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Pontiac \"Performer RPM\" Alloy Heads - (87cc) - Pair (Round Port)
Reviews

Designed for 65-79 389 up thru to 455 CI Pontiac Engines.

  • This head is after designed after the 69-70 Ram Air IV Pontiac Cylinder Head.. one of the MOST favoured and sort after head in Pontiac living memory..
  • It produces outstanding horsepower with excellent low speed torque and throttle response. These 87cc heads are assembled with stainless steel one piece swirl polished 2.11 in. intake valves and 1.66 in. exhaust valves, with undercut stems to promote excellent flow for more power.
  • Other features include 2-ring positive oil control seals, rocker studs and bronze guide plates, valve springs, steel retainers & keepers.
  • This is for Round Port not D Port.
  • They also include , rocker studs and guide plates, valve springs, steel retainers, and keepers. It also includes hardened valve seats, and 5/8in. thick deck surface for durability and head gasket retention.
  • All factory accessory bosses are included for bolt on convenience.
  •   Delivery of these parts requires very secure and very good protective handling.

  •    Although not carried in stock.. special order time of generally 14-21 days should land them on your main city locations.

  • Delivery will be additional.

  •       Delivery of these parts requires very secure and very good protective handling. The average US supplier does bugger all to protect these in transist..simple experience fact... they normally just slap a label on a cardboard sales pack and send.. We have our own packers in California.. especially to look out for this type of minimal  pre-handling practices and eliminate damage. We do the packing again properly but the secured Insured delivery nation wide IS NOT covered on this part.... and will vary from $44 to $88 depending on location from Wollongong NSW.

 

Cylinder Head DETAILS:Assembled Cylinder Head Material:
Aluminum Cylinder Head Finish:
Natural Combustion Chamber Volume (cc): 87 
 
CNC-Machined Combustion Chamber: No
Intake Runner Volume (cc): 215cc
Exhaust Runner Volume (cc): 175cc
CNC-Machined Intake Runner: No

 

 

 

 

CNC-Machined Exhaust Runner: No

Intake Port Location: Standard

Exhaust Port Shape: Ram Air IV

Exhaust Port Location: Standard

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): 0.575 in.

Outside Diameter of Outer Spring (in): 1.460 in.

Damper Spring Included: Yes

Number of Springs Per Valve: Single

Retainers Included: Yes

Retainer Material: Steel

Locks Included: Yes

Lock Style: 7 degree

Valve Stem Seals Included: Yes

Valve Stem Seal Style: Positive stop

Rocker Arm Studs Included: Yes

Rocker Arm Nut Thread Size: 7/16-20 in.

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: Yes

Guideplate Pushrod Size: 5/16 in.

Valve Cover Mounting Style: Perimeter bolt

Accessory Bolt Holes Drilled: Yes

Intake Valve Angle: 14

Valve Guides Included: Yes

Valve Guide Material: Manganese 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:Yes