GM Camshaft Identify
 

Hello,

I have a GM camshaft I am having a hard time figuring out what the specs are.
The numbers on the end of the cam are:

09406R and 071AC

There are no other numbers on the cam. Any help or link to a resource that I can look up this cam and get the specs would help me out alot. Love the forum and there is a lot of great people here.

MikeM

Re: GM Camshaft Identify
 

I know you said there are no other markings on the cam but this site states that the ID markings are usually in the center of the shaft between the lobes
https://www.nastyz28.com/sbchevy/sbccams.php

Re: GM Camshaft Identify
 

Is this a new GM branded camshaft or aftermarket? The 09406R looks to be laser etched rather than stamped like you would find on an original camshaft.

Re: GM Camshaft Identify
 

I did find another number on the opposite end as the distributor gear that is between two lobes. Its either:

ACL 04 287 221 or
ACL 04 287 201

Not sure hard to read But it may help

There are no marking in the center.

Re: GM Camshaft Identify
 

is this a flat tappet camshaft or a roller? What engine?

Re: GM Camshaft Identify
 

I have a 305 "peanut" cam from a 1989 firebird with TBI and it has laser etched part number and QR code on the end and stamped 603 between #1 I&E cam lobes

Re: GM Camshaft Identify
 

This is a 90's 350 crate motor with roller lifters and from what I have been able to tell its a Vortec block.

Re: GM Camshaft Identify
 

Can you look where the fuel pump lobe would be and post a picture?

Re: GM Camshaft Identify
 

Here is the picture where that number is on the fuel pump lobe. Its pretty hard to read.

Re: GM Camshaft Identify
 

What happened to the lobes?

Re: GM Camshaft Identify
 

Not sure what you mean...but this cam came out of an engine I bought but I have replaced with a new GM cam. I just want to find out what this cam is since it was an unknown.

MikeM

Re: GM Camshaft Identify
 

Was it stored underwater? I would not run that cam with all those pits-even being a roller. Too much risk. I would say that cam is scrap metal. If it was in a Vortec block it's probably a Vortec truck cam no?

Re: GM Camshaft Identify
 

looks like someone carved those numbers with a die grinder and a bad case of the DT's ;-)

Re: GM Camshaft Identify
 

my eyes are crap, but does anyone else see ACL04. then 387201 ?
Thought for a second that ACL was the brand, but they make bearings, not cams

Re: GM Camshaft Identify
 

oh...those are not pits it is some left over oil and lube when it was taken out. It wipes off and the lobes are smooth....it just how the camera picks it up. Yes probably a vortec truck cam....just trying to figure out the grind.

Re: GM Camshaft Identify
 

Yeah....I don't get the laser etch look. I kinda though the acl meant AC Delco....but I don't know....just hoping someone does. I would like to figure out the grind.

MikeM

Re: GM Camshaft Identify
 

I will upload a 350 vortec cam later tonight.

Re: GM Camshaft Identify
 

Camshaft, notice the 345 where the fuel pump lobe would be