- 340cc full CNC Intake runner
- Full CNC exhaust and combustion chamber
- Ultra-smooth 356-T6 aluminum casting
- Flows over 415 CFM
- .750 deck thickness
- 24° Intake/ 15° Ex valve angle
- Diamond honed guides
- CNC’d in the USA
- Multiple spring options
- 5 angle valve job
- Professional Assembly
- Machined and Assembled in the USA
- Assemblies include: 21-4N 1pc swirl polished back cut valves, 7/16 studs and guide plates
Flow Data @ 28″ water |
|
|
|
|
|
|
|
lift |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
1.00 |
Int |
177 |
271 |
323 |
365 |
387 |
400 |
412 |
415 |
417 |
Ext |
148 |
195 |
243 |
270 |
289 |
307 |
310 |
312 |
315 |
PART # |
BRIEF DESCRIPTION |
PLUG TYPE |
CHAMBER SIZE |
VALVE SIZE |
MAX LIFT |
9340 |
340 BBC Bare |
|
121 |
2.300/1.88 |
|
9341 |
340 BBC Assy |
|
121 |
2.300/1.88 |
.600 Hyd |
9342 |
340 BBC Assy |
|
121 |
2.300/1.88 |
.700 Solid Roller |
9342T |
340 BBC Assy |
|
121 |
2.300/1.88 |
.700 Solid Roller Ti Retainers |
9343 |
340 BBC Assy |
|
121 |
2.300/1.88 |
.900 Solid Roller Ti Retainers |
Combustion Chamber ……121cc
Weight …………………………78.00 lbs.
Intake Runner ……………. 340cc
Exhaust Runner …………..135cc
Intake Valve Size ……….. 2.300
Exhaust Valve Size …….. 1.88”
Spring Pressure
Hydraulic Roller .600 max lift
Closed ………………….. 135 lbs. @ 2.000”
Open ……………………. 365 lbs. @ 1.400”
Solid Roller .700 max lift
Closed …………………… 230lbs. @2.000”
Open …………………….. 600 lbs. @ 1.300”
Solid Roller .900 max lift
Closed …………………… 332 lbs. @ 2.100”
Open …………………….. 950 lbs. @ 1.200”
******* other options available******
Valve Guide ……………Manganese Bronze
Valve Seal Material … Viton
Retainer Material ……Steel
Valve Job ……………… 5-angle
Head Bolts……………. ARP 135-3703 Mark IV/ 135-3707 Mark V
Head Studs ………….. ARP 235-4713
Valve Angle ………. 24/4 intake 15/4 exhaust
Valve Seats ……………Hardened Steel
Intake Gasket ………. Fel-Pro 1275(may require slight trim)
Exhaust Gasket ……. Fel-Pro 1412
Head Gasket ……….. Fel-Pro 1047 Mark V and Mark VI / 1017 Mark IV
Spark Plug …………. .750” Reach Gasket Seat
Torque specs …….. 80 Ft lbs. 3 increments using 30wt oil
Exhaust port ………. Raised .375