Originally Posted by
Hatch Man(GsR)
Ok, for 400-500 whp you should definately sleeve it. Not because the block is not capable of holding the power, mostly because at 400-500 whp you can shatter a stock sleeve instantly with only a small hiccup in your tune.
Use the wiseco pistons, SRP has a relatively high silicone content and at high horsepower, your EGT will be higher. Also, 9.0 is a good compression ratio...
Use the gsr block, the increased displacement will make it easier to make the power.
As for cam selection, go with Skunk2 stage 3 all motor cams and adjust the cam gears to reduce your overlap a bit. I have seen huge power out of these..
Be sure and have the bottom end blueprinted and balanced. Use ACL Race bearings and make sure you check the crankshaft for wear.
Cometic head gasket and Golden Eagle head studs, they are stronger than ARP because they have a larger diameter, also they are bead blasted and will torque more evenly.
I would agree with almost all of the above but I would use an OEM Honda head gasket. If you happen to do an over bore then get the gasket from Golden Eagle.
What is the plan with the turbo? Are you using a dual scroll turbo? If you are I would look at the skunk 2 pro 1's if it is going to be a track car. If it is a street car you might want to go with the tuner series for better idle. With the engine out of the car have it degreed to make sure that the cams are dialed in right.