Which Vortec heads for a SBC?
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
Which Vortec heads for a SBC?
Looking at a budget build here....
What casting numbers would I need to look for on a set of used Iron Vortecs?
How much would the iron heads weigh and what weight savings would be gained by using Aluminum?
Thanks.
What casting numbers would I need to look for on a set of used Iron Vortecs?
How much would the iron heads weigh and what weight savings would be gained by using Aluminum?
Thanks.
Intermediate
Joined: Jan 2011
Posts: 33
Likes: 0
Look at a set of Engine Quest Vortecs. I don't remember the casting number right now. They measure between 180 to 185 cc intake runners, cut for 1.25 or 1.44 springs, ready for screw-in-studs. They flowed 235 cfm out of the box. I just put 2.02/1.60 valves in mine, they came with 1.94/1.50. Working on ports further right now. The bare castings were $190 ea in 2007. They also come assembled.
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
So on an 062 casting, what would the standard valve sizes, combustion chamber and runner size be?
I think I have seen them with 1.94/1.5 valves, 64cc and 170cc runners.
I know the 64cc chambers will help with upping the compression but what about valve sizes and runners? How will they affect the build?
Im looking to up the power from stock but not looking to make any huge numbers. I generally cruise about with some long distance driving. The odd spirited run but nothing serious.
This is the cam kit I have to install along with the heads and dual exhaust.
http://www.summitracing.com/parts/CCA-K12-268-4/
I think I have seen them with 1.94/1.5 valves, 64cc and 170cc runners.
I know the 64cc chambers will help with upping the compression but what about valve sizes and runners? How will they affect the build?
Im looking to up the power from stock but not looking to make any huge numbers. I generally cruise about with some long distance driving. The odd spirited run but nothing serious.
This is the cam kit I have to install along with the heads and dual exhaust.
http://www.summitracing.com/parts/CCA-K12-268-4/
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 2,056
Likes: 8
From: Redruth Cornwall
I see some after market vortecs are available with 2.02/1.6 valves and larger runners. How would they affect the build? Are larger valves and runners required for a mild build?
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Le Mans Master
Joined: May 2002
Posts: 5,086
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From: Lebanon Township New Jersey
For what you're doing the standard Vortecs will be plenty. I've run 12.53 at 106 mph with them on my engine, so they won't be a liabilty for your build since you're only building a cruiser.
