Welcome to Lockwood Engineering!
Developer's of "Master Lobe Technology"TM.
In Loving Memory of Harvey James Crane Jr. known to a slight few as Bubba Crane ( given the Nickname from his brother in the old
has passed away 5/31/13 and will be with his loving wife Maxine - Harvey was one of many mentors that I have had the pleasures of consulting and visiting with the last 16 years. Our last conversation was 5/28/13 @7:18 am Florida time. Harvey will be missed by many in the Industry including us-Services where held at the First Baptist Church in Daytona Bach on Saturday at 2:00 Very sad day.
Thanks to Harvey Crane Jr. for his input to the industry on camshaft design and new techniqes to designing cam lobe shapes.
Makers of Black Widow Cams TM.
Sifton Racing Cams TM.
for Harley Davidson TM
NOTE: All performance Camshafts listed on this Web Site are for off road use only !!!
How do you pick a cam?
How far should the intake valve be open at 75 degrees ATDC?
When does the intake valve close and stop the Intake flow process-and
begin the squeeze well is isn't at .053" thats for sure so when does it
When the exh port is to big stuff a big tulip valve and add
some real estate back into port. Tulip valves where used just for this
whether or not it is the intake that is over ported or exh.
Can the Int valve cause or be a restriction in the system?
How far should the Exhaust valve be open at bottom dead in relation to intake port flow ? Blow Down!
you use wilder exh lobe on a exh port that is flowing very well what
happens to your BS HP- goes out of control.look at Tq curve.
Exhaust gases will not expand more than 7 degrees
10 degrees ABDC the valve seat does reconize piston movement So again how far should the exh valve been open at BDC.
Does a lazy intake port need more over lap to initiate flow because of low velocity due to larger valve for high lift flow ? The more you can see of the back of the Int. valve the more power you will see.
If you can't fill the cylinder stuff it with a piston-higher compression.
your cylinder head flow numbers make a difference It is the relation
between intake air flow vs exhaust air flow @ BDC & exhaust valve
Harman & Collins For Vintage Automotive & MC
The Late Kenny Harman & Clifford " Cliff" Collins
over 1000 vintage profiles Both stock and performance
From Flat Head Fords....To........
Clifford Collins a Graduate Engineer made racing cams for
Mickey Thompson-Bud Hare - Johnson Motors JOMO cams
Art Sparks racing Triumphs & BSA's - A.J. Lewis's Triumph
Like Ed Winfiel Another great Cam manipulator Cliff
Manipulated Roller and Flat Tappet Cam designs for
People like Clay Smith -Jack Engle
as well for Keith Black and
Chet Herbert in the days and was even employed
by Crane Cams........and was "fired for lying"
To the owner Harvey J. Crane Jr. the larger share holder
Of Crane Cams at that time- Crane also purchased all of the Harman & Collins Cam Company and later sold those Assets To
Mr. Dimitri "Dema" Elgin Of Elgin Cams Redwood City Ca.
Later to be Re-named
D. Elgin Racing Cams to avoid the confusion of Elgin Industries.
These assets were later sold to Dema's former
employee Craig and his Wife hence forth Lockwood EngineeringTM.
replacement cams Like
or similiar too H.D.S.E. in Gear Drive
but with more Area under the lift curve for more power!
Camshaft design and Re-design using Master Lobe Technology TM.
C.N.C. Ported Twin Cam cylinder heads with
Bronze Valve guides- With Manley Performance TM.
" bead-lock" 1.900 & 1.625 Valves
Manley Bee-Hive Valve Springs.
Also: Exclusive Signature Series Cams From Dema Elgin For SCCA - NHRA - Nascar - Bonneville
Our new site is under construction
2013 NHRA Lucas Oil Screamin'Eagle schedule
Harley-Davidson Master Engine Technician @ work
Dyno-Jet 200 and Super Flow 901 on location
S&S Sidewinder - EFI Protune & Engine warranty Center for all S&S Engines
We have been rebuilding engines for 38+ years in our full line machine shop. Other services available are not limited to just head work on Harley-Davidsons, We also do Porsche, BMW
We also do over bores & re-sleeve 2 and 4 stroke engines.
Sleeper Cylinders that keep your original appearance for 1984-up Harleys.
Larger bore sizes for more HP & Tq like 4.125 in your original Harley Twin Cam cyl. that is 107 with 4" stroke! Or 3.625 bore out of your stock evo cylinders. Crankcase boring required for these Cylinders Evo or Twin Cam.