Secrets Of Speed Society
Lion Speed Head IV
updated 3-24-2017           NOW TAKING ADVANCE DEPOSIT ORDERS
Model A & B Ford High Compression Cylinder Head
Fits 1928 to 1934 Ford Four Bangers
NOW TAKING ADVANCE ORDERS
$100 DEPOSIT* IS NON-REFUNDABLE 
PRODUCTION START DATE IS JULY 1ST, 2017
DELIVERY DATE IS ESTIMATED TO BE NOVEMBER 2017 (+ -)
Checks & PO Money Orders only please.
Overseas customers please contact us for instructions.
SPECIFY HOW MANY AND EITHER IRON III OR ALUMINUM IV

Make Checks out to and mail to:
Scalded Dog Speed Parts
3860 CAIN RUN RD
BATAVIA OHIO 45103

cy4fn@outlook.com
513-724-0700

UPON RECEIPT OF DEPOSIT* YOU WILL BE SENT AN INVOICE/RECEIPT​ BY MAIL.
Only deposited* orders are guaranteed a Lion Speed Head.
Stay tuned to this page for news and update on production.
 


QUESTIONS?? 
Send me an email (cy4fn@outlook.com
or call 513-724-0700 - M-THUR, EST, 9 am -5 pm
Closed Friday-Sunday
Leave short message if no answer 


Secrets Of Speed Society (S.O.S.S.)
Members get 5% off these parts




  • * DEPOSITS RULES:
  • There is a $100.00 non-refundable deposit required for each head ordered. No other waiting list is offered.
  • This guarantees that you get as many heads as you want. . . . . this included Dealers.
  • We seldom, if ever, have extra heads to sell off the shelf.
  • We make these heads once a year.
  • PLAN ACCORDINGLY.
  • If you chicken-out you lose the deposit.
  • There is no specific time, only a general time-frame for delivery.
  • The deposit is not a credit toward other product or future production.
  • The deposit is refundable only if we fail to produce.
  • Deposit can be with your personal, MO or bank check (CARDS CAN NOT BE TAKEN FOR LONG TERM DEPOSITS). 
  • We are a small business and often get bumped at foundries and machine shops when the big boys get in the way.
  • Questions about this policy?  Please email or call us: cy4fn@outlook.com or 513-724-0700, Monday to Thursday, EST, 9-5









ALUMINUM
Lion Speed Head IV - 4  

356-T6 Aluminum - 4 Plugs . . .  $650.00
S.O.S.S. members take 5% off
Offered in 6.5: compression ratio.
110+ HP tricked out . . . If you know the Secrets Of Speed.

Weight 24 pounds  -  unpainted - fine grained - unpolished.











ALUMINUM
Lion Speed Head IV - 8  

356-T6 Aluminum -  Eight Plugs . . .  $675.00
S.O.S.S. Members take 5% off
​Same great head but machined for dual spark plugs. 
If utilized this requires a special dual ignition system that fires two spark plugs at the same time.
​Offered in 6.5: compression ratio only.
110+ HP tricked out . . . If you know the Secrets Of Speed.
Weight 24 pounds  -  unpainted - fine grained - unpolished.

 













CAST IRON
Lion Speed Head III  . . . . $650.00
S.O.S.S. Members take 5% off
Special nickle added cast iron, heat treated, painted black and CNC machined to perfection.
Offered only in 6.5:1 CR and with 4 spark plug holes.
(8 holes NOT available in iron).
​Same great head but in long lasting cast iron.
110+ HP tricked out . . . If you know the Secrets Of Speed.
Weight 52 pounds .
General Information









NEW!
  Each new Lion Speed Head features a threaded stud hole (at #8) to screw in a 1/2"-13 lifting eye.
Lift with a strap from the eye bolt  to the water pump hole.
​LION Speed Head chambers are CNC machined and special in several ways: Each are equal in cc'c,  each will accept up to 1.75" dia. valve heads and can be machined to accept 2" valves.

Circular  fly-cut above the pistion is 0.060" (+-) deep.
Our head gaskets "crush" to about 0.042"/ 0.044" @ 55 foot lbs.
Most engine rebuilds have 0.20" to 0.40" piston pop-up.
The Lion will accommodate almost any rebuild with safety space to spare.

