Product Description
Get Your Pontiac Out of the Garage and Back on the Road with These Modern Performance Cylinder Heads from Speedmaster!
Other Shops Sell Ported 240CFM Iron Heads for $1950. Save Some Weight, Money And Gain 49CFM. Our Heads Flow 289CFM As Cast!
Priced to get you Cruising instead of Dreaming at $1950 a Pair with Free Shipping! Order 1 for each pair. Not sold individually.
Save Your Factory Cast Iron Heads Because They're Never Going To Make Them Again. These Weigh a Lot Less & Flow a Lot More!
Must Use RAIV Style Round Exhaust Port Exhaust Manifolds or Headers. Set Up for Hyd Flat Tappet or Hyd Roller Cam.
Valve Lift Intake Exhaust
.100 76 72
.200 147 124
.300 213 156
.400 258 177
.500 269 195
.600 289 202
CFM on Superflo SF600 @ 28"
May be shipped from the Warehouse in California. Shipping times may be faster for the West Coast and slower for the East Coast.
| Cylinder Head Style: | Assembled |
| Cylinder Head Material: | Aluminum |
| Cylinder Head Finish: | Natural |
| Combustion Chamber Volume (cc): | 72 cc |
| CNC-Machined Combustion Chamber: | Yes |
| Intake Runner Volume (cc): | 215 cc |
| Exhaust Runner Volume (cc): | 175 cc |
| CNC-Machined Intake Runner: | No |
| CNC-Machined Exhaust Runner: | No |
| Intake Port Shape: | Ram Air IV |
| Intake Port Location: | Standard |
| Exhaust Port Shape: | Round Ram Air IV |
| Exhaust Port Location: | Standard |
| Spark Plug Style: | Angled |
| Comp. Valve Job: | Yes |
| Intake Valves Included: | Yes |
| Intake Valve Diameter (in): | 2.110 in. |
| Exhaust Valves Included: | Yes |
| Exhaust Valve Diameter (in): | 1.660 in. |
| Valve Springs Included: | Yes |
| Maximum Valve Lift (in): | 0.580 Flat tappet, .740 Roller |
| Outside Diameter of Outer Spring (in): | 1.450 in. |
| Damper Spring Included: | Yes |
| Number of Springs Per Valve: | Dual |
| Retainers Included: | Yes |
| Retainer Material: | Chromoly steel |
| Locks Included: | Yes |
| Lock Style: | 10 degree |
| Valve Stem Seals Included: | Yes |
| Valve Stem Seal Style: | Positive stop |
| Rocker Arm Studs Included: | No |
| Rocker Arms Included: | No |
| Rocker Arm Nuts Included: | No |
| Guideplates Included: | No |
| Valve Cover Mounting Style: | Perimeter Bolt |
| Accessory Bolt Holes Drilled: | Yes |
| Intake Valve Angle: | 14 deg. |
| Exhaust Valve Angle: | 14 deg. |
| Valve Guides Included: | Yes |
| Valve Guide Material: | Bronze |
| Valve Seats Machined: | Yes |
| Valve Seat Machine Style: | 3-angle |
| Valve Seat Material: | Ductile iron |
| Steam Holes Drilled: | No |
| Oiling Style: | Through pushrod |
| Machined for O-Ring: | No |
| Heat Crossover: | No |
| Quantity: | Sold as a pair. |
|
Assembly Specifications: Hyd Roller Tappet Max Lift: .740" Intake Install: 135lbs @ 1.8 |
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