HaxbySpeed

Like these?

KAAMA

iTrader: (1)

Yeah Steve, I really appreciate the advice on the EFI, but guess I'll just have to eat a little dirt on this one and if that means sacrificing a little top end power for good idle/drivability then so be it. I think you know me well enough that I am not trying to set any world records. I have always said that I am just a weekend warrior. I could probably swing it, but have some financial commitments at the moment----just tryin' to get my lil' puddle jumper in the water for now, bro. I will have that EFI stuff one day soon enough! I could aalso dry sump my drives too, but a little here and a little there is how it will happen for me.

KAAMA

iTrader: (1)

Dang Hax,----how many heads come in one box??? You must have a lot of work to do for the winter!

MILD THUNDER

iTrader: (3)

Hey Mark, I dont think you will be dissapointed in the carbed roots setup.

My buddy built a set of blower engines last year, 509CI, 238/248 112LSA cams, 8-71 mooneyhams, superchiller intercoolers. Engines dynoed about 800HP and 800FT lbs give or take a few. Idles good, no plug fouling or stalling around the dock.

I ran almost the same cam as him ,in my smaller 460CI engines, 250 blowers with single dominator. Intially i had them setup with 12* base timing, and a 18* advance. They would puke when put into gear cold. Locked them at 30*, much better. Idle all day, no fouled plugs, no stalling.

From what ive seen, if properly tuned setup, the supercharged setup seems to idle/start better than the same setup N/A. Fire up with a slight blip of the key.

Granted you'll have larger blowers, and larger carbs, but also larger engines.

Mange

I had the 532" 14-71 with EFI. Solid roller. Dart Pro1. Great engine by JC Performance. But we had some brain failure once and runned it on low octan... Since we had the new build 572ci 4.2L screw the 532ci engine went to a new owner in Finland.

I know the tech guys here got lot knowledge and will put you in the right direction. But I have to say the 14-71 roots was a real hardcore blower


Mange

The 572ci/1095hp and the JC 532ci/930hp

benjen

Kaama, I didn't take offense at all. I thought maybe you knew something I didn't. As far as the bigger head is concerned it has a 2.35 intake in it whereas the 357 has a 2.30. I have been told that valve is good for a few more hp. So, I thought if I could step up why not?

sutphen 30

just like that,need i post ours.they look the same.

sutphen 30

they were alright,made 1066hp,1076tq at a correction factor of .98%.we want a solid 1200hp,so a head change is in order,plus a better cam.

KAAMA

iTrader: (1)

What peak RPM's were you turning with the 357's AFR's?....and do you plan on turning the same peak RPM's with the 385's? Hydraulic or solid roller on both?

Ok, wasn't sure I was reading you right. And as far as me knowing something you didn't---hey, I'm still in the classroom with a learning curve on much of this blower and head stuff.

KAAMA

iTrader: (1)

Thanks for the input. It's interesting to hear about other examples/set-ups with the roots, etc.