turbo_v8_s10

iTrader: (9)

Just like the title says. I am looking for turbo for my 89 s10 with a 403 lq9. I would like boost asap wile able to put down 850-1000rwhp threw a 4l60e.

98Z28CobraKiller

iTrader: (17)

The 4L60 will not live at 850 rwhp. It wont live at 500 rwhp for long. Why are you space limited? My S10 beater has tons of space when compared to an fbody or vette. Do you already have the shortblock built. If not, don't. A 40X will require a large frame turbo to operate efficiently. With a 347 or 364, and a nice midframe, you could reach your goals easily and have a smaller package to deal with.

turbo_v8_s10

iTrader: (9)

The trans is a finish line 4l65e level5 sorry. The motor is not built yet. I guess my real question is what is the smallest turbo for that size of motor with those power goals? What turbo would be best for 403 or 370? Thanks again!

Shawn @ VA Speed

iTrader: (3)

i agree,you would need a gt4788 minimum-they are not very small.If you run a 370,you could get away with a t4 fanged pt88 with is a much smaller turbo.1000hp 4l60

t-1

iTrader: (20)

run truck manis with twin gt35's or some basic 61mm t3/t4s. best way to fit and make big powah. if the motor is not built yet. run a 370 with higher compression and a good 76mm from precision would do it. gt47-88 is more than enough i made 826 whp uncorrected at 5400 ft of elevation with 13 psi.

98Z28CobraKiller

iTrader: (17)

You're going to need a Level 9 atleast. LOL. But seriously, sell it and get as much as you can for it before you hurt it. The good news is that you should be able to get enough out of it and the converter to buy a good th400 with reverse manual v-body and tbrake w/ converter and everything that you need to put it in. Also, not having overdrive isn't a big deal as you will be able to run a 3.00-3.20 rear gear at those power levels.

My 370 with the pt88 gets me into the 8's at 3800# race weight. Mighty Mouse was deep in the 8's with his and Fireballs 370 went 8.0's IIRC but with a bigger turbo. The point being that you dont need lots of cubes to go fast. I believe that I could benefit from a larger exhaust housing so the PT88/91 is right on the line for a 370 IMO but it seems to be the best compromise of frame size/power ratio. It's weird because these turbos have been around for 10+ yrs I think. The one on my car was originally built in 2001. You'd think someone would have knocked it off it's high horse. Like Sean said, in comparison, the GT47/88 is huge. Seems like the break point is right around the 80mm mark for midframe to large frame housings.

eviltwin_1987

iTrader: (18)

you cant get much bigger than a pt88 in there.



i do still have my a/c stuff though. fitting a good downpipe in there is the hardest part

elias_799

iTrader: (8)

get a 4l80e

96TurboLSX

iTrader: (2)

Take out the heater box, if you dont use heat. I did in my lt1 s10 and it made for alot more room.

turbo_v8_s10

iTrader: (9)

what power would the 4l80e hold

turbo_v8_s10

iTrader: (9)

What turbo's would work for twins on the 403?

Shawn @ VA Speed

iTrader: (3)

i've seen well over 1500

Shawn @ VA Speed

iTrader: (3)

we've used twin Precision 58's for ones that didn't have much room.Will easily make 900+rwhp