340 dyno chart thoughts
so.. based on my setup if i were to change the cam which hydraulic one would you recommend. and what size of carburetor to go with it? i assume if i wanted more power from my engine later on these 2 things would be the best place to start. everything else should be fine?
I wouldn't recommend hydraulic. They are really just OK. And there's really no price advantage to either.
If you are fine with popping the valve covers off once or twice a year. Go with a solid. It's seriously not that hard to check lash. Take the car, pickup a couple buddies from their places, stop at the beer store and grab beer. Come back home and check them. It's a 2 beer job at most. The driving around get's it nice and warm. If you **** hundreds, go with a solid roller. You've got the heads for it.
What cam you get depends ENTIRELY on what you want. Off idle throttle and lots of torque? 230's duration, .550 area lift. Hot street cam with low gears and a 4 speed/high stall convertor? 240's duration, .550-600 lift. High RPM, screamer 340? 250's duration, .600+ lift. Honestly your heads can support all 3. And I'm oversimplifying the choice. A lot.
The best thing to do? Call the cam guys. Your cam choice will be determined by (in no order):
Rear gears
Convertor/4 speed
Car weight
Engine static/dynamic compression
Head flow
Intake
Driver style
Street vs track time
And a whole wack of things.
Take a look at this -
Page Title
That will give you an idea of what goes into picking a cam.
As for carb? That will also depend on cam. The more RPM's you're pulling, the more carb you need. But a solid START on a stock stroke 340 is the 750 double pumper. 8 out of 10 times that carb is a drop on with minor adjustment. BUT the more you pull out of the engine, the more you need. There are guys running 950 carbs on their setups. I think someone on here is running a 1050 dominator on his 340 and loves it.
