High performance clutch system for LS engines

Written by Moore Good Ink  Columbia, SC: Ram announces a new high performance clutch set for all LS1 and LS6 engines ’97-’04. Assigned with part number 98931HD this new clutch set is now available from their Powergip HD clutch series, a genre of clutch sets designed for properly geared applications with up to 650 rear-wheel horsepower. When combined with a RAM flywheel (PN 1550 steel or 2550 aluminum), this new clutch can also be installed on ’05-’09 LS2 and LS7 engines.   The LS Kit: This new 11-inch clutch set includes a cover assembly and a clutch plate. It provides clamping pressures of 2,900 lb compared to 1,700 to 2,100 lb of the original, depending upon the model.   The Clutch Plate: To provide solid street/strip performance yet agreeable drivability, Ram combined their 900 series organic friction material, similar to that used on high horsepower drag racing applications, with poly-coil springs in an eight-spring 26-spline clutch hub.  To obtain a smooth engagement, the clutch disc incorporates the superior marcel carrier as opposed to the ageing paddle-style clutch disc.   The Marcel Feature: To cushion engagement, sixteen metallic pads (eight per side) are riveted to the marcel carrier.  The marcel carrier has a slight spring wave measuring approximately .020 inches. As the clutch is engaged on take-off, the marcel compresses and reduces the potential for chatter and the effects of aggressive engagement, unlike similar clutch material used on a flat carrier without the marcel wave.   The Clutch Hub: Stock hubs usually feature five or six compression springs in contrast to RAM’s eight, which are urethane encapsulated. Compared to the...

The 1100-A: a new Weldon pump fueling 1000 horsepower: carbureted or fuel injected

Written by Moore Good Ink Cleveland, OH:  Weldon Racing Pumps has launched its new continuous-duty 1100-A flow-through fuel pump. This all-metallic design follows their successful, smaller 600-A pump, and like it, serves both carbureted and fuel injected applications. While the 600-A was designed to be quiet in operation and support 600-plus horsepower, the 1100-A is also quiet but easily provides fuel for 1000 horsepower. At carburetor pressure, the 1100-A flows 157 gallons per hour @ 30 PSI while drawing 7.8 amps. For fuel injected applications, the 1100-A generates 80 PSI while flowing 110 gallons per hour and drawing only 14.8 amps. (See attached graph illustrating fuel flow and amperage draw while under pressure.) Combinations: With fuel injected applications, the 1100-A should be combined with a bypassing regulator such as Weldon’s A120. For carbureted machines, the 1100-A should be used in conjunction with both a bypassing regulator, (like a Weldon A15 or A30) and a blocking regulator (Weldon A2046). With either system Weldon recommend the installation of two fuel filters: a 100-micron filter before the pump and a 10-micron filter after the pump. Internals: The internals of the 1100-A are contained within Weldon’s familiar stainless steel type 304 housing with clear-coat anodized end caps made of 6061 billet aluminum. The fuel-cooled motor drives the pump element by spline engagement. The pump element is located at the inlet end and is sandwiched between top and bottom 0-ringed housings made of 6061 hard-coated anodized billet aluminum. The pump element (ring, blades & rotor) are all constructed of steel, and like all the moving components within this pump they are precision-lapped. Aerospace standards:...

A new initiative from Roush Yates brings amazing value to all Ford racers

Written by Moore Good Ink Mooresville, NC: Have you ever wondered where all the surplus Ford engine and chassis parts go from the various NASCAR racing series?  In high-end Sprint Cup, Nationwide, Camping World Truck, and ARCA divisions, all racing parts have a finite life. At Roush Yates, the racing parts are systematically removed, tested, refurbished where necessary, and are now made available through the Roush Yates Performance Parts division, a subsidiary of Roush Yates Engines in Mooresville, NC.  From Daytona-winning cylinder heads, valve trains, and high-tech manifolds to the latest technology in chassis parts, these high-tech parts are now available to all grassroots racers, whether oval track, drag racing, boat racing—and they are probably the greatest value ever!  For further information contact: Roush Yates Performance Parts 261 Rolling Hill Road, Suite 2A Mooresville, NC 28117 Telephone (704) 662-6982 or visit www.RoushYatesParts.com...