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Chevy V8 Vortec Cam numbers.

  
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Chevy V8 Vortec Cam numbers.

 
GM-JOCKEY GM-JOCKEY
New User | Posts: 47 | Joined: 04/10
Posted: 04/15/10
06:02 PM

Hi Guys, cant find any info anywhere about Vortec Cams, how many different grinds are there (factory ones) and which one do I have. The numbers on the end are; 1264 fm-L 3009-20. Then there are the numbers on the shaft which are; 29499 2214.
Can anyone help to unlock this mystery..??  

GM-JOCKEY GM-JOCKEY
New User | Posts: 47 | Joined: 04/10
Posted: 04/17/10
03:52 PM

Hmm, looking like its not only a mystery to me  

GM-JOCKEY GM-JOCKEY
New User | Posts: 47 | Joined: 04/10
Posted: 04/20/10
01:18 AM

bump  

redneckjoe69 redneckjoe69
Addict | Posts: 2337 | Joined: 03/10
Posted: 04/20/10
08:37 AM

isky sells a cam part# 201264, megacam, dur 264, lift .450 .  could just be a coincidence, but might be worth checking out.  not tyring to steer you wrong, just nobody else responded. hope it helps.  

tuffnuff tuffnuff
Moderator | Posts: 7828 | Joined: 12/09
Posted: 04/20/10
09:41 AM

Could be Joe,,,
I'm stumped and never ran across that number
Smile  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

GM-JOCKEY GM-JOCKEY
New User | Posts: 47 | Joined: 04/10
Posted: 04/21/10
01:08 AM

THANKS for the info Guys, I didnt think that this subject would be a hard one..!!
will follow up on this.  

redneckjoe69 redneckjoe69
Addict | Posts: 2337 | Joined: 03/10
Posted: 04/21/10
05:53 AM

yea, let us know what you find out.  

Skylark Skylark
Guru | Posts: 1481 | Joined: 02/10
Posted: 04/21/10
12:05 PM

"Ol boy tell us xactly what the vehicle was and we may get a better idea they'r were not that many versions year too if you can. then there is always the Dealer  

GM-JOCKEY GM-JOCKEY
New User | Posts: 47 | Joined: 04/10
Posted: 04/22/10
01:30 AM

The story goes, that the cam came out of a 1999 GMC Yukon. (it also has green paint around the shaft alongside the dizzy drive gear.) Dont know if that means anything.
I was told by one dealer, "there are numerous factory Vortec Cam options." so with that in mind I set out to find what sort of grind I have.  

Skylark Skylark
Guru | Posts: 1481 | Joined: 02/10
Posted: 04/22/10
04:33 PM

the green paint is an I.D. as well as numbers.that dealer might not know how to read.  

GM-JOCKEY GM-JOCKEY
New User | Posts: 47 | Joined: 04/10
Posted: 04/24/10
01:49 AM

BUMP  

tuffnuff tuffnuff
Moderator | Posts: 7828 | Joined: 12/09
Posted: 04/24/10
07:14 AM

GM,,,
Mic the base circle and then across the lobe,,, subtract the small number from the large number,,,,,, and multiply by 1.5 (your rocker ratio) the number you get will be your valve lift.
With that "hard" number you can start searching for what you really have,,, besides green paint.
Wink  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

idrivejunk idrivejunk
Addict | Posts: 5117 | Joined: 12/09
Posted: 04/24/10
08:46 AM

I've never seen anyone positively identify a cam from markings. Blanks marked the same way could easily be different grinds. It has always been a case of measure it like tuff said, and get an idea then live with it, or replace the cam so you know what you have. At least in a flat tappet world, anyway. I recommend the latter, but thats just me.  
idrivejunk

gettnlarge01 gettnlarge01
Addict | Posts: 3330 | Joined: 09/09
Posted: 04/24/10
04:05 PM

you could always use a degree wheel and spare block to make a "CAM CARD"  
luck is when skill and opportunity meet

tuffnuff tuffnuff
Moderator | Posts: 7828 | Joined: 12/09
Posted: 04/24/10
09:58 PM

Icon Quotegettnlarge01:
you could always use a degree wheel and spare block to make a "CAM CARD"

That's a lot of effort to put in a "nothing" cam,,,
Find true TDC with a positive piston stop,,,
get a dial indicator on each lifter,,,
log the indicated degrees,,,
do all the math,,,
and find out you have .390" lift
I'm surprised I even typed all this,
get a new cam and lifters,
it's cheaper and better
plus now the cam has ID
Grin  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

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