Which cam would fit the bill best??

2007 5.9

2007 5.9

West Coast Dyno Modifier
Joined
Jan 14, 2008
Messages
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Two trucks...

Truck number one...300hp injectors, S478 T-6 Single, currently has a 181/210 107LSA set at .08/.015 sled pulls and drives 100miles everyday. What cam would you recommend for a bump in spool and power over 4000rpms??
Truck curremtly leaves the line at 4600 and carries 41-4200 down the track. Driver would like to get cloer to a 5K launch rpm and carry 4500 down the track.

No flycuts and no headwork...TIA.

Truck number 2...90hp injectors (may be stepping up to 180's), currently has a 181/210 107LSA set at .08/.015 S366 T-4 daily driver that began to pull. Looking for more power over 3500...shifting is currently set at 4200 on the track, but dyno numbers prove power up ther isint useful...
Thinking about your 188/220...
No flycuts and no headwork

Zach, I am looking for your input on which cam would best fit the bill for both trucks.

Thanks for your time....BTW, weve had your 181/210 for a couple of years, but always looking for that NEXT step in evolution.
 
you can only fit so much duration in a motor man. if your wantin the powerband moved up there your just guna have to have flycuts. PERIOD. a cam isnt going to show the hp gains your wanting to see. youll gain hp but it wont be as noticeable as a better turbo/ fuel setup with some good electronic tuning. spend your $600/time elsewhere. just my $.02.
 
I understand your point...but unless the bottom end needs to be yanked due to a failure...it's not.

So we would like a cam that can do better than the current 181/210, and cost isint a issue.
 
It would be nice to get a head flow sheet for the one that wants to go 4500 down the track. Are these P-pumped 24v's?

The truck wanting 4500 is just past the upper limit for the 188-220. It makes great power up 4200-4400 or so depending on head and turbo etc. If you are wanting to get all you can out of that combination though, the 200-220 I believe is about 25 hp over the 188-220 by 4500RPM. The cool thing is you loose 10-12 hp below 3,000rpm but you are sill over the 181-210 in the lower rpm. You will make 10hp peak less than the 188-220 but Like I said, it will make 25hp or so more at the higher rpm.

I have had a few customers use the 200-220 in engines without flycuts, but it gets a little tight. It is your call. If you have not had your head cut, you can fit it in. If you have had it cut, you can back it up a few degrees and make it fit. If you want more in depth on that, call me. I usually suggest .080" flycuts to make it simple, but if you have not cut your head, I can get you hooked up.

Truck number 2 needs the 188-220 for sure. The shifting at 4200 is right before the power starts to trail off too much. Te thing that makes me think you should change the most is that you have our old 181-210. Our new 181-210 is at least 10-12 hp over the old one. The new 188-220 is over that 12-25hp.

Another thing you might do to gain a little bit more bottom end in the mean time, is set your lash at .012"/.015". It will make your truck a little bit more snappy.

Zach
 
Sorry Zach...

Both are 07 Common Rails...I'll be calling you.

Thank you for your time.
 
Hamilton Cams said:
Another thing you might do to gain a little bit more bottom end in the mean time, is set your lash at .012"/.015". It will make your truck a little bit more snappy.

Zach
Click to expand...

Set the intake looser than stock?
 
Good to know, I have the old 181 in my 24v, see if it makes a difference whenever I run it again.
 
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