Stock Valve Job
** Competition Valve Job
Replace valve guides
(includes parts)
Machine seats for larger valves
Resurface (iron)
Resurface (aluminum)
Chamber volume & mill
for specific compression ratio
Surface exhaust manifolds
Port / Port match intake manifold |
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* Stage III does not include cost of valves
** Competition valve job is any deviation
from stock ie: larger springs, longer valves. |
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Stage I: |
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Basic flow improvement - short side radius contoured and ports polished. The stage I flow improvement will increase your head's efficiency by approximately 20 cfm @ 28" which calculates to an approximate 40 H.P. gain on a V-8
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Stage II: |
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Basic port job - short side radius contoured and outer ports widened at choke point. The Stage II port job will increase your head's efficiency by approximately 30 cfm @ 28" which calculates to an approximate 60 H.P. gain on a V-8
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Stage III: |
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Competition port job - full competition port and polish complete with larger valves installed *. The stage III port job will increase your head's efficiency by at least 40 cfm @ 28" which calculates to a gain of at least 80 H.P. on a V-8 |
Performance cylinder head rebuilding for import & domestic heads. High performance head porting, polishing, rebuilding
