600rwhp with lsa blower?
Staging Lane
Joined: Mar 2017
Posts: 66
Likes: 10
From: Augusta, GA
Yes, but... I think you will need a cam to get to 600rwhp (ls9 is cheap and plentiful) I wouldn't go with L9 Heads the the valves can wear the guides. On-line you can buy stock ZL1/CTSV castings for $376each and then spend the extra money on quality valves and springs. $228 for new hollow LS3 valves. $230 for Manley extreme duty exhaust valves and $229 for BTR .660 lift springs and then you can grow down the road. A good set of heads for boost $1440. GM CNC's LS3 heads are cheaper if aren't going to get crazy down the road with boost.
Staging Lane
Joined: Dec 2012
Posts: 91
Likes: 0
Yes, but... I think you will need a cam to get to 600rwhp (ls9 is cheap and plentiful) I wouldn't go with L9 Heads the the valves can wear the guides. On-line you can buy stock ZL1/CTSV castings for $376each and then spend the extra money on quality valves and springs. $228 for new hollow LS3 valves. $230 for Manley extreme duty exhaust valves and $229 for BTR .660 lift springs and then you can grow down the road. A good set of heads for boost $1440. GM CNC's LS3 heads are cheaper if aren't going to get crazy down the road with boost.
Given the choice, I would stay away from the LS3 for boost due to the thinner deck, but I also run 22-25psi with a 4 bolt head.
Since you already have the LS9's I'd say run them, or if you're worried about it, throw some bronze guides in there and run them.
