SBC ALUMINUM HEAD OEM HYD ROLLER CHEVY TOP ENGINE KIT

Complete Top End Hydraulic Roller Engine Kit

 Aluminum SBC Heads

Check it out the only thing you need is your short block!!!!

This kit will fit Hydraulic roller type SBC BLOCKS

Here is the list of everything included you need to complete the top of your engine

• Pair of Assembled Aluminum 200cc Heads(Check Out Specs.)
• Polished Aluminum timing cover
• Aluminum 1.5 ratio 3/8 stud roller rocker arms
• Polished aluminum Tall valve covers(upgrade to Fabricated $75)
• ARP 134-2001 Intake manifold bolts
• Matching intake gasket
• New set of Head Bolts
• Professional Products Intake manifolds choice

  • Crosswind Air Gap Dual plane street and strip 1500-6500RPM
  • Hurricane Single plane street and strip 3000-7500RPM
• Roller timing chain set(step nose)
• ARP 134-1001 cam bolts set
• MLS head gaskets and cam change gaskets
• Complete set of hydraulic OEM style roller lifters
• Matching 5/16'" .065 wall pushrods
• Erson OEM Step Nose Hydraulic Roller Camshaft of choice(Check out cam choices) 

 We can add or subtract any parts in this kit to meet your needs!!!

ADD $90 for lifter retaining kit (dog bones and spyder)

Straight plug

200cc intake runner

64cc chambers with improved flow chambers

Stronger Pressure casted Aircraft grade 356A aluminum alloy heat treated to T6 specs.newer process with less porousity and better consistance of port sizing

• Harden valve seats
• Bronze valve guides

   
• Accepts center bolt and rail type valve covers
• Standard accessory bolt holes
• Plus .400 thick deck for severe uses
   
   
   
   
   
   
•  

2.02 intake valves

1.60 exhaust valves

• Valves are one piece forging EV-8 stainless steel alloy 
• Harden chrome plated stems
• Undercut stems powerflow design for improved flow
• Fully machined and swirl polished stems
• Harden tips NO lash caps required 

Hydraulic roller valve springs

1.440 Diameter (dual spring w/damper)

135lbs at 1.800" installed height

320lbs at 1.200" open pressure

Max. lift .600

We assemble all heads in our shop to your application using high quality parts

• High temperature Positive viton valve seals for superior oil control
• 5/16"  guideplates high quality heat treated steel
• 3/8" screw in rocker studs 190,000
• 7 degree chrome moly retainers to match springs
• 7 degree 11/32" valve locks
• Harden spring cups and shims

We flow tested these heads on our Superflow SF1020 flow bench with Preformance Trend analyzing software using valves and head as they come from manufactures. These flow numbers are not inflated to sell heads. We have seen up to a +/- 5% from these flow numbers from casting to casting.

These Heads flow over 500HP without porting work!!!

Intake flow data w/2.02" at  28" of water

LIFT                 CFM

.100"               63.7

.200                113.9

.300                161.3

.400                201.3

.500               232.0

.600               250.7

Exhaust flow data w/1.60" at 28" of water

.100              57.2

.200              101.0

.300              127.6

.400              152.1

.500              159.5

.600              169.4

Hydraulic Roller Camshaft Choices

      LIFT                @.050 DUR.           LOBE SEP.        POWER RANGE

• .480/.480           218/226                    108                    2200-5200
• .548/.548           226/234                    108                    2500-5500
• .548/.548           226/234                    112                    2500-5500
• .548/.548           238/246                    108                    3000-6000
• .548/.548           238/246                    112                    3000-6000
• .548/.548           242/250                    108                    3500-6500
• .548/.548           250/258                    108                    3500-6500
• Nitrous Cams
• .548/.548           226/238                    112                    3000-6000
• .548/.548           234/246                    112                    3500-6500
• .548/.548           343/250                    114                    3800-6800

CGM MOTORSPORTS
8211 Cloverleaf Dr. Millersville, Md 21108

Phone (410)766-SHOP(7467)

EMail CGMSHIPPING@AOL.COM