ProMaxx Performance Products Cylinder Heads Maxx SBC 190 Straight Plug 2.02/1.60/64cc Assembled with .600 Hyd Roller Springs (Pair)
2181HR (Sold in Pairs)
The 190 SBC is our 183cc runner head that has been CNC ported to match a 1206 Felpro gasket to pick up flow numbers for that little extra. Will make over 500 hp in a pump gas 383.
Maxx SBC 190 Straight Plug 2.02/1.60/64cc Assembled with .600 Hyd Roller Springs (Pair) (Pair)
Features:
- CNC and hand blended Intake Runners
- Ultra-smooth 356-T6 Aluminum casting
- 5 angle valve job
- Angle or straight plug
- Diamond honed Bronze guides
- Chamber unshrouded
- Multiple spring options
- Professional Assembly
- Assembled heads include: 21.4N 1 pc swirl polished back cut valves, 3/8 studs and guide plates
- Machined and Assembled in USA
| Flow Data @ 28″ water | ||||||
| lift | 100 | 200 | 300 | 400 | 500 | 600 |
| Int | 66 | 132 | 195 | 232 | 252 | 261 |
| Ext | 55 | 111 | 155 | 179 | 193 | 199 |
Technical Specification:
Combustion Chamber ……64-72cc
Weight …………………………55.00 lbs.
Intake Runner ……………. 190cc
Exhaust Runner …………..72cc
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”
******* 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