if you leave valve lash ajusted loosely but not so they chatter. but you sould buy spings if your gonna run it hard. it would be cheaper than new heads
A 1mm drop in one metre, or a slope of 2 degrees. The aqueducts of the Roman Empire all had a 2 degree drop . This would make the water flow without surging. There also would no need for animals to lift water or turn an Archimedian Screws.
Unfortunately, there is not good answer. The flow into a horizontal well will depend on the formation and oil properties. This can be stated as transmissibility = Ko x h/ visc where Ko is the oil permeability, h is the formation thickness and visc is the oil viscosity. It can be more complicated than this, but the higher this transmissibility, the higher the initial flow rate. Of course, the extent of the horizontal well is also important, and artificial lift may be used to increase flow.
The work done is transformed into potential energy (in the object lifted) so W = m x g x dz where W = Work m = mass g = acceleration due to gravity dz = change in height => W = 1kg x 1m x 9.81m/s/s => W = 9.81J 1J = 0.239 calories => It takes 2.345 calories to lift 1kg by 1m NOTE These are "real" calories. The calories usually talked about in relation to dieting etc are kilo-calories so to equate this value to the calories in a chocolate bar, divide by 1000
The function of springs in a combustion engine is to lift the weight of the valve and to keep valves closed.
You can use any diameter springs for that. Best to contact the cam manufacturer for a recommendation.
Stock valve springs on vortec heads are compatible with valve lift of up to 0.450".
The rocker arm ratio (whether they be stock or roller rockers) has to do with the offset of the rocker fulcrum. The stock rocker ratio on the small block Chevy is 1.5:1. This is important because it effects your valve lift. For example, a camshaft with .300 lobe lift will yield a .450 valve lift with the stock 1.5 ratio rockers. Multiply the lobe lift times the rocker ratio to get your valve lift. Now, that same camshaft will yield .480 lift with a 1.6 ratio rocker arm and .510 lift with a 1.7 ratio rocker arm. More lift is good as long as your valve springs can handle the extra lift and you don't run into valve/piston interference problems. You are more likely to run into coil bind with the valve springs than an interference problem though. When in doubt, make sure to check just to make sure there will be no problems.
vale springs dependon what lift your cam is . need to know what lift cam it is where can get the correct pounds spring if not can have one BIG HEAD ACHE.
I believe the stock valvetrain can handle up to a .480 lift before valve springs and pushrods are needed. You can always call Summitracing Tech service. It is free.
As with anything mechanical the springs or hydraulics eventually lose their ability to properly lift the valve back up quickly, which causes valve float and loss of power at the top end of the engine.
you can buy spacers for the sprimngs that mount uder your stock springs you can just search for caprice classic lift kit
The purpse of valve lifters is exactly what it says, to lift the valve.
After 500 lift you will need to do some head modifying. But what ever cam you use,you also need the valve springs that match that cam instaled on your heads. After 483 lift you will need to go to a long slot rocker arm to keep from cutting the studs in half.
Lower a arm lift
There are two types... To lift a car, in the form of a car lift, lift off the ground. The other is to lift a car with a suspension lift, installing taller springs, etc.