I put that in the comments

"2500-3000 on the street, redline on the track"

next box: Max RPM:
"6500"

I guess I don't get the point of asking me where I want redline and where I'll shift at are. Are those numbers ever any different? Does anyone not shift at redline whilst racing?

 

I always thought those questions were drag strip related. Like maybe you want to shift at 6300, but due to your gearing you go through the traps at 6800. I hope someone who actually knows responds here.

 

I put down my intended use as "road course/ autocross"

so hopefully that helps. I'll shift at redline, or a couple hundred before. I also don't mind lugging it, because sometimes not shifting is better for the balance of the car

 

It’s about what max rpm you want the cam to pull to. Where it shifts on the street is based on the tune, you can spec a cam to pull to 6k,7k etc. depends on the motor internals and how you use the truck. If you design a cam for a truck the tows only and doesn’t shift above 6000 and compare it to one that’s designed to shift at 7000 the later is gonna give up power down low. It’s pointless to have a cam that makes peak power out of your intended rev range. This is why he wants to know Max rpm.

What will your lifters, valve spring and pushrods handle? Lots of variables.

 

In this case the cam if so a car, specifically a C5

PAC 1219 springs will get me .600 lift, but with heavy valves and aggressive ramps I'll have valve float for sure, so gotta be careful

Johnston 2110r lifters

pushrods will be purchased after heads on
motor and I am able to measure length. I'll do aftermarket chromo ones for sure

edit: I do have some .660 dual springs with Ti retainers that I can put on the 408 if the cam dictates it

 

Example, I wanted my motor to handle Rpm. So I have Johnson link bar lifters (short travel) and 7/16 Manton pushrods along with Ferrea lighter valves. I target my cams to peak around 7000

 

That is definitely a bit more extreme than I plan to take this. I don't recall why I ended up with the R's, but it was suggested to me and I found them on sale and here we are.

I dont know how I feel about taking the stroker to 7k, but with appropriate valve control I don't mind trying

where are you guys ordering custom length pushrods from? I'll probably need a few different lengths when I set this thing up finally

 

Manton makes custom lengths not cheap but the best way to dial in a set up

 

no difference in price whether you have 16 same length or all different. And their price isn’t a whole lot higher, when it gets expensive is if you are running tapered or something odd.

 

I know I have them in one of my builds.
What I was referencing cost wise was the generic chromoly standard lengths that everyone sells around $100 range. I think My mantons where around $250