How are these #'s for cnc 243's?
Flow numbers are a lot LESS the measure of a head than people think.
Might be great, might be ruined or anything in between.
If that price includes cores it may well be worth the gamble, or at least try to find a running engine result.
Might be great, might be ruined or anything in between.
If that price includes cores it may well be worth the gamble, or at least try to find a running engine result.
Please buy these and do a apples to apples dyno. We would all love for you to be the Guinea pig. LOL
If they make good power that is by far the best deal I have ever seen on a set of heads, much less 243's. I spend a lot of time budget part shopping. Please keep us updated.
If they make good power that is by far the best deal I have ever seen on a set of heads, much less 243's. I spend a lot of time budget part shopping. Please keep us updated.
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I agree that you shouldn't really be basing your opinions on how good they are from the flow numbers. Those can really vary and even in an apples to apples flow comparison they don't always produce similar power.
Given that those are a no-name porter and with stock springs, I would probably pass at that price. You can easily find name brand ported heads on here used for around that price, which at least you know will perform. If those were say $6-700 I would take the chance, but not for $1200+ when you consider the need for new springs.
Given that those are a no-name porter and with stock springs, I would probably pass at that price. You can easily find name brand ported heads on here used for around that price, which at least you know will perform. If those were say $6-700 I would take the chance, but not for $1200+ when you consider the need for new springs.
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I have a set of stock 243's and he said he would cnc mine for 400
I assume he wants to see how stable the head is. Port shape is primary, flow numbers are secondary.
Port shape influences laminar flow and if the shape is incorrect turbulence will occur and normally this happens at lifts around or above .600 with stock casting LS heads.
Port shape influences laminar flow and if the shape is incorrect turbulence will occur and normally this happens at lifts around or above .600 with stock casting LS heads.