I am putting a LS1 in a P/U but I am installing a LS6 cam first (02 model), I would like to keep my torque down as low as possible and don't need to turn over 6,200 rpm's. I have the new SDPC timing set with the adjustable position crank gear, do I need to set it on 0 or advance the cam timing to better suit a heavy vechicle?

 

I don't know about the cam question but I'd sure like to hear how this works out.

 

Another Arkie. Well I am a arkie only part time now till I start school in the fall down back to my real home TEXAS. Anyway if you are only turning 6200 why do you want less torque? I wouldnt think you need to degree it if you are trying to keep torque away. What year is this truck? What size ls1?

 

I think you misunderstood me, I want to get as much torque as I can at as low rpm as possible and I don't care if it will turn over 6200. The engine is out of a 00 WS6. I have not yet installed the engine but I will start pulling out the 4.8 tomorrow. I went ahead and advanced the cam timing 2 deg. on the LS1 unless someone tells me different hoping to lower my rpm range and gain torque at a lower rpm.

 

I would deffenently set the cam timing to the advanced position on the timing gear. I would also invest some time with a degreeing wheel to check where the valve timing is actually occuring.

 

I just ordered an adjustable chain set too cause I'm gonna put this factory '00 Z28 cam in my 5.3 and advance it 5°. Sence the lobe centerlines on the 5.3 are 112/116 and the Z cam's is 117/122 advancing it will bring them back to 112/117 and hopfully give me a good boost all the way through.

The larger displacement of the ls1 probably won't need as much advance though. The centerlines on the '02 LS6 are already 115/120 verses 117/122 so I'd start out at maybe +2 - +3° and see how it does.

 

How much did the adjustable timing set cost?

 

I got the timing set from Scoggins Dickey Parts Center for $85. You can advance or retard in 2 deg. increments up to 8 deg. It has a torrington needle thrust bearing on the back of the cam gear and the set fits with no slack. It is called a rollmaster and has double rows.

 

Several of the guys with aftermarked cams are getting only 2* ground into the cam. I cant recall anyone getting 4* yet but it has been recomended. Like JW said, try 2* first and see how it does.

 

I assume this is the stock cam you are talking about in the LS1? If so, I'd think 2 degrees would be enough, but 4 degrees would move it down even more, but you'd lose power. The stock cam is fairly small. What you need is an 01 LS6 cam and advance it 4 degrees. It comes 2 degrees retarded. I have the same timing chain and plan on advancing my 218/218 cam at least 2 more degrees.

If you have the motor out, I'd highly recommend that you install some cam in it before you install it in the truck. It would be so much easier now. I think that 00 LS1 cam is on a 119.5 LSA with 2 degrees retard ground in.

Take a look at this thread:
https://ls1tech.com/threads/showflat...31&fpart=1

Think about how much power you are giving up by not installing even a small cam.