Feuling Parts

Feuling Reaper Series Camshafts for M-8 Engines

Reaper camshafts from Oceanside, California based Feuling Parts have wide lobe separations to produce very wide power bands, smooth camshaft lobe ramps that are easier on valve train components, eliminating excessive valve train noise and wear, and giving better throttle response, increased MPG, easy starting and a unique idle sound.
The Reaper 405 is a workhorse, producing a wide powerband, increasing torque and HP throughout the entire rpm range when compared to stock. A direct bolt-in replacement for Milwaukee-Eight engines, it can be used with stock valve springs, pushrods, lifters and exhaust.

Reaper cam series

The 405 will respond well with slip-on mufflers and/or complete exhaust systems and a high flow air cleaner. Feuling recommends using free flowing mufflers with smaller cores for best lower rpm power and pull.
The valve lift open close duration at 50” lift and TDC lobe centerline is .395 4 ATDC 24 ABDC 200 .068 103 for the intake and .405 36 BBDC 11 BTDC 205 .049 108 for the exhaust; the rpm range is 1,700 - 5,700 with an overlap of 7.
The Reaper 465 is an accelerator, producing solid bottom end performance with substantial gains above 2,800 rpm when compared to stock.
This direct bolt-in replacement for Milwaukee-Eight engines can be used with stock valve springs, pushrods, lifters and exhaust. It too will respond well with slip-on mufflers and/or performance exhaust system and air cleaner. Use of performance valve springs is not required but may result in a quieter, smoother running valve train. This cam will also respond well with increased bore and/or compression.
The Reaper 521 cam is described as having “aggressive pulling power with a satisfyingly “nasty” sound and will shine in 114” and larger cubic inch engines with added compression ratio.”

Race series kit

Feuling says that ported cylinder heads are not required, but that they will complement the cam and add even more pulling power throughout the range and that the stock throttle body produces an excellent powerband; use of a high flow throttle body may increase peak power numbers. A high flow exhaust system and air cleaner is highly recommended for optimal performance. Feuling also recommends matching this cam with its Race Series oiling system and says that high lift valve springs are required on stock cylinder heads, but that SE cylinder heads already have high lift valve springs and do accept the 521 grind cam; heavy duty one-piece pushrods are also highly recommended.
The 508 cam, ‘The Grim Reaper’ (also for aggressive pulling power with their hallmark “nasty” sound), revs up faster than the 521 grind, sounds nastier still, and pulls harder but is more difficult to tune, though is an excellent choice for 114” and larger cubic inch engines with added compression ratio. Though not required, ported cylinder heads will complement the cam and add even more pulling power throughout the range. 

HP+ series kit

The stock throttle body again produces an excellent powerband, though use of a high flow throttle body will increase peak power numbers. A high flow exhaust system and air cleaner is highly recommended for optimal performance and matching with Feuling’s Race Series oiling system is recommended. High lift valve springs are required, and heavy duty pushrods are highly recommended.
 Valve lift open close duration at 50” lift and TDC lobe centerline is .508 21.5 BTDC 36 ABDC 231 .180 97.5 at the intake and .511 45 BBDC 9 ATDC 243 .146 104.25 at the exhaust with an rpm range of 2,250 - 6,250 and overlap of 30.5.

External fastener kit for '17-'19 Baggers

At the top of the range of M-8 compatible Reaper cams, Feuling describes its 592 grind as “the Big Nasty” requiring you to “put your big boy pants on and get serious with bore size, ported cylinder heads and high flow throttle body.”
An aggressive camshaft, it requires high lift and higher load valve springs, performance pushrods and lifters. A high flow air cleaner and triple stepped exhaust pipe are highly recommended, and Feuling also recommends matching this cam with its Race Series oiling system. High lift valve springs are required (such as the Feuling Beehive valve spring kit); heavy duty pushrods are highly recommended.
Also seen here, Feuling camshaft kits for Milwaukee-Eight engines include camshaft, lifters, inner cam bearing, cam/crank hardware and a gasket/O-ring kit that allows for use of the factory one- piece pushrods or the company’s own “optional and recommended” heavy duty 0.165” wall one- piece pushrods.

External fastener kit for '18-'19 Softails

HP+ Series kits include the HP+ hydraulic roller lifters for 405 and 465 grinds; their Race Series kits include Race Series hydraulic lifters, which have a full .200” of total travel designed with a slower bleed down rate to handle heavy valve spring pressures and increase engine rpm before valve float.
They feature increased roller clearance for steep ramped camshafts and clearance for the Milwaukee-Eight front exhaust camshaft lobe flange. These are the kits recommended for 465, 521, 508 and 592 grind installs.
Newly available from Feuling, M-8 ARP dress-up external fastener kits for 2017 - 2019 Baggers and 2018 - 2019 Softails are made in high grade stainless steel and include 12-point engine case bolt kits, external engine kits, external primary and transmission kits and chassis and trim kits for Softails and Road Glides.

FEULING PARTS
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