cam question

graham1524

graham1524

Well-known member
what would i need to run a 412 cam on a basically stock rebuild not looking for excessive power but would like a little gain and reliability

would the 412 be the correct cam to go with

also would the 412 for sale through RPM work with a non-roller setup
 
TYTILIDIE

TYTILIDIE

METH HEAD
Re: cam question

If you wnat a little more power Ild leave the cam alone unless youre going to have the motor out. Otherwise, I'ld just turn up the boost.
 
graham1524

graham1524

Well-known member
Re: cam question

I am taking the motor out for rebuilding .03 over and rebuilt turbo are only real mods except balancing and head work

would the 412 be good or go for a stock cam if stock what is the specs of the stock cam
 
Aeroking

Aeroking

e.i.
Re: cam question

graham1524 said:
I am taking the motor out for rebuilding .03 over and rebuilt turbo are only real mods except balancing and head work

would the 412 be good or go for a stock cam if stock what is the specs of the stock cam
Click to expand...

yepper, 412 is as close to stock as you can get.
 
Tooky

Tooky

Serious about performance
Re: cam question

The 412 is a long ways from being close to the stock cam. The stock cam is a 179*/191* duration, .351/.386" lift. The 412 is a 206/210 .500/.500 if my memory is correct (double check me if you've got doubts, www.compcams.com lists the specs.)

To run it on a stock motor you would need to verify clearance for the extra ~.150" lift and probably require some machine work. Probably different valve springs and possibly rockers.

The biggest trade off is, any time you run an aftermarket cam, you throw the engine's airflow off enough that the truck is likely to require a custom tune to run right. If you just want to keep things simple, stick with the stock cam. As an alternative option, Crane makes a real mild cam that's halfway between the stock and Comp 412. The stock Syclone cam really DOES suck but you can make power with or without it.
 
turbodig

turbodig

Active member
Re: cam question

I've got a custom grind cam for stockish heads and turbo that I'd let go.
It's a .480 lift, and like 210 on the exhaust and 205-ish on the intake. It's timed for a higher backpressure turbo (like a stocker).

Brand new, never been run. Installed it, but then took it out when I got a different set of heads.

Asking $250, shipped to your door. (Provided your door isn't overseas)
 
graham1524

graham1524

Well-known member
Re: cam question

interested in the cam for sale sounds good will let you know after i get background info etc...
 
turbodig

turbodig

Active member
Re: cam question

graham1524 said:
interested in the cam for sale sounds good will let you know after i get background info etc...
Click to expand...


I'll PM ya the full specs when I get home tonight... maybe snap a pic or two.
(Looks pretty much like any other cam, though)
 
graham1524

graham1524

Well-known member
Re: cam question

also will any 4.3 camshaft work on these motors or does it need to be turbo specific
 
NecroWolf

NecroWolf

lost marbles member
Re: cam question

doesn't have to be turbo specific, the 412, 415, etc aren't turbo specific cams. i believe the sogt had the biggest stock cam for a 4.3 though.
 
SikVSix

SikVSix

New member
Re: cam question

wow, check out this el cheap-o cam-o, gotta be made of tin or sumtin.

ebay linky

dont think i'd use it but it did catch my eye cause i'm a cheap bastage
 
SikVSix

SikVSix

New member
Re: cam question

seriously though i thought of using the vin Z astro cam if I could get a hold of a cheap one out of yard dog thanks to Hood's bad azz list of cams there. :tup:
I too am mostly stock (longblock wise) and need to see what I can do for cheap.

Get the operative word here...... Cheap. :rotf:

anybody got one layin round you wanna ship my way for a few duckets?

sorry for the :hijack:
 
T

turboj91

New member
Re: cam question

Turbo specific. Doesn't need to be. It it was, would it run stronger - yes. Someone could go on for days about cams. For your case, this is my opinion. Let someone know exactly what your cylinder heads are and what they will be before you choose a cam. No sense of having a camshaft that heads cannot keep up with and vise-versa.

Many years ago when there was a big discussion about our trucks not running the MPH compared to the E.T. I made a statement that I have better flow in my urine stream than do our stock cylinder heads. The poor flow #'s lead to poor performance on the top end. Since you will have the heads off, why not go for an upgrade and then choose a better cam.

If you stay with the stock heads, Dig is not steering you wrong.
 
T

turboj91

New member
Re: cam question

Have to be more specific on your headwork. Stock valves, swirls, oe size or larger, port work, bowl work, short side radius work ect... Right now I am liking the extra lift with Digs cam. High boost with a stock turbo has high compression temps and the extra lift will help with exhaust flow. The durations may be close but the timing may be more desireable with Digs cam based on his comment.
 
NecroWolf

NecroWolf

lost marbles member
Re: cam question

if you can do most of the work yourself you could put a set of vortecs on there pretty cheap while you got it apart.
 
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