(reground) cam went flat?

[flyin ryan]

Originally Posted by ALZR1

DLC'D (Diamond like coating)

DLC stand's for 'Diamond like Carbon'. Trade name is Casidium.

[ALZR1]

Originally Posted by flyin ryan

DLC stand's for 'Diamond like Carbon'. Trade name is Casidium.

Thanks for clearing that up.


AL.

[FU]

Originally Posted by ALZR1

239/440 intakes for now
224/430 exhaust

maybe in about A year i'll move to some big cams like yours Frank.



AL.

My cams suck Al !
I .468 L 246 D
E .444 L 239 D

Don't need cams that big in a 4 valve per cyl. engine.

Originally Posted by flyin ryan

DLC stand's for 'Diamond like Carbon'. Trade name is Casidium.

Your good Ryan, I can't even pronounce Casidium.

[Zr1 Destroyer]

Hey...wow, my wrist pins are coated with that crazy casidium stuff.....wierd!

[Pete]

I'm still waiting for an answer



Frank why do you say your cams suck.
What's the problem.

My opinion your exhaust cams are too big.

I think you'll make more power with .228-.230 exhaust duration.

Pete
"Broken lifter Guy"

[Paul Workman]

Originally Posted by Pete

WTF.

Paul why did your wifes cam wipe out?

Pete,

Do you recall the worst oil tested in that article Marc wrote for "HOTB" about oil for our Zs a year ago? Well, guess what we were runnin' in Ami's flat tappet SBC? Yep!!

Ami had put over 3500 miles on that car since she bought it, and who knows how many miles were on that cam. So, when if wiped, "WTF!?" was my exact reaction too!

Making a long story short, I'm running Rotella in it now with a bottle of "the good stuff" from Crane to make sure the cam has what it needs to keep from wiping (again).

Question: Are you putting that additive you mentioned in your Z along with the AMO 10W-40 recommended by Marc, or have you been using some other oil?

TIA,

P.

PS. Flatout has our gaskets ready. I'll bring 'em w/ me to pizza nite on Friday.

P.

[flyin ryan]

Originally Posted by Zr1 Destroyer

Hey...wow, my wrist pins are coated with that crazy casidium stuff.....wierd!

They must be good pins then, Destroyer. All my Titanium pins i have made are coated. on those...they have steel wear 'end caps', the steel end caps aren't coated, just the main part of the pin itself. i can post pics if anybody is interested. not trying to sidetrack this thread

[cuisinartvette]

Stange how only one side got wiped out, have no explanation for that??? Dont kinow why that would happen.
Id be curious to what spring rates are anyway.

[FU]

Originally Posted by Pete

Frank why do you say your cams suck.
What's the problem ?

There is no need for cams that big , especially in a 4 valve per cyl engine.
My opinion FWIW.

Marc did a super job on that engine. Those are MY cams.... That I wanted him to install , and they
I would have been much happier with smaller cams.

Originally Posted by Pete

My opinion your exhaust cams are too big.

I think you'll make more power with .228-.230 exhaust duration.

100 % correct Pete more power and better drivability
I'd bet the car on the above statement.
--------------------------------------------------------------------------

Back on thread........if done PROPERLY a regrind cam is fine.

[XfireZ51]

Originally Posted by FU2

There is no need for cams that big , especially in a 4 valve per cyl engine.
My opinion FWIW.

Marc did a super job on that engine. Those are MY cams.... That I wanted him to install , and they
I would have been much happier with smaller cams.



100 % correct Pete more power and better drivability
I'd bet the car on the above statement.
--------------------------------------------------------------------------

Back on thread........if done PROPERLY a regrind cam is fine.

Just proves out the old adage even with DOHC motors.
Better small cam with big heads than vice versa. I have an excellent article on cam selection discussing the really critical parameters for deciding on cam specs. There was also a software application that calculated those parameters for you based on primarily low lift air flow. I used it to spec a cam for my 350 SBC using TFS23d heads. I'll try posting the article when I get to my laptop.