power gain with 243 heads over 706
04-16-2013, 12:06 AM
#1
power gain with 243 heads over 706 Just curious what the power gain would be from going to 706 to 243 heads would be on a turbo 5.3? I'm currently running a ls6 cam and 76mm turbo. I'm curious what the power gain would be on the same amount of boost.
04-16-2013, 01:08 AM
#2
The gain would be from the slightly larger intake valves of the 243s.... but unless you milled them you would lose a little compression as the chambers are 64cc vs. 61cc.
http://houstonperformancetrucks.com/...h-flow-numbers
Once you take into account new head gaskets and head bolts/studs it may not be worth doing unless you are going for big power numbers and need LS9 head gaskets/studs to begin with.
http://houstonperformancetrucks.com/...h-flow-numbers
Once you take into account new head gaskets and head bolts/studs it may not be worth doing unless you are going for big power numbers and need LS9 head gaskets/studs to begin with.
