Sifton Cams Harman & Collins

Welcome to Lockwood Engineering!

Studied under the best -Harvey J.Crane since 1996 till his passing in May 2013

We use "Harvey Crane" software as used by many in Nascar

FACT Every Lobe is not the same when it comes to lift and durations being advertised as look alike lobes - But they are different in many ways and some can make good power but are hard on vale train components like some other cam sellers that we will not mention here. Our main mission isnot to copy cams as many in the business do- we design lobe profiles and sold such designs for private label in the past and our design data has been check and approved By John Andrews of Andrews Products as Very NICE Designs.

We Are Developer's of "Master Lobe Technology"
Makers of Black Widow Cams TM. and legendary Harman & Collins & Sifton Racing Cams TM.

NOTE: all cams ground special order
Cams for all Harley Big Twin engine and sportster engines.

Cams For Pro Gas PM and Pro stock also nitrous applications.

Former M.M.I. Engine and Rebuild & Performance Instructor
" CERTIFIED" A.S.E. MASTER AUTOMOTIVE MACHINIST "

in the state of South Dakota with:

                           We ARE the Only Authorized S & S
   Engine Warranty & Engine Re-Manufacturing Center
                        In the state of STURGIS S.D. and Tri-State
      Also we are the only Authorized S & S PRO
   Tuning Center For Fuel Injection and Carburetor
                           in the state of South Dakota with:

DYNO-JET 250I With Eddy Current Braking

                     Super Flow cycle Dyn 280  with Load control
                              (ONLY by appointment please)
                    " IF S & S LOVES US WHY SHOULDN'T YOU "




   All you ever thought you knew about DRAG PIPES
When you add more inch and increase power by 50% the exhaust gases build up pressure in the pipe as RPM increases and affects the overlap process as well as the O2 sensor that sees the gases as being rich so it wants to lean the engine out but keeps leaning out the engine thru the mid range and the engine will not preform like it should. So it becomes un tuneable. Also most dual drag pipes that are located on the left end right side of the bike are two different lengths which make a unbalance exhaust system- and then you add baffles ( like putting in a cork ) and that create more back up in the pipe-the gases just cannot get thru the system - so stay away at all cost from Drag style pipes when increasing power with cam, compression and more cubic inch's -
Buy a reliable two into one exhaust system and you will be happy.

           COPY this link too see what S&S says about Drag Pipes!!
                             www.youtube.com/watch?v=KjK

Lockwood Engineering LLC