x 1.250-inch thick B. Fits inside standard NASCAR 15-inch wheel C. Ideal for cars requiring 54mm or 61 mm surface pad area D. Brake pads have very little wear E. Top hats and rotors sold separately if desired   Prices start at $100 per wheel (rotor and hat); pad sets start at $50 Check website for monthly specials and for further information contact: Roush Yates Performance Parts 261 Rolling Hill Road, Suite 2A Mooresville, NC 28117 Toll-free telephone (877) 798-7977...

Weldon Racing Pumps revs up fuel filter repertoire: Additional port sizes now available

Written By Moore Good Ink Oakwood Village, OH: Pure, uncontaminated fuel is the lifeblood of an engine. Just as pieces of plaque can block the arteries of your heart, so can tiny roaming bits of dirt and debris clog your engine’s fuel system and stop it dead.   Regardless of origin, even the “cleanest” of fuels can harbor flotsam, the very reason that Weldon Racing recommends two separate filters to capture these contaminants before they reach the carburetor jets or fuel injection nozzles. It is standard practice to place a filter (coarse) after the fuel tank and before the fuel pump as well as another filter (fine) after the fuel pump to capture any remaining contaminants.   Weldon Billet Fuel Filters are manufactured with the same exacting specifications and stringent quality requirements as their Racing Fuel Pumps. Weldon’s Premium Filter media, whether their replaceable paper-cellulose or cleanable stainless-steel mesh types, protects carburetors and injectors from contamination.   According to Racing Products Manager Jim Craig, “Originally we had only the -12 O-ring port version, but we had customers purchasing our fuel pumps that had only -6 or -8 ports, and the correct fittings were difficult to obtain.  We decided, therefore, to offer two additional versions to accommodate various port configurations”. Weldon urges the use of the 100-micron filter placed before their 600-A and 1100-A fuel pumps as well as any other manufacturers’ electric fuel pump; the 40-micron (paper-cellulose) filter placed before all Weldon Billet and Cast-Bodied pumps; and the 10-micron (paper cellulose) filter placed after all fuel pumps and before the carburetor or fuel injectors. Features: Three port configurations -12,...

New Composite Dash for ’70 -’81 Firebird, New Management and Headquarters, and New Website

Written By Moore Good Ink Carson City, Nevada – Classic Dash has recently announced a new, molded ABS composite dash panel to suit the 1970 to 1981 Pontiac Firebirds.  In common with all the company’s previous composite dash panels, this new Pontiac Firebird dash has a modern, clean look and is impregnated with a UV inhibiter that protects it from sun-damage. It is available in carbon fiber, brushed aluminum, or classic black finishes.  All Classic Dash panels are offered in three forms: with or without gauges, with or without gauge openings, or complete with gauges installed. Twenty-two different styles of gauges are offered, including 10 variations from Autometer®, 8 from Classic Instruments®, and 4 from Dolphin Instruments®.  Prices for complete Classic Dash instrument panels for the ’70 -‘81 Pontiac Firebird start at $699.95   The Pontiac division of General Motors debuted its second generation Firebird in 1970.  Its new F-body design, a “swoopy” body style with an undeviating line running from the top of the rear window to the lip of the trunk lid, remained the same for eleven years, becoming the longest period-style of the Firebird’s history.   Ordering these new dash panels is simple.  Classic Dash has recently given its website a new make-over with easy navigation and website access to ordering.  The new management is led by Greg Wambold and the new state-of-the-art manufacturing facility is located in Carson City, Nevada. Staff members are friendly and knowledgeable and can easily answer any technical questions you may have.   For further information contact: Classic Dash, 5225 Grumman Drive, Suite 100, Carson City, NV 89706 Telephone (866) 882-3525...