Complete Small Port Vortec Bow-tie Cylinder Head 25534421 - Crate Engine Depot
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Top > Engine Components > Small Blocks & Components > Cylinder Heads > Complete Small Port Vortec Bow-tie Cylinder Head 25534421 |
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Complete Small Port Vortec Bow-tie Cylinder Head 25534421Note: Price is per cylinder head
SKU: 25534421
RETAIL: $596.40
YOUR PRICE: $536.76
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Complete Small Port Vortec Bow-tie Cylinder Head 25534421 Description
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GM Performance Parts latest most powerful iron cylinder head for Street or
Racing. This Vortec design Special Performance cast iron cylinder head
features revised intake and exhaust ports and includes 2.00" hollow stem intake
valve P/N 12555331 and 1.55" sodium filled exhaust valves P/N 12551313.
The deck surface is .450" with 65 cc combustion chambers, 175 cc intake and
65 cc exhaust ports. All Vortec intake ports are taller and narrower than early
model Chevrolet heads. The valve cover mounting holes are for both early
model flange or late model center. This head also includes intake manifold
mounting holes for both early model 6 bolt main or late model 4 bolt Vortec
design. The head has screw in rocker studs P/N 12552126, large valve spring
pocket machining, and will accept up to .530" lift camshafts with out
modifications. Heads are identified with the Bow-Tie logo on the exterior of the
head below exhaust flange and Vortec logo on top of intake port area. They
also feature GM logo cast into bottom of intake ports. Includes valve spring
P/N 12551483, valve seal P/N 10212810, and spring cap P/N 10212808.
Technical Note:
You must use a raised runner design intake manifold P/N
10051103 (6 bolt mounting), or Vortec design 12366573, 12496820,
12496821, 12496822, and 12499371 (4 bolt mounting) with this head. You
can use production Vortec intake gaskets P/N 12529094 (torque spec. 11ftlb/
15Nm) for mounting Vortec design heads or use P/N 12497760 (torque spec.
30 ft-lb) with conventional material when using on early model raised runner
or Vortec design intake manifolds, this gasket has both 6 bolt and 4 bolt Vortec
attaching holes. Head casting P/N 25534351C.
Check out all of the GM Performance Parts Cylinder heads here
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