Eric's cam challenge

[junkyardhero]

Can you explain this? I'm not sure what you mean.

it's the diameter of the roller lifter wheel.

different diameter will give different duration numbers.

there's also a whole bucket full of other things involved on wheel size, but that's the basics of what's being discussed here in regards to measuring out a cam.

 

[Killer6]

Can you explain this? I'm not sure what you mean.

RRR is referring to Mopar's '@.050" ' duration conversion, referenced in the catalogs, take a 284°/.484" cam & multiply the 284×.850...=241.4°@.050" tappet lift.
They also clearly state to NOT use the calculated @.050" to select Your camshaft.

 

[RustyRatRod]

it's the diameter of the roller lifter wheel.

different diameter will give different duration numbers.

there's also a whole bucket full of other things involved on wheel size, but that's the basics of what's being discussed here in regards to measuring out a cam.

No. That's not what I was speaking about. The industry standard for the given in the formula for calculating duration @ .050" is .750. Mopar performance used .850 for that given instead of .750. I used to know the formula off the top of my head, but I don't anymore. It's in the MP engine manual, which I am too lazy to go dig out.

 

[RustyRatRod]

RRR is referring to Mopar's '@.050" ' duration conversion, referenced in the catalogs, take a 284°/.484" cam & multiply the 284×.850...=241.4°@.050" tappet lift.
They also clearly state to NOT use the calculated @.050" to select Your camshaft.

Correct! Thank you.

 

[junkyardhero]

No. That's not what I was speaking about. The industry standard for the given in the formula for calculating duration @ .050" is .750. Mopar performance used .850 for that given instead of .750. I used to know the formula off the top of my head, but I don't anymore. It's in the MP engine manual, which I am too lazy to go dig out.

ah... i figured since we was on topic of this cam challenge and LS uses roller cam my lizard brain thought roller and then just ran off on that tangent.

per usual, kindly disregard my nonsense babbling!

 

[RustyRatRod]

ah... i figured since we was on topic of this cam challenge and LS uses roller cam my lizard brain thought roller and then just ran off on that tangent.

per usual, kindly disregard my nonsense babbling!

It's ok. I've gotten used to it. LOL

 

[RustyRatRod]

I kinda decided to stay out of this thread and all of the divergent sub subjects, as much fun as it has been. But I have to admit, this made me laugh out loud.

You took it in the intent I meant it. Obviously, some got butthurt over it. lol