Christofero
Tuned and Synch'ed
- Joined
- Nov 14, 2008
- Messages
- 46
The main problem with the valve train is that the hemi geometry limits the amount of lift and overlap and compression you can have.
You can recess valves and put cutouts into the piston but Valve to valve clearance is the limitation. All you can do is whack the valve open and closed as quickly as possible which suggests going to a roller lifter. I would be talking to the cam gurus at Crane etc and see what they suggest.
If you are going to do this seriously then you should buy an engine dyno and fit appropriately large cooling blowers.
The good thing is that tuning for WOT is fairly simple. At 130mph ram tuning starts to become effective. Also a crankcase vacuum scheme might help (See Jegs - they have kits). It is cheap to do and you can validate it fairly easily on the dyno.
The other thing is to find a real porting expert - Like Mike Rich or my favorite Steve Boszo. it will be expensive. In fact it is the most expensive thing. If they don't have a flow bench and/or brag about the polish of their work they are charlatans.
The problem is that there is only so much you can do with a 30mm carb.
As Smokey Yunick used to say, the road to speed is paved with broken parts....
You can recess valves and put cutouts into the piston but Valve to valve clearance is the limitation. All you can do is whack the valve open and closed as quickly as possible which suggests going to a roller lifter. I would be talking to the cam gurus at Crane etc and see what they suggest.
If you are going to do this seriously then you should buy an engine dyno and fit appropriately large cooling blowers.
The good thing is that tuning for WOT is fairly simple. At 130mph ram tuning starts to become effective. Also a crankcase vacuum scheme might help (See Jegs - they have kits). It is cheap to do and you can validate it fairly easily on the dyno.
The other thing is to find a real porting expert - Like Mike Rich or my favorite Steve Boszo. it will be expensive. In fact it is the most expensive thing. If they don't have a flow bench and/or brag about the polish of their work they are charlatans.
The problem is that there is only so much you can do with a 30mm carb.
As Smokey Yunick used to say, the road to speed is paved with broken parts....