Bare Large Port Vortec Bow-tie Cylinder Head 25534445 - Crate Engine Depot
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Top > Engine Components > Small Blocks & Components > Cylinder Heads > Bare Large Port Vortec Bow-tie Cylinder Head 25534445 |
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Bare Large Port Vortec Bow-tie Cylinder Head 25534445Price: is per cylinder head
SKU: 25534445
RETAIL: $421.43
YOUR PRICE: $358.21
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Bare Large Port Vortec Bow-tie Cylinder Head 25534445 Description
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25534371 GM Performance Parts latest most powerful iron cylinder head with "large
ports" for Street or Racing.
This Vortec design Special Performance cast iron
cylinder head features revised intake and exhaust ports and machined for 2.00"
intake valve and 1.55" exhaust valves. The deck surface is .450" with 65 cc
combustion chambers, 206 cc intake and 77 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 is machined
for 3/8" screw in rocker studs, 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.
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 25534371C.
Check out all of the GM Performance Parts Cylinder heads here
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