Secrets Of Speed Society
Valve Train
Updated 3-24-2017
Our stainless steel valves are the best you can buy. Modern stems, 45 degree face, solid one pc cast iron guides.
They can be used for either intake or exhaust.









BIG & LITTLE
Modern EIGHT (8) Valve Set  -  4 BIG & 4 LITTLE                                                                          
IN STOCK     $170.00 complete kit

Fit Model A & B engines* (1928 -1934)
4 Intake valves 1.73". *The 4 intake valve seats require machine work to make fit.
Consult your engine shop about suitability for your application.
4 Exhaust valves 1.53". Stock fit with a valve seat grind as usual.
48 pcs: 8 valves total,  8 springs, 8 keepers, 16 lockers, 8 guides (cast iron).  Valve grind required as usual.
NOTE: This is the valve combination that approaches the the best breathing under most conditions. It really wakes up the Banger engine.
Add optional Spring Spacers for even better performance (below).










Choose 4 valve set of either BIG or LITTLE
Modern  FOUR  (4) Valve Set  -  4  BIG 1.73" Valves
Modern  FOUR (4) Valve Set  -  4   LITTLE 1.53" Valves
                                                   
IN STOCK                 $85.00 per 24 pc SET of Valves
Fit Model A & B engines* (1928 -1934)
4 valves 1.73".  4 new intake valve seat will be required, Machined in seats to make fit.
Consult your engine shop about suitability for your application.
24 pcs: 4 valves total,  4 springs, 4 keepers, 8 lockers, 4 guides (cast iron). 
​Add optional Spring Spacers for even better performance (below).











​Valve Ring Seats - Hardened - Sold Each

1.53 Ring Seat     In stock          $7.00 EACH
1.730 Ring Seat   In Stock          $7.00 EACH
1.730 Over-sized Ring Seat      In Stock      $8.50 EACH  (no image)
Ring Seats require machine work to install.
Over-sized Seats help with problems associated with thin decks and spider cracks.
Consult your engine shop.









Valve Spring Spacers (8 pcs)                                                                                              
 $25.00   set                              IN STOCK

Fit Model A and B engines 1928-1934
3/16" thick, CNC machined steel, set of 8 pcs.
Installed HOT and slide up over valve guide, firmly contacting chamber ceiling wall surface  
The spacer will improve valve spring pressure and help avoid valve float at higher RPMs.   
Always
double check for spring bind before starting engine.  
To be used with engine utilizing stock Model A or B valve springs.
ALWAYS rotate the engine and observe for spring bind. Not common but possible on extreme cam grinds.

DETAILS:  Stock valve springs check out at 35 lbs at 2.5" installed height.
With spacers installed, spring pressure should be close to 52 lbs at 2.5" installed height  (thanks to Phred Hollister).
Engines may "run out of steam" at 2800 - 3200 rpm with stock springs and a high lift camshafts (valve float due to weak springs). 
With spacers It should now pull through 3500 rpm in 2nd gear.
You'll smile and start looking for a longer stretch of road.










Valve Plugs (sold each)                                                                                              
$16.95                         IN STOCK

Fit Model A & B Ford with "F" head OHV conversions.
Special CNC'd aluminum Plugs fit into the (unused) intake valve seat on OHV "F" head conversions.
They are non-mechanical.
Used to support the head gasket and channel OHV oil return to the crankcase.
The large OD is sized for a press fit into a hole machined in for a hardened ring seat. The large OD can be turned down to fit a stock valve seat.
Best to install first and then deck the block. Plug should be flush with or a hair below the deck surface.
The small OD is pre-sized to press into the empty valve guide hole.  
This part is included with all our OHV kits.
Questions? Please email us.
Order by sending an email with what you want along with your full name and billing/shipping address.
​We will send back an invoice to pay from. . . Or call our office (513) 724-0700 EST, USA   
Scalded Dog Speed Parts, 3960 Cain Run Road, Batavia, OH 45103.  Phone 513-724-0700,  Email:  cy4fn@outlook.com