- Ultra-smooth 356-T6 Aluminum Casting
- Competition 5 angle valve job
- Hand Bowl Blending
- Precision designed Runners
- Large Spring pockets
- 185cc intake runner
- Diamond honed guides
- Chamber unshrouded
- Machined and Assembled in the USA
- Assemblies feature 21-4N Stainless 1 pc Swirl polished back cut valves, studs and guide plat
Flow Data @ 28″ water |
|
|
|
|
|
lift |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
Int |
79 |
144 |
209 |
257 |
278 |
289 |
296 |
Ext |
70 |
118 |
160 |
192 |
210 |
219 |
225 |
PART # |
BRIEF DESCRIPTION |
PLUG TYPE |
CHAMBER SIZE |
VALVE SIZE |
MAX LIFT |
9191 |
SBF 185 Assy Hyd Flat Tappet |
|
58 |
2.02/1.6 |
.575 Hyd Flat Tappet |
9192 |
SBF 185 Assy Hyd Roller |
|
58 |
2.02/1.6 |
.600 Hyd Roller |
9193 |
SBF 185 Assy Solid Roller |
|
58 |
2.02/1.6 |
.700 Solid Roller |
9193T |
SBF 185 Assy Solid Roller Ti Retainers |
|
58 |
2.02/1.6 |
.700 Solid Roller Ti Retainers |
9190 |
SBF 185 Bare |
|
58 |
2.02/1.6 |
|
9194 |
SBF 185 Solid Roller Ti Retainers |
|
58 |
2.02/1.6 |
.800 Solid Roller Ti Retainers |
Combustion Chamber ……58cc
Weight …………………………55.00 lbs.
Intake Runner ……………. 185cc
Exhaust Runner …………..cc
Intake Valve Size …………2.02”
Exhaust Valve Size …….. 1.60”
Spring Pressure
Hydraulic Flat Tappet .575 max lift
Closed ………………….. 115 lbs. @ 1.800”
Open ……………………. 310 lbs. @ 1.225”
Hydraulic Roller .600 max lift
Closed …………………… 145 lbs. @ 1.800”
Open …………………….. 325 lbs. @ 1.200”
Solid Roller .700 max lift
Closed …………………… 230 lbs. @ 1.900”
Open …………………….. 600 lbs. @ 1.200”
Valve Guide ……………Manganese Bronze
Valve Seal Material … Viton
Retainer Material ……Steel or Titanium
Valve Job ……………… 20-angle
Head Bolts……………. ARP 154-3701(302)/154-3603(351W)
Valve Spacing ………. OEM
Valve Seats ……………Hardened Steel
Intake Gasket ………. Fel-Pro #1262
Exhaust Gasket ……. Fel-Pro #1487
Head Gasket ……….. Fel-Pro #1011-1
Spark Plug …………. .750” Reach Gasket Seat or NGK # 4091
Torque specs …….. 80 Ft lbs. 3 increments using 30wt oil
Valve Cover Bolt Pattern…….. Perimeter Bolt
Intake Port Dimension……
Promaxx designed SBF 185 for 5/16″ pushrods