ATK 2CH4HP1 SBC Vortec Cast Iron Cylinder Heads Assembled

Description

Introducing ATK’s Vortec cast iron cylinder head. Vortec heads are known for cracking in different locations and can be costly to fix. Now with ATK’s new casting, save the time and trouble sourcing cores and or waiting the long lead times at machine shops. ATK has used thousands of these heads in our combinations, they are a proven upgraded casting. The valve springs provided are an upgrade allowing for the use of a Hyd. Roller or Hyd. Flat Tappet camshaft up to .525″ lift on either.

Material: Cast Iron
Combustion Chamber: 64cc
Intake Runner: 170cc
Exhaust Runner: 62cc
Intake Valve: 1.94″
Exhaust Valve: 1.50″
Valve Material: Stainless steel
Valve Guide: Cast Iron
Valve Seal Material: Viton
Retainer Material: Steel
Valve Spring Max Lift: Hyd. Roller or Flat Tappet .525” Max
Rocker Studs: Screwed In
Exhaust Port Location: Standard
Intake Port Location: Standard
Spark Plug Style: Straight
Accessory Bolt Holes Drilled: Yes
Assembled: Yes
Finish: Raw Material (Not Painted)

Recommended Components:
Spark Plug: Tapered Seat Plug- Autolite 605 or AC Delco R44LTS
Head Gasket: Fel Pro 7733PT2, 1003, 1044, or per application
Intake Gasket: Fel Pro 1255
Exhaust Gasket: Fel Pro 1404

Application Information:
Vehicle Manufacturer: Chevrolet
Years: 1996-2006
Engine: V8 350CI / 5.7L
Casting / OEM: 12558062-10239906
OEM Interchange: 10239906, 12528913, 12558062, 12529509, 938-803860T
Mercruiser/Quick Silver Cross Reference: 938-883297, 938-803860T

Note: It is up to the customer to confirm the cylinder head and components are suitable for their application.