cam guys, come on in got a question for ya
#1
Thread Starter
single digit dreamer
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Joined: Mar 2002
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From: omaha ne
just ordered a cam for my future boosted 409. i let seth
from cmotorsports pick it out.
it is a 234/232 590/590 114
my question is should i toss this in my 6.0? how lumpy will it be? how hard to tune? i asked seth and he said he would put it in if it was his truck but he is kind of crazy i think. he basicaly said he would try it just to see what it did and swap back in the stock if it wouldn't run.
soo, how will it run? will it be faster than a stock cam NA and with nitrous?
good news is he seems to be sticking to the 2 weeks or so timeline. i can't wait!!!!
from cmotorsports pick it out.it is a 234/232 590/590 114
my question is should i toss this in my 6.0? how lumpy will it be? how hard to tune? i asked seth and he said he would put it in if it was his truck but he is kind of crazy i think. he basicaly said he would try it just to see what it did and swap back in the stock if it wouldn't run.
soo, how will it run? will it be faster than a stock cam NA and with nitrous?
good news is he seems to be sticking to the 2 weeks or so timeline. i can't wait!!!!
#3
TECH Junkie
Joined: Mar 2002
Posts: 3,019
Likes: 1
From: memphis tn
It should peak about 6500rpm,make really big hp with the nitrous/turbo combo and have slight lope in the 6.0.Weather you should run it in the 6.0 or not depends on how much abuse you think the 6.0 will take.
#4
It should run, but a tune will be mandatory. You are about to learn a completely different side to the Edit tuning: idle and drivability.
Fortunately, your converter will save you some grief with that big of a cam. By the time your converter catches, your cam should be making power. What is Yank going to do with your converter?
Thats going to be hard to say where it will peak. I haven't seen what a turbo does to a cam. On an N/A engine, it would definitely need to spin to the upper 6000s. With a 409, it will come down lower, maybe 6500.
Are you going to run it stock w/ cam and nitrous? When you do blow up your stock 6L again, I doubt that the cam will be harmed. Its usually the pistons/rods/block/heads that take the beating. Although last year when SS Escsalado was bumpping the revlimiter on a 150 shot, he snapped his crank (althoug a rod could have let go first).
Fortunately, your converter will save you some grief with that big of a cam. By the time your converter catches, your cam should be making power. What is Yank going to do with your converter?Thats going to be hard to say where it will peak. I haven't seen what a turbo does to a cam. On an N/A engine, it would definitely need to spin to the upper 6000s. With a 409, it will come down lower, maybe 6500.
Are you going to run it stock w/ cam and nitrous? When you do blow up your stock 6L again, I doubt that the cam will be harmed. Its usually the pistons/rods/block/heads that take the beating. Although last year when SS Escsalado was bumpping the revlimiter on a 150 shot, he snapped his crank (althoug a rod could have let go first).
#6
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single digit dreamer
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From: omaha ne
hmmm, with stock rods but good valve springs how high is safe to spin it? i am sure 6500 will be fine with all the forged stuff in the 409.
i sent off the yank, they should get it on monday. i asked them to shoot for a 1000rpm drop. it was 4000na and 4700 with a 125shot. we will see what happens there. a 3000stall na would be GREAT.
hey, i forgot to ask seth about pushrods, dont they start to grind these cams on smaller centers in order to get the lift? at what point do they do that and when do you need diferent pushrods?
i sent off the yank, they should get it on monday. i asked them to shoot for a 1000rpm drop. it was 4000na and 4700 with a 125shot. we will see what happens there. a 3000stall na would be GREAT.
hey, i forgot to ask seth about pushrods, dont they start to grind these cams on smaller centers in order to get the lift? at what point do they do that and when do you need diferent pushrods?
#7
Banned
Joined: Sep 2002
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From: Azle/Saginaw, Tx
there are a bunch of 5.7 guys spinning stock rods to 6500, just make sure your setup as safely as you can be with your tuning to minimize the chances of something shitty happening. you already know that but it's something that can't be said enough. i would spin my motor that high but i don't have edit, but when i was spinning it to 6200ish with the hpp3 it never had any trouble and i sprayed a ton on it at that limiter. i'm not sure about the pushrods completely but i'm gonna say stock length will be fine as long as the heads havn't been milled at all. but like i said, i'm not 100% sure.
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#8
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single digit dreamer
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From: omaha ne
Originally Posted by 99silveradoSS
Will that cam hold the boost better than something like a 228/236-.590/.590-114LSA? Hey, how much was the turbo kit?
#9
Any cam with more lift than the stock ~.500 lift has a smaller base circle. You can't increase the lobe height due to clearance issues installing the cam. The base circle is made smaller which in effect makes the lobe taller. Remember that you have to take out the 1.7 multiplier from the rockers, so that extra .090+ valve lift you have is really .052 on the lobe. Stock pushrods are 7.380ish, and aftermarket rods come in .050 increments. Now, you need to add up any other factors that might change the geometry - different compressed thickness head gaskets, milled / surfaced heads, etc... If all else is stock, you need an additional .05x length pushrod, so a replacement 7.4 would be a little short. I think you'll need a 7.45" pushrod.
Yes, the 409 should be able to handle 6500 without issues. Its your stock 6L thats going to have problems, but you know that. Make sure you get dual springs and titanuim retainers with that many rpms and that much lift.
I hope that Yank can get that converter down to those specs. I cant wait to see that turbo in action.
Yes, the 409 should be able to handle 6500 without issues. Its your stock 6L thats going to have problems, but you know that. Make sure you get dual springs and titanuim retainers with that many rpms and that much lift.
I hope that Yank can get that converter down to those specs. I cant wait to see that turbo in action.


