ProMaxx 2169 Series One 185 SBC 64cc Hydraulic Flat Tap Straight Plug Heads

Name: ProMaxx 2169 Series One 185 SBC 64cc Hydraulic Flat Tap Straight Plug Heads
SKU: 2169
Price: 1135.00 USD
Availability: InStock

Fits Vehicle SBC

The 185cc series 1 heads are perfect for that budget build. Making great power at a price that cannot be matched. Machined and assembled in the USA. Dyno results show 20 to 35 hp gains over the competition.

Features:

Series One SBC 185 Straight Plug 2.02/1.60/64cc Assembled with .575″ Hyd Flat Tappet Springs (Pair)
Ultra-smooth 356-T6 aluminum casting
Multi-angle valve job
Precision CNC machining
Straight plug options
64 cc chamber
Professional assembly
Assemblies include: 21-4N 1pc swirl polished back cut valves
Machined and Assembled in the USA
Sold In Pairs

Flow Chart

Flow Data @ 28″
	100	200	300	400	500	600
Int	71	137	195	226	239	246
Ext	54	111	155	179	192	199

Cylinder Head Options

PART #	BRIEF DESCRIPTION	PLUG TYPE	CHAMBER SIZE	VALVE SIZE	MAX LIFT
2168	185 SBC Series 1 Assy	Angle	64	2.02/1.6	.575 Hyd Flat Tappet
2168HR	185 SBC Series 1 Assy Hyd Roller	Angle	64	2.02/1.6	.600 Hyd Roller
2168SR	185 SBC Series 1 Assy Solid Roller	Angle	64	2.02/1.6	.700 Solid Roller
2168SRT	185 SBC Series 1 Assy Solid Roller Ti Retainers	Angle	64	2.02/1.6	.700 Solid Roller Ti Retainers
2169	185 SBC Series 1 Assy	Straight	64	2.02/1.6	.575 Hyd Flat Tappet
2169HR	185 SBC Series 1 Assy Hyd Roller	Straight	64	2.02/1.6	.600 Hyd Roller
2169SR	185 SBC Series 1 Assy Solid Roller	Straight	64	2.02/1.6	.700 Solid Roller
2169SRT	185 SBC Series 1 Assy Solid Roller Ti Retainers	Straight	64	2.02/1.6	.700 Solid Roller Ti Retainers
2170	185 SBC Series 1 Assy	Angle	72	2.02/1.6	.575 Hyd Flat Tappet
2170HR	185 SBC Series 1 Assy Hyd Roller	Angle	72	2.02/1.6	.600 Hyd Roller
2170SR	185 SBC Series 1 Assy Solid Roller	Angle	72	2.02/1.6	.700 Solid Roller
2170SRT	185 SBC Series 1 Assy Solid Roller Ti Retainers	Angle	72	2.02/1.6	.700 Solid Roller Ti Retainers
2171	185 SBC Series 1 Assy	Straight	72	2.02/1.6	.575 Hyd Flat Tappet
2171HR	185 SBC Series 1 Assy Hyd Roller	Straight	72	2.02/1.6	.600 Hyd Roller
2171SR	185 SBC Series 1 Assy Solid Roller	Straight	72	2.02/1.6	.700 Solid Roller
2171SRT	185 SBC Series 1 Assy Solid Roller Ti Retainers	Straight	72	2.02/1.6	.700 Solid Roller Ti Retainers
2172	185 SBC Series 1 Bare	Angle	64	2.02/1.6
2173	185 SBC Series 1 Bare	Straight	64	2.02/1.6
2174	185 SBC Series 1 Bare	Angle	72	2.02/1.6
2175	185 SBC Series 1 Bare	Straight	72	2.02/1.6

Technical Specs

Combustion Chamber ……64-72cc
Weight …………………………55.00 lbs.
Intake Runner ……………. 185cc
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 Specs******
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