comp has a 215 604 lobe too. its a lsl lobe and suppose to be ok on springs. i was told the xer lobes, while short are still pretty hard on the springs. the lsk open a touch slower but are really high lifts. the lsl's are suppose to be in between. the taller lifts are suppose to yield more under the curve torque which is the whole reason for short duration cam, right? i was told just to make sure the oil temp is up before you smash on it. you have tards out there that just fire up a car or truck and roll and that's hard on the eng and trans not to mention cold springs.

I'm not arguing just asking questions is all.

 

here is my dyno graph...

stock 5.3 shortblock
02 ls6 cam
317 heads
LS6 Intake
prc dual springs
7.425 pushrods
Front mount Master Power T70/.96A/R (14psi)
Open 3" downpipe
3" intercooler and charge pipe
siemens 60# injectors
Dual in-tank Walbro's
Auto-lite 103's gapped at .32
MSD wires


power falls on its face check it out... there are hptuners logs of the runs log5 matches the first dyno pic posted... there are more dyno graphs posted further in the thread...


https://ls1tech.com/forums/dynamomet...raph-like.html

What do you guys think????? I figure you are more familiar with the 5.3 over here....
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O ya i notice some of the other graphs do similar to mine.... is this common for the 5.3 with 02 ls6 cam????

 

I'm having the same issue with my truck and have been checking everything on the dyno to figure it out. I'm going to put better valve springs in soon and see if it helps me. I don't understand why I lose 50rwhp but then it starts to recover and it only does this above 8psi. Here is my sheet.