FYI: "Squish" is that space between the piston top and the round chamber ceiling. More power is created when "squish" is at it's closest. We give the customer a little extra space for safety. Customized decking of the head to improve "squish" can be done at your end to maximize HP and torque. The rule of thumb is 0.020" squish at TDC is good/safe.
DYNO TESTING: The lion Speed Head has broken at least one Land Speed Record and more attempts are in the works. 
Click this button to see the extensive Dynometer testing on a wide variety of set ups.
Look around Dennis Piranio's  site it's loaded with good information (DYNO CHARTS below).
​LION III iron & IV aluminum cylinder heads feature almost exactly the same HP and torque curves.
Only the aluminum IV has 8 plug capability & a water tempurture port on top in back corner.
WIEGHT: Iron version is 52#. The aluminum is 24#.
HORSE POWER out of the box is about 78 with mostly stock appointments.
HP in highly modified engines, as high as 190 HP, has been documented.
70 HP to 110 HP is possible in street engines.
COMPRESSION RATIO: Lion Heads are machined to 6.5:1 CR and can be machined to approx 12:1 CR.
Our 6.5CR has near the same cylinder pressure as other heads machined to 7:1CR. Higher CR is NOT offered.
SPARK PLUGS: Primaries  are on the driver's side and require ignition wires to connect. We carry cap and wire kits.
Lion Heads run better with a "cool" plug like AC Delco R44XLS (14mm,3/4" reach, flat seat with ring gasket).
WATER PUMP mount is for either a Model A water pump or a Model A to early Ford V-8 conversion adapter.
HEAD GASKETS are extra and stocked. NEVER use a copper head gasket with an aluminum cylinder head. Use carbon and arimid fiber gaskets with a steel core and steel fire rings. Adding a zinc bar or two to your coolant plus antifreeze for aluminum engines will greatly reduce electrolysis.
SPECIAL PROJECTS:  We can produce a Lion Speed Head IV to just about any dimension you need. An example of a "Special" might be: Head casting machined except for the combustion chambers. This customer who wants a trick cylinder head made to his research and testing. This customer may shape the chambers, change the thickness, create new angles and spark plug positions to try to squeak out a few more HP. The Lion Speed Head is the only Model A and B Ford cylinder head capable of such manipulation because it was designed that way (there are limits) . . .We have cast in more wall thickness in and around the combustion chambers and deck to play with.
If you order a Special head, as roughly described, from a normal full production run, the cost will be our normal retail price. If outside a normal run there will be extra charges.

IMPORTANT NOTE about Compression Ratio (CR):

We provide all Lion heads at 6.5:1 CR.
We do not offer higher CR.
The owner can easily have their head milled to as high a CR as they want locally.
WHAT'S with the spark plug positions? As with all of the cylinder heads I make the spark plug position, on the driver's side, was part of something my gut told me would prove to be an effective place to be  . . . The conventional wisdom was that it would not . . . .The original Riley-Valve-In-Head (Two Port OHV) had the valves on the driver's side. It was this first version of George Riley's product line that won more races on salt and dirt tracks in the 1930's. When he switched plug positions (to make foundry casting easier)  the numbers dropped off when the spark plugs were moved to the passenger side. Other OHV conversions started winning (source; 4 cyl. racing engines used/wins from 1930-1935 race results) .

I also subscribe to the thought train that if one is to make Hop-Up speed parts . . .They should look like it and not dumbed down to look stock. Have fun and go for it . . you will have more fun than the other guys!

Professional Engine builder Dennis Piranio, Denton, Texas thought so too . . . He was capabale and interested enough to find out. With his performance dedicated Model A Dyno he prove it. Click the button to see the report that shows 2-3 more HP at our default position. Read Dennis' interesting comments on the Lion Speed Head.  Thanks, Dennis!

TO BUY A LION

​Tell us what you want and we will send you information and/or an invoice.
For invoices we need full name, billing/shipping address, phone and email address. Remember - checks only for deposit. Checks, Visa, MC, Disc. & PayPal accepted for balance. OVERSEAS orders must be paid with PayPal (easy to do).  We can easily arrange for a Bank Transfer if prefered.  Charlie Yapp   (513) 724-700 (OH)   cy4fn@outlook.com
Scalded Dog Speed Parts, 3860 Cain  Run Rd, Batavia OH 45103, USA . Phone (513) 724-0700, EST.  cy4fn@outlook.com