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Small Block Chevy
Cast Iron Cylinder HeadSmall Block Chevy 350 Bare Head Angle Plug 64cc Combustion Chamber 185cc Intake Runner 2.020 in. Intake Valve 1.600 in. Exhaust Valve 23 deg. Valve Angle Sold Individually
Speedmaster 746-PCE281.1756 Features:
All Speedmaster 23deg. Small Block Chevy heads are available with Straight or Angled sparkplugs. Standard valve sizes are 2.020 in. Intake, and 1.600 in. Exhaust, both +.100 in. length. While the 2.02" valves are standard issue, all of our 23deg. aluminum heads can accept a 2.050 in. intake valve with minimal additional work. HEAD GASKETSThe head gasket we recommend for our 23deg. heads used on 327/350/383/400 SBC engines without steam holes is Felpro #1003. On engines using the GM 400 block, or aftermarket blocks with steam holes, use Speedmaster PCE348.1006 or Felpro #1014.INTAKE GASKETSOur heads are manufactured with both the conventional intake manifold bolt pattern, and the Vortec bolt pattern. If you're installing a Vortec manifold, use Felpro #1255 gaskets. If you are using a convential intake manifold, use Speedmaster PCE349.1002 or Felpro #1266 gaskets.PUSH RODSOur aluminum 23deg. heads typically use +.100" (longer than stock) pushrods, Depending on the components used, it is possible that you may need pushrods shorter or longer than that so we recommend that you use an adjustable pushrod to dial in your rocker geometry and order pushrods to match.SPARK PLUGSAll Speedmaster 23deg. SBC heads use standard 14mm.- Great throttle response and top-end horsepower
- Highly efficient ports and state-of-the-art combustion chambers shapes for improved performance throughout the rpm range
Build Your Heads the Way You Want
Speedmaster Bare Cylinder Heads are like a clean slate, letting you use the valves, springs, and components that suit your hot rod.
Part TypeCylinder Head
Product LineSpeedmaster Bare Cylinder Heads
BrandSPEEDMASTER
Package Height5.51
Package Width8.66
Package Length20.47
Weight54.01 PG
Part CategoryPerformance Parts
Vendor Part NumberPCE281.1756
Package Qty1
Package TypeEA
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