Kreinmc

I am in the process of trying to pick out a cam for my car and I have quite a few questions regarding a few of the cams I am looking at and the DCR the cams would put me at. Here is a run down of what my setup and what I am trying to accomplish. The motor is currently completely stock with 1.7 roller rockers. I am trying to choose a cam that is medium sized (0-8 degrees of overlap) that will put out 345rwhp and allow me to shift at 6300rpms. I had originally planned on running a cc305 on a 110lsa, but I have started to reconsider after reading about DCR and advance.

What is the stock DCR and what is the advance built into the stock cam?

Does anyone have the complete specs for the cc305 to do all the dcr calculations?

After reading a little bit about DCR it looks like the goal should be to come out right around 8.5.

A few of the other cams I was looking at are XE grinds and the specs would be...

224/236 112 LSA
6 degrees overlap
.570/.590 lift w/1.7

or

218/230 110 LSA
4 degrees overlap
.561/.578 lift w/1.7

I do not have specifics about the cams right now, but hopefully compcams can provide them to me before I decide to pick one. What do you guys think would be the best option for me?

Thanks

sssalah

The only camshaft parameter needed to calculate DCR is IVC, that can be calculated if the ICL or cam advance and intake adv.duration is known.

Compstall

345 hp would be on the upper end of a 305 cam, but a 306 cam would put you right in there no problem.

Kreinmc

I had a 306 in my last car and it was very strong (112 mph with stock heads), but I do not want to deal with the drivability problems that the 306 gives you. The 306 made absolutely no power until it hit 4500rpms and it would surge below 2k. I am going to do something medium sized this time and I want to make sure that I pick the best cam possible. I also had the 305 in my last car and it ran ok, but did not quite make the power I had hoped it would.

Compstall

Understood.

WS6T3RROR

if you're looking at custom cams and looking to calculate dcr what you need to know is the adv duration (intake) and what icl you're looking to install the cam on. then all you have to do is take half of the adv duration and add it to your intake centerline then subtract 180 from it and you have the abdc ivc.

fwiw imho, your example cams have too much exhaust lobe and lsa.