SB Road Racing/Nascar/Sprint Car/Reving BUDGET BUILD

Love the post.


Ditto, love the process.


Gotcha! On the same page!


Myself as well. Know it all I am for surely not!


I don’t know of a RPM limiting class until you get to… NHRA Pro Stock I think it is where Chevy cried a river because they can’t out RPM a HEMI to try to out power the HEMI for more HP.

The con of high rpm high output is accelerated wear.
The con of lower rpm output is a cost lost in HP.

Think of RPM as a hammer hitting a nail. The more times you can strike the mail, the faster you drive it into the wood. This is why guys will chase a high rpm engine. The more times you can get the piston to fire per second is going to provide more power per second causing the car to cover more ground quicker like the hammer hitting the mail faster.

People will build a stroker because the longer stroke is like hitting the mail harder with a hammer. But it will hit the mail less times per second since it takes time to rotate the assembly because the stroke is longer.

Of course it’s possible to build a stroker that will turn 8K, but obviously out of the scope of the build idea and feel.
So then would this mean that having the power lower with a redline of 6500 but power a little lower would make for an engine that would have better durability long term in comparisons to say a engine that has redline at 7-8k?

My engine science knowledge is limited to going fast, but I am re learning how to build the engine from the scientific perspective this way I can determine moving forward the science of cam, intake, engine choice instead of chasing the numbers like most do when new to the game.