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$1,006.95
$792.99
Edelbrock 61989 LS1 Pro-Port Cylinder Head, Chevy 4.8,5.3,5.7,6.0L
Edelbrock 61989 LS1 Pro-Port Cylinder Head, Chevy 4.8,5.3,5.7,6.0L

Edelbrock 61989 LS1 Pro-Port Cylinder Head, Chevy 4.8,5.3,5.7,6.0L

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Edelbrock 61989 LS1 Pro-Port Cylinder Head, Chevy 4.8,5.3,5.7,6.0L
Edelbrock 61989 LS1 Pro-Port Cylinder Head, Chevy 4.8,5.3,5.7,6.0L
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We estimate this item will ship on or before October 24th.
Part # 32561989
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 4 business days for Edelbrock to ship this item.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

Cylinder Head Style:
Bare
Material Type:
Aluminum
Combustion Chamber:
38cc
Spark Plug Style:
Angle
Finish:
Natural
Sold in Quantity:
Each
CNC-Machined Combustion Chamber:
No
Intake Port Location:
Standard
Intake Port Shape:
Cathedral
Exhaust Port Location:
Standard
Intake Valves Included:
No
Exhaust Valves Included:
No
Valve Spring Included:
No
Damper Spring Included:
No
Retainers Included:
No
Locks Included:
No
Rocker Arm Studs Included:
No
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
No
Valve Guide Material:
Manganese bronze
Valve Seats Machined:
No
Valve Seat Material:
Ductile Iron
Steam Holes Drilled:
No
Oiling Style:
Through Pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Intake Valve Angle:
15
Combustion Chamber Style:
Double quench
CNC-Machined Exhaust Runner:
No
CNC-Machined Intake Runner:
No
Valve Stem Seals Included:
No
Accessory Bolt Holes Drilled:
Yes
Valve Guides Included:
Yes
GTIN Code:
085347619894

Info

These heads provide head porters with the extra material needed in the ports and combustion chamber for greater flexibility when developing CNC port programs, allowing engine builders to take full advantage of GM's LS series potential.
  • For Professional Cylinder Head Porter
  • 38cc Chamber Size
  • As-Cast Casting Has Small Ports And Chambers
  • Max Valve Size is 2.08 Int and 1.64 Exh
  • LS 1 Style 15-Degree Valve Angle
  • Enough Wall Thickness For CNC Machining
  • Seats and Manganese-Bronze Guides Included

Installation Instructions (PDF)

Some parts are not legal for use in California or other states with similar laws/regulations

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