Why more RPM's???

[Heetseeker_1]

I see alot of you guys running the GSK 's and I'm kind of wondering what it would do for my setup.



What are we trying to do with raising the RPM's?... bringing the HP up?



Also, does it affect the way the truck picks up speed?



Not clear on the upgrade



Any help would be great.



Thanks, Steve.

 

[Cummins Corvette]

IMO it just lets the engine rev farther with out defeuling. In most cases I don't think it adds any hp because the peak for a 12v is 2500 rpm, and as you go past that the hp goes down (unless you have a cam made specifically for high rpm). It sure feels like a hp gain though! A very worth while mod IMO.



Chris AAYS

 

[BCFAST]

Piers explained to me that, depending on your cam plate, the GSK can add as much as 40hp!!! What I noticed was that the motor pulled as hard at 2800 as it did at 1800 ... . the fuel and boost didnt peter-out.

 

[Boldt's Wagon]

I had 250 HP (BD dyno) with #8 230/605 plate and 215 injectors. After I replaced the stock muffler, installed a MHAF and Piers installed the 3000 rpm GSK, the truck dynoed at 294 HP at 2560 rpm (DD dyno at 2002 MM).



A 44 HP increase and still pulling at 2950 rpm/210 HP vs out of power at 2650 rpm before the GSK install. The torque and HP at lower rpms seems the same. The spring kit hits the torque plate at higher rpms and increases the rpm range that the lower rpm/higher torque values are in effect. I feel that that the GSK has a greater effect with fuel plates that have a high torque rise as rpms decrease. The GSK gives you a flatter torque curve but does not increase the maximum torque or fueling per injection stroke.

 

[Heetseeker_1]

40hp with #6 plate?

Got it. So the truck will still pull about as hard as it does when in the present power band, close to 3k rpm.



For the 40hp, it sounds like a great deal for the 12v. Another question,,,,does it work differently with a #8 as it would with a #6 with respect to the range of pull? In other words, can I expect the same results ay you with the #8?...



Thanks,



Steve.

 

[ZEEEW]

My 96 will max out at around 3150 RPM now. Will a 3000GFK change this, or would it be worth the trouble for me? What does a spring kit let the engine top out at?