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HEAD BUILD KITS
Speedmaster offers most of our heads as bare castings, or professionally assembled. When we assemble heads, extra time is taken to set them up for YOUR application. All you have to do is choose the head casting you want and the type of cam you want the springs to work with.
HEAD BUILD KIT OPTIONS:
TYPE HEAD BUILD KIT CLOSED SEAT PRESSURE OPEN SEAT PRESSURE MAX. LIFT Hydraulic Flat Tappet Solid Flat Tappet Hydraulic Roller Solid Roller Race Solid Roller
HBK01 HBK02 HBK03 HBK04 HBK05
110 LBS 125 LBS 145 LBS 210 LBS 300 LBS
300 LBS 320 LBS 360 LBS 450 LBS 700 LBS
. 550”. 580”. 580”. 650”. 800”
* FORD 289 / 302 / 5.0L based engines with 7 / 16” HEAD BOLTS / STUDS, we ofter the required hardened shoulder spacers to keep the bolt or nut from deforming the aluminum head. the part number is SM3030.
INTAKE / EXHAUST GASKETS Although our Small Block Ford cylinder heads fit on both 289 / 302 / 5.0L and 351W blocks, they use the same manifold to head gaskets, but require specific valley gaskets that are purchased separately from some aftermarket suppliers. Speedmaster pn # SM3288 comes with both lengths of valley gaskets as well as the manifold to head gaskets. Fel-pro has specific part numbers for each layout. Fel-Pro pn # 1262 is the manifold to head gasket that fits both engines. If you require a thicker gasket, or have our SM3045 CNC ported heads, use Felpro pn # 1262R.
For the exhaust gaskets, use our pn # SM5201 which is a re-useable copper gasket set, or Felpro pn # 1487 which is a paper gasket set.
HEAD GASKETS Due to the popularity of the Small Block Ford engines, there are many different bore size gaskets available. The following is a small list of gaskets we recommend for use with our SBF cylinder heads:
Speedmaster PN # SM5214( 4.055” Bore size. 041” thick, MLS) Speedmaster PN # SM5215( 4.185” Bore size. 041” thick, MLS)
Fel-Pro PN # 9333-PT1( standard low performance use) Fel-Pro PN # 1011-2( 4.100” Bore size,. 039” thick, Comp.) Fel-Pro PN # 1006( 4.145” Bore size,. 039” thick, Comp.) Fel-Pro PN # 1046( 4.200” Bore size,. 051” thick, Comp.) Fel-Pro PN # 1133( 4.100” Bore size,. 041” thick, MLS.) Fel-Pro PN # 1134( 4.185” Bore size,. 041” thick, MLS.) Fel-Pro PN # 1135( 4.200” Bore size,. 041” thick, MLS.)
HEAD BOLTS / STUDS Our heads don’ t require anything special as far as head bolts are concerned. We do however recommend that you replace your fasteners when installing a new set of heads.
289 / 302 / 5.0L engines use 7 / 16” hardware like the following for use w / SM3030 adapters: Speedmaster pn # SM2454( head stud kit) ARP pn # 154-3605( head bolt kit) ARP pn # 154-4205( head stud kit)
351W engines use 1 / 2” hardware like the following: Speedmaster pn # SM2455( head stud kit) ARP pn # 154-3603( head bolt kit) ARP pn # 154-4203( head stud kit)
SPARKPLUGS Our Small Block Ford cylinder heads require the use of a14mm thread, 5 / 8” hex,. 750” reach spark plugs. Below you will find a list of some plugs that fit and work with our heads:
NGK- BCPR6ES, R5671A-7, R5671A-8 Autolite- 3923, 3924, AR3933, AR3934 Champion- RC12YC, RC10YC74, RC9YC3
Remember that you need a COLDER plug when you make more power, ie. N2O, turbo and supercharging.
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