Real world benefits from cam swap..

2007 5.9

2007 5.9

West Coast Dyno Modifier
Joined
Jan 14, 2008
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I am looking for input from guys who have put in a aftermarket cam.

Looking to see what benefits you recieved from the swap, what cam did you get and why.

I am looking to crack 700hp and still be able to tow at elevation 5500ft+ with reasonable EGT's.

I am currently running DDP 90's and a Super B special, I am looking at getting Flux 3.5's and possibly running a S465 or 468 with a .8-.9A/R or a A5k with a .8A/R.

Would that combo be well supported with a cam swap and why??

Not looking for vendor bashing...just honest real world results and feedback.

Thanks guys.

Les
 
really the best thing about most drop in cams are getting rid of the egr effect of CR cam design... but BIG NOT SOO SMART! lol


i got quicker spoolup and a reduction on egt's. little better gas mileage
 
My turbo spools up better, all around driveability has improved. It's the best mod I've ever done second to my tranny. The truck just runs better. It's hard to explain.
 
Yeah Forrest is right, for your goals you need a set of twin turbos or an alternative means for towing.

But when I installed my cam I had much better spoolup, reduction in smoke at all RPM's/boost, better MPG, and a small drop in boost pressure.
 
Forgot to add in that I agree with everyone else, to acheive your goals your gonna have to run twins. No way a single will be able to tow and cool those power levels.
 
I just had a conversation about cams and ported heads yesterday. They do reduce egt's, spool the turbo faster, but what do they do for peak hp? I've seen Dyno sheets from trucks with aftermarket cams and the tq and hp curves seem to peak at a lower rpm than a truck with a similar setup and a stock cam. Would installing a larger turbo or even a larger exhaust housing move peak numbers back up to a higher rpm on an engine with an aftermarket cam installed?

There's a lot of really good running trucks out there with stock cams. There could even be a stock cam CR running 9's in Redding next weekend. $.02
 
i saw a 20 hp gain with mine, i have a thread floating around here somewhere with dyno sheets and stuff
 
The beauty of a cam is that it brings the power in sooner and maintains it till the end.
 
I'm just not a fan of huge tq numbers at a lower rpm, it tends to break a lot more parts. I'm going for more power in the mid range to top end with a peak of around 700hp at 28 to 2900rpm and still making around 600hp at 3500rpm. It just seems like a lot of work to not know if it would really help me.
 
Forrest Nearing said:
you need to be looking at twins, not a cam
Click to expand...

No twins for me...easier and cheaper to get 700 on fuel without the $3500 price tag. I have a goal on a single that i have to try and achieve.

BrettWINspeed said:
I just had a conversation about cams and ported heads yesterday. They do reduce egt's, spool the turbo faster, but what do they do for peak hp? I've seen Dyno sheets from trucks with aftermarket cams and the tq and hp curves seem to peak at a lower rpm than a truck with a similar setup and a stock cam. Would installing a larger turbo or even a larger exhaust housing move peak numbers back up to a higher rpm on an engine with an aftermarket cam installed?

There's a lot of really good running trucks out there with stock cams. There could even be a stock cam CR running 9's in Redding next weekend. $.02
Click to expand...

I am not really concerned with peak power, just quicker spooling in the event i put a bigger turbo on in the future.

That 9 sec truck also has artificial air though!!!:nos:

CL2000 said:
If i did it over again iw ould do a stock cam
Click to expand...


I thought you liked your cam???:bang
 
You will not be able to tow anything with a turbo that will support 700hp without nitrous. I hated the way my S465 towed even just a pair of 4wheelers and I was not even at 700hp, maybe 550-600 if I was super lucky.

If you are going to put nitrous in the mix then no prob, but on fuel only it ain't happenin'.

Call Joe Hellmann, he makes a twin turbo setup that uses the factory turbo. It will spool great and should support 700hp, and Joe is A++ at fabrication/welding, the stuff he makes is definately top notch.
 
Just because you are making 700+ on the dyno does not say you are going to try and tow at that level. I think your problem will be the 5500 foot elevation, it is going to kill any spooling of a larger turbo. You and I have the super b special and I know when I get up over 2000 feet I can see, hear and feel the difference already and that isn't towing. I think the biggest you are going to get away with is the A5K.

Joe
 
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