Oceanside, California based Feuling Parts' complete camchest kits include all necessary components, from the top to the bottom of the camchest, conveniently packaged under one part number to "ensure each individual part is designed to work and function together, and to do so in total harmony," says Feuling CEO Luke Leatherman.
"They take the guesswork out of the ordering process and provide the engine with builder maximum reliability, peak performance and the coolest engine/oil temperatures obtainable."
The kits include Feuling's high-volume oil pump, high-flow camplate, Reaper Series camshafts, hydraulic roller lifters, fixed length pushrods, Timken/Koyo cam bearings, rocker arm studs/nuts, gaskets, O-rings, ARP cam/crank fasteners, washers, moly paste and Loctite.
Feuling Race Series edition kits include a Race Series oiling system - billet 7075 oil pump, Race Series lifters, and high-flow billet 7075 aluminum camplate. "The Race Series aluminum oil pump, which is 50% harder and stronger than the factory pump, holds tighter tolerances under temperature and has deeper scavenge kidney ports over the Feuling HP+ oil pump for even more scavenge flow volume."
Race Series hydraulic lifters have a full .200" of total travel, designed with a slower bleed-down rate to handle heavy valve spring pressures, increase engine rpm before valve float and feature increased roller clearance for steep ramped camshafts and clearance for the M-8 front exhaust camshaft lobe flange.
The results include 30% more pressure gear volume, 53% more scavenge gear volume and 27% more pressure and scavenge gear volume over stock for M-Eight oil-cooled motors; 42% more scavenge volume with port sizing, matched passages and holes to the engine case, 68% more oil volume to the crankshaft and connecting rod bearing, 15-25 degrees cooler engine temperatures, 15-30 degrees cooler oil temperatures and 10-30 more PSI of oil pressure for M-8 twin-cooled and oil-cooled motors.
Additional benefits include increased oil pressure, scavenge volume and engine oil flow, quieter and smoother engine operation and reduced wet sumping, blow by and oily air cleaners. Magnets in the oil pump help protect gears and pressure relief valve.
Test results show +2 HP gain and +2 ft/lbs of TQ gain to the rear wheel on M-8 engines and a 50% reduction of engine sump oil level.
The Grim Reaper 508 grind cam will give aggressive pulling power and deliver a satisfyingly 'nasty' sound, performing exceptionally well in 114" and larger cubic inch engines with added compression ratio. The stock throttle body produces an excellent powerband, and use of a high flow throttle body will increase peak power numbers.
This camshaft revs up faster than the 521 grind, sounds nastier and pulls harder, but is more difficult to tune - a high flow exhaust system and air cleaner is highly recommended for optimal performance.
High-lift valve springs are required, such as Feuling Endurance BeeHive valve spring kits or high-load valve springs (high-load requires the use of Feuling Race Series lifters). Heavy-duty pushrods are also highly recommended. Ported cylinder heads are not required, but will complement the cam and add even more pulling power throughout the range.
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