very simple, blower is over spun...where most blowers peak boost at RPM i peak boost then drop boost

it has TFS as cast 220s, a 218/218 570/570 112 cam, 1.75 headers, 2.5" y pipe into a 4" merge, 4" exhaust thru 4 mufflers
its on a LC9 5.3 and with ls9 gaskets compression is around 10.3

18* timing on a single m10 nozzle made 539.xx

i drive truck on 12* with no meth which is around 495 rwhp

truck at time had the 10bolt with 342s, swapping the 35s for stock size wheels and tires only saw a difference of 10 rwhp



im actually upset with the power as typically with 12psi from what stuff ive built over the yrs with a turbo makes far more power

the p1sc has a 3.2 pulley on it

 

sorry for thread jacking again

thanks i hope to get somewhere around there, got a bigger cam and gears but i don't have those heads or CR. Is that with a 60E or 80E?

 

first bigger cam doesn't always mean more power

Second i have neither of those trans you mentioned ...I have a 6l80

3rd my compression isn't much higher then stock....it's 0.3 more then stock was


Truck now has 4.88s, which was done for towing

 

cam-tracking, 6l80e still has more rotating mass then the 60 version, thats why i was curious, my cr on my truck is more like 9.5, first year 5.3 problems

 

Correct lm7 are 9.5cr

Also might as well add a lc9 comes with the better intake manifold