aod92

I'm new to the ls game and have a question. I searched this but couldn't find an answer. Someone I know has a set of 241 heads for sale that I'm thinking about buying for my lq4 6.0. I'm planning on keeping the truck n/a and it will be a weekend cruiser and take it to the track every once in a while. Are these heads any good unported or do they have to be ported to make decent power? I was looking to make around 4-450. This is going in my 67 c10 with a victor jr intake carbureted. Not sure what cam I'm using yet either. Thanks in advance!

1981TA

iTrader: (7)

Mine made 380ish at the crank on a stock vette ls1 with carb and lth. I have a second set of 241s complete with valves, springs and rockers for 200 if anyone is interested. I had my first set ported by AI and they're on a 450 rwhp ) NA LS2 now.

ZONES89RS

iTrader: (25)

A cam and 241 heads with a carb will make 450 at the flywheel. 317s that come on the 6.0 will make more because they flow 25-30 more CFM but have a larger chamber so torque production is down not enough to tell.

ZONES89RS

iTrader: (25)

My 2009 and 2008 4.8 had 243s. They started using 243 and 799s in 2007 up. Figure the price of them would be dropping more by now but 400$ is the going rate for a pair still.