Features:
- Pro designed CNC ports/ chambers
- 225cc Fully CNC ported in the USA Runners and Chambers
- Ultra-smooth 356-T6 Aluminum Casting
- 5 angle valve job
- Angle or straight plug
- Diamond honed guides
- Large spring pockets
- Multiple spring options
- Assemblies include: 21-4N stainless 1pc swirl polished back cut valves studs and guide plates
- Machined and Assembled in the USA
| Flow Data @ 28″ water |
|
|
|
|
|
| lift |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
| Int |
150 |
214 |
270 |
296 |
316 |
319 |
326 |
| Ext |
114 |
147 |
176 |
205 |
225 |
238 |
238 |
| PART # |
BRIEF DESCRIPTION |
PLUG TYPE |
CHAMBER SIZE |
VALVE SIZE |
MAX LIFT |
| 9225 |
225 SBC CNC Assy |
Straight |
64 |
2.08/1.6 |
.600 Hyd Roller |
| 9226 |
225 SBC CNC Bare |
Straight |
64 |
2.08/1.6 |
|
| 9227 |
225 SBC CNC Assy |
Straight |
64 |
2.08/1.6 |
.700 Solid Roller |
| 9228 |
225 SBC CNC Assy |
Straight |
64 |
2.08/1.6 |
.700 Solid Roller Ti Retainers |
| 92252 |
225 SBC CNC Assy |
Straight |
72 |
2.08/1.6 |
.600 Hyd Roller |
| 92262 |
225 SBC CNC Bare |
Straight |
72 |
2.08/1.6 |
|
| 92272 |
225 SBC CNC Assy |
Straight |
72 |
2.08/1.6 |
.700 Solid Roller |
| 92282 |
225 SBC CNC Assy |
Straight |
72 |
2.08/1.6 |
.700 Solid Roller Ti Retainers |
| 9225A |
225 SBC CNC Assy |
Angle |
64 |
2.08/1.6 |
.600 Hyd Roller |
| 9226A |
225 SBC CNC Bare |
Angle |
64 |
2.08/1.6 |
|
| 9227A |
225 SBC CNC Assy |
Angle |
64 |
2.08/1.6 |
.700 Solid Roller |
| 9228A |
225 SBC CNC Assy |
Angle |
64 |
2.08/1.6 |
.700 Solid Roller Ti Retainers |
| 92252A |
225 SBC CNC Assy |
Angle |
72 |
2.08/1.6 |
.600 Hyd Roller |
| 92262A |
225 SBC CNC Bare |
Angle |
72 |
2.08/1.6 |
|
| 92272A |
225 SBC CNC Assy |
Angle |
72 |
2.08/1.6 |
.700 Solid Roller |
| 92282A |
225 SBC CNC Assy |
Angle |
72 |
2.08/1.6 |
.700 Solid Roller Ti Retainers |
Combustion Chamber ……64-72cc
Weight …………………………55.00 lbs.
Intake Runner ……………. 225cc
Exhaust Runner …………..72cc
Intake Valve Size …………2.02”-2.08″
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”
******* other options available******
Valve Guide ……………Manganese Bronze
Valve Seal Material … Viton
Retainer Material ……Steel
Valve Job ……………… 5-angle
Head Bolts……………. ARP 134-3601
Valve Spacing ………. OEM
Valve Seats ……………Hardened Steel
Intake Gasket ………. Fel-Pro 1206
Exhaust Gasket ……. Fel-Pro 1404
Head Gasket ……….. Fel-Pro 1004 or 1094
Spark Plug …………. .750” Reach Gasket Seat
Torque specs …….. 80 Ft lbs. 3 increments using 30wt oil
