243's on 5.3
#1
243's on 5.3
Truckshop, a member here asked if i could mill his 243 heads down to install on his 5.3l 3k yank, 220/220 cammed truck. We shall see how he likes the power as soon as he throws them on!
Milled .040
Heres a few pics:
See ya tommorow Shelton,
Derek
Milled .040
Heres a few pics:
See ya tommorow Shelton,
Derek
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What vehicle are the 243 heads off of? What all can they be found on? What is the valve size diff. than the 5.3? http://texas-speed.com/shop/item.asp?itemid=84&catid=40
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the ones i got are off of a tbss. they are ls6 heads with 2.00 intake valves.they have a bigger chamber so you have to mill them so you dont loose compression. at .040 it should be around 10.0 to 10.5. i didn't measure them so i don't know exaclty what the chambers came out to.