Got my 243 heads! now what?
09-25-2008, 01:19 PM
#42
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Why spend the time swapping heads if your not going to add a cam???
243's are going to net 15-20RWHP Max
Any decent cam will add 35-50RWHP and is only $350 and half an hour of extra work on top of the head swap.
Just take the balancer off remove the front cover and oil pump and your doneyank the old **** out and add throw the new cam in.
I can't understand why anyone would do a 3-5 hour head job and not take another hour to swap the cam
...
243's are going to net 15-20RWHP Max
Any decent cam will add 35-50RWHP and is only $350 and half an hour of extra work on top of the head swap.
Just take the balancer off remove the front cover and oil pump and your doneyank the old **** out and add throw the new cam in.
I can't understand why anyone would do a 3-5 hour head job and not take another hour to swap the cam
...
09-25-2008, 01:29 PM
#43
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Why spend the time swapping heads if your not going to add a cam???
243's are going to net 15-20RWHP Max
Any decent cam will add 35-50RWHP and is only $350 and half an hour of extra work on top of the head swap.
Just take the balancer off remove the front cover and oil pump and your doneyank the old **** out and add throw the new cam in.
I can't understand why anyone would do a 3-5 hour head job and not take another hour to swap the cam...
243's are going to net 15-20RWHP Max
Any decent cam will add 35-50RWHP and is only $350 and half an hour of extra work on top of the head swap.
Just take the balancer off remove the front cover and oil pump and your doneyank the old **** out and add throw the new cam in.
I can't understand why anyone would do a 3-5 hour head job and not take another hour to swap the cam
...
09-25-2008, 02:08 PM
#44
Why spend the time swapping heads if your not going to add a cam???
243's are going to net 15-20RWHP Max
Any decent cam will add 35-50RWHP and is only $350 and half an hour of extra work on top of the head swap.
Just take the balancer off remove the front cover and oil pump and your doneyank the old **** out and add throw the new cam in.
I can't understand why anyone would do a 3-5 hour head job and not take another hour to swap the cam...
243's are going to net 15-20RWHP Max
Any decent cam will add 35-50RWHP and is only $350 and half an hour of extra work on top of the head swap.
Just take the balancer off remove the front cover and oil pump and your doneyank the old **** out and add throw the new cam in.
I can't understand why anyone would do a 3-5 hour head job and not take another hour to swap the cam
...
09-25-2008, 03:07 PM
#47
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what good would enlarging the ports do if the the valve is still the same size? think about it. thats like widening the 15 freeway to 5 lanes but still have a 2 lane section.
09-25-2008, 03:12 PM
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this sounds like something you should save for and do the cam at the same time, putting ported heads on a stock motor would be senseless like mentioned before, save up for the cam and get the heads done and do it all at once.
09-25-2008, 03:25 PM
#54
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You should have waited for a deal like this
https://ls1tech.com/forums/lsx-parts-sale/991732-stage-3-patriot-6-0l-heads-f-s.html
https://ls1tech.com/forums/lsx-parts-sale/991732-stage-3-patriot-6-0l-heads-f-s.html
09-25-2008, 03:57 PM
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So to answer the question, as long as you enlarge the ports properly you will be fine with keeping stock sized valves. So if your going to get bigger valves with large runners/ports, I would really make sure the person doing it has put out a quality job before with proven performance.
09-25-2008, 04:06 PM
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You do understand that some of the big time race cars use valve sizes no larger than 2.050" right? Its all about physics, larger runners and larger valves is just going to get a lot of air but make less velocity than a chamber thats shaped right into a stock sized valves. Bigger is not always better. Its all about loads of money and someone who has done years of testing and has lots of experience with what produces the best results.
So to answer the question, as long as you enlarge the ports properly you will be fine with keeping stock sized valves. So if your going to get bigger valves with large runners/ports, I would really make sure the person doing it has put out a quality job before with proven performance.
So to answer the question, as long as you enlarge the ports properly you will be fine with keeping stock sized valves. So if your going to get bigger valves with large runners/ports, I would really make sure the person doing it has put out a quality job before with proven performance.
09-25-2008, 04:08 PM
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Yes I understand, but thats what I mean, if a big block motor running sub 8s can do it with that small of a valve no reason a LS1 shouldn't be able to with the proper runner shape and such.
Last edited by Almostryan3; 09-25-2008 at 04:18 PM.
09-25-2008, 04:29 PM
#60
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Velocity
Turbulence
Tumble
Quench
Flow
They all come into play, all must be of a certain type and ratio to work in harmony. Too much of one or another is not necessarily good, and might even harm the whole process. (I know there is more, just a short example)
There are heads that use stock valves and flow in the low 290's that will outperform large valve 320cfm heads that were just hogged out to within an inch of their lives without any thought given to the overall design of the chamber and runners.
Turbulence
Tumble
Quench
Flow
They all come into play, all must be of a certain type and ratio to work in harmony. Too much of one or another is not necessarily good, and might even harm the whole process. (I know there is more, just a short example)
There are heads that use stock valves and flow in the low 290's that will outperform large valve 320cfm heads that were just hogged out to within an inch of their lives without any thought given to the overall design of the chamber and runners.