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Product Details

SB Chevy Alum Heads<br>64cc/190cc As Cast<br>Assembled

123400090

POWERHOUSE

SB Chevy Alum Heads
64cc/190cc As Cast
Assembled

$699.00 Set

70 LB

Product Description

POWERHOUSE 23° Aluminum cylinder heads (2) for SB Chevrolet. 190cc runner, 64cc chamber. Comes assembled with 11/32" stainless steel, swirl polished valves, new screw-in 3/8" studs, chrome moly guide plates, .550" lift (1.460" OD)dual valve springs, chrome moly valve spring retainers, 10° hardened valve locks, high-temp valve seals. Price is for two (2) heads.

Every Head Features:

• Rocker stud torque 50 ft. lbs.
• Spring pocket 1.575"
• Rocker - no offset required
• Intake valves 2.05" .100" Long
• Exhaust valves 1.600" .100" Long
• Valve angle 23°
• Intake guide material Manganeze Bronze
• Exhaust guide material Phosphor Bronze
• Hydraulic (Flat Tappet) Setup: 115lb Seat
• Solid (Flat Tappet) Setup: 125lb Seat

Flow Numbers (Intake/Exhaust) in CFM:

.100 58/50.4
.200 113/97
.300 159/132
.400 199/161
.500 227/180
.600 244/189
.700 248/192

NOTES:

• 400ci Engines: You Must Drill Steam Holes
• You Must Use +.100 Long Push Rods
• Recommended Spark Plug: Champion C57C
• Be Sure to Clay Check When Using Dome Pistons
• Traditional & Vortec Intake Manifold Bolt Pattern
• Perimeter & Center-Bolt Valve Cover Bolt Pattern
• Tall Valve Covers Recommended

Cam Setup

Spark Plug Angle

Spring Options
Roller Springs to .650" Lift 140 Seat (+$95.00)
Roller Springs to .750" Lift - 220lb Seat (+$175.00)

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