99 black ss sj

iTrader: (8)

Just looking for some info on these setups, are they more track setups or can they be street setup as well with a 6 speed with 12-15lbs, im pretty much getting my car ready for a turbo setup, just need to upgrade my clutch and throw in little more suspension and i should be good to go, When i began building my car i said my goal was to hit low 9s with a 6 speed running just pump gas but still wanted to be a street car is this possible or do i have to sacrifice going to maybe smaller turbo so it can be a fun on the street?? also wanted to know you guys opnion on whats a good turbo setup with a 408 6 speed.thanks

theblur98ss

iTrader: (71)

Sounds like you're stuck on being a 6 speed and that will be the biggest challenge. The s91 is a great setup for a 408. I plan on running 7lbs on the street and upto 18 or so at the track.

99 black ss sj

iTrader: (8)

6 speed or auto?

99Z28LS1

iTrader: (4)

it would be "ideal" to run an auto with a turbo because of how much more the auto will load the turbo, but no one says that rowing through the gears with a turbo wouldn't work!

I don't think a S91 would be necessary to put you in the 9s, the PT88 would do it just fine and I'm sure that it would cost less

hell... Ninetrees is in the bottom 9s with a lil ST80

venom ws7

iTrader: (13)

Search Firechicken and TranzM (maybe I got the users wrong)

Both have 408ci with 91mm Tranzm made 893rwhp with 13-14psi
Firechicken's car spools at 3500rpm with that turbo and M6 and dead hooks on the street.

I wouldnt go anything smaller than 91 on 408ci IMO.
With M6 9s shouldnt be a problem if you can drive and if the car is not a pig


Good luck and keep us posted.

99 black ss sj

iTrader: (8)

Yeah i really like s91 setup but like i said how streetable is the setup with a 6 speed and try to search their names hofefully they can shed some info thanks

venom ws7

iTrader: (13)

I can tell you this both cars were very very steetable and both ran 91-93 octane with over 800rwhp.

longrange4u

iTrader: (2)

Eh...

I dont completely agree with this post. If you are going to stay with the 6-speed you need to go with the smallest turbo to get you to the right numbers. I would look at FI's tricked out ST80 (I think it has an 84mm wheel)... I like my PT-88 as well... both capable of the numbers your looking for.

It will just be hard to launch in boost with a manual trans!

Jared

otherwhitemeat

iTrader: (3)

I disagree with you...... I have an M6 car with a Ez94, 383 cubes.. Made 1080rwhp as low as 24psi and dead hooked all of it from a roll with Nittos.. It spooled so fast I had to slow it way down......

Beaflag VonRathburg

iTrader: (176)

Firechickn's car has a 4l80e in it now.

It all depends on your goals with the car. A pt88 will get you a 9.9xx pass, cost less, and be easier to fit. An S91 is a bad mother though and would really put it over the top. It is up to you to decide.

02SSLE

iTrader: (26)

If you look back at Mighty mouses car when it was a 6 speed. I believe he only got in the 9's one time with a 1000rwh. He put a 4L80 in it and went 9's all day long. I have had a PT88 setup with a 402 and the turbo is just not big enough. It made 65psi of back pressure at 17psi. That is way too much. With the big cubes you need either two small turbos or one big one. Roll racing alot different than drag racing at the track. You will need a 2 step with the big turbo to leave on boost. Also if you have a stock trans it's not going to hold up. I blued the gears in my trans with 750rwh. Alot of thing to think about.

otherwhitemeat

iTrader: (3)

Yes, I think a pt88 is too small also...but M.M. could have got close to the eights with a stick and the pt88 if he would have tried harder..... If you have 1000rwhp you dont need to cut any good 60 foots to make a 9 sec pass..

venom ws7

iTrader: (13)

Huge diffrence between front and rear mount turbo cars.
88 is small for 408ci members are using it for 364-383ci there is a member here using 91mm with his 383ci TH400 T/A.


Like I said if the owner can drive and the car is not a pig 408ci 91mm turbo will easily run 9s.

99Z28LS1

iTrader: (4)

that's enough to run 8's

ninetrees ran bottom 9's with a ST80 and a 370, Veee8 ran 8's with a 370 and 91.5

Modern_Muscle

iTrader: (11)

I think the turbo size would be dependent on what purpose he wants the car to serve, and also is the bearing on the transmission choice.

If you want a fun street car, I like the 6 speed behind mine. Kind of a "fun factor" so to speak. and launching the car in boost with a 6 speed isnt very hard either. It takes a little trying to learn it, but once you have it down, its cake.
IF youre building the car to shine at the strip, put an auto in it. Thats a proven fact that they are so much more consistent. I cant shift in 1/10 second, and I'm pretty sure that no-one else can either.

A larger turbo is going to take a few more RPMs to spool, but will produce more power when the smaller maxes out at XXXrwhp. The smaller one will put you in boost sooner, and depending on the housing used, can do just what you want for a little less money.

Mine starts at about 2800 in mine, and I can still DD it out of boost easily.

02SSLE

iTrader: (26)

The thing you guys I don't think are realizing is that when you let off the gas to shift you lose all your boost and have to build back up. You guys are making it sound easier than it is. Been there done that.

Modern_Muscle

iTrader: (11)

True, but the boost I lose comes right back immediately once my foot leaves the clutch.
Shifting doesn't take long, but like I said, if he wants a consistent track car, or street car, auto is the way to go.

I personally love the sound of a BOV, and love driving a 6 speed.
Which is why I have one.

99 black ss sj

iTrader: (8)

What im trying to figure out is how street able is this combo or am i better off going to a little smaller turbo and just and turn the boost a little more maybe between 15-20, i am definitely staying with 6 speed that i know for sure, so far i heard only one say its very street able with 12-15lbs pump gas

black01_WS6

iTrader: (13)

your best bet it going with a manual valve body auto. The 6 spd will be very hard to control going down the track. At that power level have fun replacing the hydrolics, clutches and possible a tranny or two. It just really isn't worth it in the long run. There are just too many positives to going with a auto.

02SSLE

iTrader: (26)

12 to 15 psi is no problem. I ran 16 on pump gas alone 8.5 to 1 compression tho.