396ci LT4, YSI and 15lb of boost dyno result :(
#101
I cant agree more with what Mike said. The boost gauge this time was reading 20~ psi before even it hit the rev limit-at the IC inlet-. while the outlet boost is 15 psi just before it hits the rev limit.
#102
9 Second Club
You must have some seriously **** intercooler ?
Although it also raises the question....just how different is a solid roller profile compared to a hydraulic ?
Although it also raises the question....just how different is a solid roller profile compared to a hydraulic ?
#106
TECH Fanatic
iTrader: (2)
definately intercooler. Look into going front mount, i had around .5psi of pressure loss on my ebay frontmount at 12psi, couldnt tell exactly but it was in the .5 area by watching the guage. You will like that 8" pulley, heres what i did:
forged 355 9.4:1
STOCK heads, not a drop of modification
918 springs with Ti retainers
1.54:1 pro magnums
ported LT1 intake
stock throttle body
pacesetter headers, dual 3" exhaust
basically had the cam lloyd elliot mentioned, 226/232 .590/.600 114lsa 110Icl if i recall
YSi
FMIC
T56 mcleod twin, 9" rear
I only had it on the dyno one time, that was before i made the pulley setup. It made 11psi boost at the intake, A/F was in the 10.0 area and 14* timing on pump gas. I was using the stock Ecm in 2-bar and was way the hell off on my baseline. It threw the belt after 3 pulls when i finally got the AFRs to register at 10.0 (it was in the 9s to start) and i had to go home.
It made 522whp/478wtq on a mustang in that configuration, picking up 40whp every pull as i figured out the tune.
Later I fixed some issues and put a new belt on, with the crappy air inlet off and it made 20psi, so that was also a big restriction
I made a bunch of changes that winter switching to 10-rib with a manual tensioner and it was making roughly 675whp with the same stock heads just getting the blower setup to actually work doing 15psi and running 11.5afr at 24* timing
forged 355 9.4:1
STOCK heads, not a drop of modification
918 springs with Ti retainers
1.54:1 pro magnums
ported LT1 intake
stock throttle body
pacesetter headers, dual 3" exhaust
basically had the cam lloyd elliot mentioned, 226/232 .590/.600 114lsa 110Icl if i recall
YSi
FMIC
T56 mcleod twin, 9" rear
I only had it on the dyno one time, that was before i made the pulley setup. It made 11psi boost at the intake, A/F was in the 10.0 area and 14* timing on pump gas. I was using the stock Ecm in 2-bar and was way the hell off on my baseline. It threw the belt after 3 pulls when i finally got the AFRs to register at 10.0 (it was in the 9s to start) and i had to go home.
It made 522whp/478wtq on a mustang in that configuration, picking up 40whp every pull as i figured out the tune.
Later I fixed some issues and put a new belt on, with the crappy air inlet off and it made 20psi, so that was also a big restriction
I made a bunch of changes that winter switching to 10-rib with a manual tensioner and it was making roughly 675whp with the same stock heads just getting the blower setup to actually work doing 15psi and running 11.5afr at 24* timing
#109
OWN3D BY MY PROF!
iTrader: (176)
I think in more of an extreme combo turning lots of RPMs it would depend on if your oiling system is up to the task. LTLHOMER used to have Harlan's old twin PT66 kit. It was a 347, ported stock 241 heads, and a solid roller setup that blew at 8200rpms. It ran 8.78 at 21psi and this was 2006.
I think with the advances we've had in engine and tuning technology a solid roller in a setup like that starts to lose some merit. Don't get me wrong as I think it has it's places, but Mark Koehler ran 7.4- on a hydraulic setup. He is now going to a solid setup, but I think it depends on your car and preferances. With the monster ramp rates on cams and accelerated rate rockers out there now you can get the same kind of aggressive lobes if not exceed them with a hydraulic roller.