Recent content by 74 Cuda

The 240 ports are too big for a 383 peaking anywhere in the 5000 rpm range. It'll have to run up around 6800 to make good power.

The cam also affects the port velocity. Lets say you're sucking on a straw. Not sure how to word this without sounding dirty. Your mouth would be the piston and the straw the port. Changes in how hard you suck on the straw can be compared to rpm changes. Now your finger tip will be the valve...

"Potential" and "lower than it can be" are relative terms. If the ports is too small it peaks earlier. If the port is to big it peaks later so you would have to rev it higher. The issue here is where do you want peak rpm. If you want it to peak at 6k then you would pick a head, cam, manifold etc...

Yes if the port isnt too big

If the port is too small (to much air speed) then the engine will just peak at a lower rpm

Using the bore size, the piston speed in fps at every degree through the 180 degree intake stroke, the average area of the intake port (determined by port length and cc volume) and of course the peak rpm of the engine to calculate the average air velocity through the port. The maximum air speed...

The supply and demand have to match

What he's saying is regardless of how much food is on the table a person can only eat so much.

I don't know the intake port lengths or volumes on the B1 heads but in my opinion for a 493 running to 6200 you're going to have a hard time beating the TF270

Engine blocks have a register or dowl to locate the main cap. Everytime you remove and reinstall the cap it sits in the same location. Connecting rods without dowls use the bolt shank to locate the cap. If bolts are replaced the rods needs resized.

Yeah nothing wrong with that

The velocity through the curtain area has a major effect on power potential and is also one of the factors used to determine the cam requirements

No arguments here just wanted to crunch some numbers. All good

Can you share some head information? I'd like to see the flow numbers at .400", .500", .600" along with the intake valve diameter, throat dia or % and the port length and CC's if possible

Which heads are you using?