ProMaxx Performance Products Cylinder Heads MAXX 171 SB MOPAR 65cc
93605 (Sold in Pairs)
The Maxx 171 SB Mopar heads have finally given SB Mopar enthusiasts a choice. It not only out performs the competition; it is at a price that Mopar owners cannot believe.
Maxx SBM 171 65cc Assembled with .600 Hyd Flat Tap Springs (Pair)
Features:
• 171cc Intake runners• Ultra-smooth 356-T6 Aluminum casting
• Precision CNC machining
• 5 angle valve job
• Hand Bowl blended
• Unshrouded chamber
• Diamond honed Bronze guides
• Multiple chamber options
• Large spring pockets
• Multiple spring options
• Professional assembly
• Assemblies include 21-4N 1 pc stainless swirl polished back cut valves
• Machined and Assembled in the USA
| Flow Data @ 28″ water | ||||||
| lift | 100 | 200 | 300 | 400 | 500 | 600 |
| Int | 71 | 133 | 191 | 236 | 251 | 254 |
| Ext | 66 | 111 | 145 | 173 | 185 | 193 |
Technical Specification:
Combustion Chamber ……63-65cc
Weight …………………………55.00 lbs.
Intake Runner ……………. 171cc
Exhaust Runner …………..77cc
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″
******* other options available******
Valve Guide ……………Manganese Bronze
Valve Seal Material … Viton
Retainer Material ……Steel
Valve Job ……………… 5-angle
Head Bolts……………. ARP 144-3601
Valve Spacing ………. OEM
Valve Seats ……………Hardened Steel
Intake Gasket ………. Fel-Pro 1213
Exhaust Gasket ……. Fel-Pro 1432
Head Gasket ……….. Fel-Pro 8553PT
Spark Plug …………. .750” Reach Gasket Seat
Torque specs …….. 80 Ft lbs. 3 increments using 30wt oil