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Ok here is the Vortec setup going for NEW (i have had BAD luck with used items from Craiglist). Its a Kit from Jegs. I can reuse my 1406 Edelbrock carb, and I can use an matched CAM to the Edelbrock manifold this ket comes with.
America's favorite high performance cast iron small-block cylinder heads offer big power and bigger value. The GM (Chevy) Vortec cylinder heads fast burn combustion chamber and high velocity ports combine to produce big horsepower out of the box. Vortec heads can be mildly ported for additional performance and can be milled up to .040'' for increased compression ratio. The Vortec head uses 1.94'' intake valves and 1.50'' exhaust valves to compliment the high velocity port design. The Vortec head out-flows the bow-tie head out of the box and is a 20 to 40 horsepower bolt-on increase over earlier cast iron small-block heads. Vortec Heads require a Vortec style intake manifold due to its improved manifold mounting flange and gasket design and raised intake ports. It is not recommended that the heads be modified to accept early design intake manifolds. Vortec heads fit all small-block engines produced 1955 to present, excluding LT1/LT4 reverse coolant flow engines and current LS1 style engines. Heads come completely assembled with valves, springs, retainers, and 3/8'' rocker studs. Requires the use of self-aligning rocker arms.
# Material: Cast Iron
# Intake Port Volume: 170cc
# Combustion Chamber Volume: 64cc
# Vale Diameter: 1.94'' Int./ 1.50'' Exh.
# Spark Plugs: Straight
# Special Note: Valve Springs - .475 Max Lift
With the 64cc chamber can I still run 87 octane?
Also, I notice this is not "50 state legal"meaning no heat cross over for EGR. So any idea if the fact this is a more efficient head design makes EGR obsolete?
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