blacktransam

iTrader: (13)

ok starting to put this hole thing together.. its a 347ci motor with an S400 now its a 75mm unit with the 1.32 exhaust housing.. now before i get this thing mounted i have the option to pick up a .90 1.00 or 1.25 housing.. i was kinda leaning towards the 1.00 as it would drop me to a 4" downpipe which i like but theres alot of guys making alot of power on 350 cube motors with the 1.32 housing.. its just so damn BIG..

also the car is a built auto with a 3800 converter so spool time isn't the hugest of worries but 4800-5k would kind of suck..

just seeing what you guys thought..

Mike

fenix999

iTrader: (17)

I would use the 1.00 housing. All i have used and all i have senn most of the time is guys using .96 housings with great results without choking or dying up top. The 1.00 should give you a real nice balance and still be strong everywhere. Also like you mentioned tha size of the housing plays a role and also the routing of the downpipe should matter if there is limited space. I say 1.00 and you will be love it

Grr

iTrader: (2)

i have the 1.32 on my 6.0L and i would say definately go with a smaller one. If your going to run 4" anyway i would just go with the 1.00, as the turbine in these is so big you really dont need a big housing to make power, and it is soooo much smaller. The 1.00 should be good for some serious power, and you would be better off having the very quick spool and tightning the converter to a 32-3400 so its more efficient up top.
Gary

blacktransam

iTrader: (13)

what rpm do you typically see full boost at?? and with what stall??

fenix999

iTrader: (17)

full boost with my buddies home made kit on a .96 housing (master power T70) gets full boost at about 3200 rpm in a six speed car. Im very sure the stalled auto would be much nicer as you can stall and load up the turbo. I say get a 3200ish stall so you can build something up while at the line. Some might even say 3500 but it all depends on the converter. Some 3500 converters SUCK daily driving or stop and go traffic because you have to rev the life outta the car to get it moving. Some others are "tighter" and wont be as bad but will still allow for that stall speed that you need for a few psi of boost from a dig. Hope this helps and post up some results, reactions from whatever setup you go with when you are done.

Beaflag VonRathburg

iTrader: (176)

How much does the new turbine housing cost? I can't ever seem to find T6 flanged turbine housings.

Grr

iTrader: (2)

well i think it will work fine now. This year i had kinda long tube headers and was using the stock pickup converter. 13" 1800 stall, really sucked. I would see positive pressure about 3200 and 9psi around 44-4500 leaving off idle. I could footbrake it to 4psi at about 2200 if i could hold it, and would hit 9-10 psi around 40-4200. This coming year i have a 10" 3200 fuddle and switched to logs, literally about half the surface area of the headers so it should spool pretty much instant.
Gary