1998TA__1991RS

iTrader: (23)

i need some help with my setup, im going to be running a foged 347 (stock crank) at around 9.0:1 compression. my goal is for around 850-900 rwhp and still be streetable, this will be a truck manifold kit also. im looking at a borg s475, or a pt88, would this be achievable on the s475? any other good choices without droping alot of cash on a turbo?

1998TA__1991RS

iTrader: (23)

also this is mainly an 1/8th mile car, it may see the 1/4 a couple times a year, im shooting for high 5's with the setup

Orangemagic

iTrader: (2)

I would also like to know

ScorpionT

What kind of setup do you have?

devilssled

it depends on how fast u want to get full boost? i would choose a devided turbo with a lower A/R so it will spool fast as hell. mp76 or the new mp80 thats comming out

1998TA__1991RS

iTrader: (23)

well being an 1/8th mile car i would like it to get into boost pretty quick, would high 5's be achievable with a 76mm?

cablebandit

iTrader: (37)

i would think a s480 would work well ...ask Jose at Forced Inductions

1998TA__1991RS

iTrader: (23)

i pm'd jose last night, still waiting to hear back


where can i find some info on this mp80?

DrTurbo

iTrader: (3)

You will need at least a 80mm to 88mm for the level of power and speed you are wanting.

1998TA__1991RS

iTrader: (23)

so i guess its 80-88 then, im looking out for a good used one, how much would a new 80mm run?

LSX Truck

streetable as in power off the line? or just driving around town. I'd go for a T76 with the ability to up the boost when needed

Josh@KY-Turbo

iTrader: (120)

There is a New T4 based 91mm Unit to consider.

DrTurbo

iTrader: (3)

Yeah forgot about that one as well.

4SFEDZ

iTrader: (6)

im runnin a s475 on my lt1 and its gone 6.20@112 2nd time out on pump gas. so i think with good flowing heads and a good spec'ed cam a s475 will get you there but itd be maxed out! it would prolly be pretty laggy on the street tho!

DrTurbo

iTrader: (3)

You prefer to run a turbo around 80% most of the time if you can. 100% will mean rebuild and lots of HOT air from the discharge.

1998TA__1991RS

iTrader: (23)

streetable as in able to drive it around or to work if i wanted


can i get more info please on this 91mm t4?

DrTurbo

iTrader: (3)

HP series 91mm comp wheel with mid-frame package. T4 turbine housing.

1998TA__1991RS

iTrader: (23)

any more suggestions? what size wastegates should i be looking at?