Please help me ID this cam
Please help me ID this cam I bought this cam locally used a few years ago and was told it was a GM847. I'm looking at installing it but want to be sure I know what I have. It doesn't seem to have GM847 part numbers, here is what it does have for numbers.
The part number stamped onto the cam shaft behind the fuel lobe is: 109516 03G1A
On the end face of the camshaft by the dowel pin these number are etched:
HR296 - 2S12IG and right below it is 10-35-03
I measured the lobes and found lift to be:
.359 which would be .5385 on a 1.5RR and .5744 on a 1.6RR
.373 which would be .5595 on a 1.5RR and .5968 on a 1.6RR
If anyone could help me out I would much appreciate it!
The part number stamped onto the cam shaft behind the fuel lobe is: 109516 03G1A
On the end face of the camshaft by the dowel pin these number are etched:
HR296 - 2S12IG and right below it is 10-35-03
I measured the lobes and found lift to be:
.359 which would be .5385 on a 1.5RR and .5744 on a 1.6RR
.373 which would be .5595 on a 1.5RR and .5968 on a 1.6RR
If anyone could help me out I would much appreciate it!
I'm thinking this cam may need more RPM than my stock 93K bottom end is willing to take for long. I'm not wanting to spin more than about 6300. My CC305 peaks around 6050RPM right now.
The nick needs to be smoothed out and chamfered. If it catches on your fingernail it may have enough of a rise to really do some bearing damage. I had this same cam and for me it peaked right around 6200rpm.
Thanks for the info. Were you using this cam on stock head?
I am running some mildly ported heads from a long time ago on the car. The guy who ported them had them flowed and were just above the stock LT4 head flow. I know that doesn't say much about the heads potential or flow but thats all I was given for info.
I am running some mildly ported heads from a long time ago on the car. The guy who ported them had them flowed and were just above the stock LT4 head flow. I know that doesn't say much about the heads potential or flow but thats all I was given for info.
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Verdad Gallardo Thanks guys. I think I may install it this winter, it shouldn't cost much as all I should have to change are the valve springs, retainers and locks and gaskets.
SS RRR, what kind of power did you make with this cam?
SS RRR, what kind of power did you make with this cam?
I would add ARP rocker arm studs to the list.
I usually recommend NSA rockers and guideplates as well. You'll probably want 1.52 ratio rocker arms with that cam.
Ya, I've already got all the supporting items you mentioned from when I installed the CC305 that is currently in the car. I do have 1.6 rockers though and thought about going to 1.5s with this cam. Still not sure what I'm going to do, but I have a few months before 09's driving season is over to decide. Thanks guys
Ya, I've already got all the supporting items you mentioned from when I installed the CC305 that is currently in the car. I do have 1.6 rockers though and thought about going to 1.5s with this cam. Still not sure what I'm going to do, but I have a few months before 09's driving season is over to decide. Thanks guys
Ya, the lift with the 1.6 rockers is a little higher than I planed on going. At what point on the stock short block does piston to valve clearance become an issue due to lift?
Ya, I've already got all the supporting items you mentioned from when I installed the CC305 that is currently in the car. I do have 1.6 rockers though and thought about going to 1.5s with this cam. Still not sure what I'm going to do, but I have a few months before 09's driving season is over to decide. Thanks guys
I was planning on new valve springs, retainers and locks if I do install this cam. I agree with you on the power under the curve, I really don't want a combo that just peaks quickly.
What I really want is to do a AI head/cam setup but my stock short block has been through hell (95K miles) and don't want to spend a bunch on the top end only to have the bottom crap out. I would rather just hold off on the AI setup until I am ready to do the entire engine.
I'm just looking at the GM847 cam because I got it cheap and I have the needed gaskets already. Thanks for all the info.
What I really want is to do a AI head/cam setup but my stock short block has been through hell (95K miles) and don't want to spend a bunch on the top end only to have the bottom crap out. I would rather just hold off on the AI setup until I am ready to do the entire engine.
I'm just looking at the GM847 cam because I got it cheap and I have the needed gaskets already. Thanks for all the info.
I was planning on new valve springs, retainers and locks if I do install this cam. I agree with you on the power under the curve, I really don't want a combo that just peaks quickly.
What I really want is to do a AI head/cam setup but my stock short block has been through hell (95K miles) and don't want to spend a bunch on the top end only to have the bottom crap out. I would rather just hold off on the AI setup until I am ready to do the entire engine.
I'm just looking at the GM847 cam because I got it cheap and I have the needed gaskets already. Thanks for all the info.
What I really want is to do a AI head/cam setup but my stock short block has been through hell (95K miles) and don't want to spend a bunch on the top end only to have the bottom crap out. I would rather just hold off on the AI setup until I am ready to do the entire engine.
I'm just looking at the GM847 cam because I got it cheap and I have the needed gaskets already. Thanks for all the info.
