Question for you cam guroos...........
09-26-2010, 11:22 AM
#42
Being that i am the only person who has dyno proof of doing a cam swap I feel that i am qualified to answer this question.
I have put a ls6 02+ cam in my car which is about the specs of the cam that you were looking to put in. I gained nothing from that cam and it was a complete waste of money.
However when i put in my current cam, i started to gain power. My car still idles perfectly and i could even still run dod on it if i put the lifters back in.
Our cars NEED a large cam to start gaining power, otherwise dont waste your money, you wont see any gains.
Just my two cents, take my several dyno graphs for what they are worth.
I have put a ls6 02+ cam in my car which is about the specs of the cam that you were looking to put in. I gained nothing from that cam and it was a complete waste of money.
However when i put in my current cam, i started to gain power. My car still idles perfectly and i could even still run dod on it if i put the lifters back in.
Our cars NEED a large cam to start gaining power, otherwise dont waste your money, you wont see any gains.
Just my two cents, take my several dyno graphs for what they are worth.
09-26-2010, 12:03 PM
#43
Being that i am the only person who has dyno proof of doing a cam swap I feel that i am qualified to answer this question.
I have put a ls6 02+ cam in my car which is about the specs of the cam that you were looking to put in. I gained nothing from that cam and it was a complete waste of money.
However when i put in my current cam, i started to gain power. My car still idles perfectly and i could even still run dod on it if i put the lifters back in.
Our cars NEED a large cam to start gaining power, otherwise dont waste your money, you wont see any gains.
Just my two cents, take my several dyno graphs for what they are worth.
I have put a ls6 02+ cam in my car which is about the specs of the cam that you were looking to put in. I gained nothing from that cam and it was a complete waste of money.
However when i put in my current cam, i started to gain power. My car still idles perfectly and i could even still run dod on it if i put the lifters back in.
Our cars NEED a large cam to start gaining power, otherwise dont waste your money, you wont see any gains.
Just my two cents, take my several dyno graphs for what they are worth.
*Large* by whose standards? It's pretty common knowledge in the LSx world that it's extremely easy to over cam a small CID LS motor. It'd be a different story if we had a 6.0L bore with a 4.8L crank...but we have a tiny bore with a regular stroke. I'm not an expert by any means, and you do have more experience on this subject, but couldn't there be other factors in your original setup that account for the minimal gains?
09-26-2010, 02:52 PM
#45
Well considering i didnt change anything besides putting on headers, i would say the jump from ls6 to my current cam was significant vs the like 10hp i gained on the ls6.
While it is common knowledge that you can over-cam a car. No one has explored this on a LS4. I believe i have the largest cam on this board and also the largest hp and tq. But correct me if i am wrong. I just think that no one else has put down actual dyno numbers to prove my theory wrong. And by large cam, i mean as big as i have gone or bigger.
While it is common knowledge that you can over-cam a car. No one has explored this on a LS4. I believe i have the largest cam on this board and also the largest hp and tq. But correct me if i am wrong. I just think that no one else has put down actual dyno numbers to prove my theory wrong. And by large cam, i mean as big as i have gone or bigger.
09-26-2010, 07:25 PM
#47
Well considering i didnt change anything besides putting on headers, i would say the jump from ls6 to my current cam was significant vs the like 10hp i gained on the ls6.
While it is common knowledge that you can over-cam a car. No one has explored this on a LS4. I believe i have the largest cam on this board and also the largest hp and tq. But correct me if i am wrong. I just think that no one else has put down actual dyno numbers to prove my theory wrong. And by large cam, i mean as big as i have gone or bigger.
While it is common knowledge that you can over-cam a car. No one has explored this on a LS4. I believe i have the largest cam on this board and also the largest hp and tq. But correct me if i am wrong. I just think that no one else has put down actual dyno numbers to prove my theory wrong. And by large cam, i mean as big as i have gone or bigger.
09-27-2010, 08:40 AM
#49
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the ls6 cam that two other people on this board have tried has been unsuccessful. Sittingmongoose was sitting at 315 after the ls6 intake manifold swap without tuning. The ls6 cam is for a 5.7l motor with 10.5:1 cr, manual trans and and a 6500 rpm shift point. Peak torque occurred at 4400rpm. In order to make that cam work well in a 5.3 we would need to bump our compression ratio up .5 free up our intake, change our converter 2200 and use 3.29 gears or better. The best solution would be to advance the ls6 cam 4-6 degrees but this would make the cam act smaller. The tr224 is even bigger (6700-7000K max rpm) so i would recommend 10.5-11.0 cr a ls6 intake, 3" intake piping ( filter, maf and tubing) headers with 3" exhaust, 3000 stall and 3.69 gears. I know mix made power but he is not optimized yet. I would like to see some intake swap results. Bigger is not always better. Rember we only have a 3.78" bore with a big 3.62" stroke. Spinning this motor past 6000 doesn't make much since to me cause of the stroke. Not saying that we won't make power. I just don't know how usable it would be. Generally small bore motors love rpm but they don't have the huge stroke that we do.
Last edited by DavidGXP; 09-27-2010 at 09:26 AM.
