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06-29-2011, 07:41 AM
#9
Before any good recommendation can be made it would be helpful to know what car you have (year,model), what trans, what current mods (all of them) and if an auto, what rear gear ratio you have.
AFR, TFS and MAST are the best of the best when it comes to heads, but by far not the cheapest. But you do get what you pay for. Plus they do not need a large cam (MS4) to make good power.
For an inexpensive head that works, TEA has fantastic programs that come within 10-15 HP of the AFR's.
When you start talking about the $1000-1100 heads it is usually not worth the total cost (heads, gaskets, bolts, extra labor) for the gains you get. These heads will generally need a cam with approx 8-10 more degrees duration to match the power of the heads meantioned previously.
So tell us what you got and we can go from there.
Mike Norris
AFR, TFS and MAST are the best of the best when it comes to heads, but by far not the cheapest. But you do get what you pay for. Plus they do not need a large cam (MS4) to make good power.
For an inexpensive head that works, TEA has fantastic programs that come within 10-15 HP of the AFR's.
When you start talking about the $1000-1100 heads it is usually not worth the total cost (heads, gaskets, bolts, extra labor) for the gains you get. These heads will generally need a cam with approx 8-10 more degrees duration to match the power of the heads meantioned previously.
So tell us what you got and we can go from there.
Mike Norris
06-29-2011, 11:02 AM
#10
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Before any good recommendation can be made it would be helpful to know what car you have (year,model), what trans, what current mods (all of them) and if an auto, what rear gear ratio you have.
AFR, TFS and MAST are the best of the best when it comes to heads, but by far not the cheapest. But you do get what you pay for. Plus they do not need a large cam (MS4) to make good power.
For an inexpensive head that works, TEA has fantastic programs that come within 10-15 HP of the AFR's.
When you start talking about the $1000-1100 heads it is usually not worth the total cost (heads, gaskets, bolts, extra labor) for the gains you get. These heads will generally need a cam with approx 8-10 more degrees duration to match the power of the heads meantioned previously.
So tell us what you got and we can go from there.
Mike Norris
AFR, TFS and MAST are the best of the best when it comes to heads, but by far not the cheapest. But you do get what you pay for. Plus they do not need a large cam (MS4) to make good power.
For an inexpensive head that works, TEA has fantastic programs that come within 10-15 HP of the AFR's.
When you start talking about the $1000-1100 heads it is usually not worth the total cost (heads, gaskets, bolts, extra labor) for the gains you get. These heads will generally need a cam with approx 8-10 more degrees duration to match the power of the heads meantioned previously.
So tell us what you got and we can go from there.
Mike Norris
06-30-2011, 11:53 AM
#13
I will put up the TEA 5.3's against any of those mentioned when it comes to hand ported or CNC ported stock castings.
And do not just look at the flow numbers that folks advertise. We have found two similar heads that flow 300 CFM at .550" lift with an open port can be quite different once an intake manifold is bolted on.
A good head (TEA 5.3) will drop approx 15-20 CFM with an LS6 intake on it and I have seen the lesser cost heads drop 30-40 CFM with and LS6 intake on them.
So be sure to make a fully educated decision. And that still requires the full current mod list and future decisions for the proper ending. Budget should play a big part in it for sure.
Mike Norris
And do not just look at the flow numbers that folks advertise. We have found two similar heads that flow 300 CFM at .550" lift with an open port can be quite different once an intake manifold is bolted on.
A good head (TEA 5.3) will drop approx 15-20 CFM with an LS6 intake on it and I have seen the lesser cost heads drop 30-40 CFM with and LS6 intake on them.
So be sure to make a fully educated decision. And that still requires the full current mod list and future decisions for the proper ending. Budget should play a big part in it for sure.
Mike Norris
