Photochop

iTrader: (74)

Nice numbers, that graph looks familiar to mine with the M6. 346", T70, 14psi. It was fun with a 6 speed, but now its a blast with an auto behind it!

http://i18.photobucket.com/albums/b1...0TA/M6dyno.jpg

KILLER-LS1

iTrader: (18)

What size housing do you have??

Johnv

383 ci and 1.32ar housing

KILLER-LS1

iTrader: (18)

holy crap, I find that kinda hard to believe that it spools the same as your .96 housing....

Photochop

iTrader: (74)

The 383 cubic inches helps. You could get away with the same A/R, Killer-ls1.

TurboS10

iTrader: (12)

your small housing is choking it. Bigger housing makes more power which means more flow through the motor which means faster spool.
Small turbine small a/r is making the motor work harder to get the exhaust gas out.
Guys are running T76 w/ 75mm turbines w/.96 housings and having BP issues at 5k on 35x cid and 18psi.
383 T6 1.1 87mm turbine w/80mm compressor are starting to spool at 3k and going 142 at 4400lbs. The extra 2mm on the compressor isn't that much more air compared to your turbo. The extra 2 mm plus the bigger compressor housing and the 19mm bigger turbine is. Will a 78HPS fit your current hotside?

I'd be really curious to see how my 80mm works on your motor. But I can't help test fit it till about January. I have to move and work major OT till mid december. It's 80mmBB w/79mm turbine and divided 1.15 T4.
The latest Engine Masters has the same turbo on a 43x Ford and made 1100 fwhp at 12psi. I'd imagine it has an 87mm turbine at least.

Johnv

I'm telling you , it easily spools just as fast and doesn't run out of steam
up top.

In fact I just made a 3 1/2 " downpipe from the turbo and now it would easily outspool the .96ar housing with a 3" downpipe, (exhaust is single 3 1/2")

with your cubes I'd be tracking down the biggest ar exhaust housing i could find.

Island Grown

iTrader: (6)

hey OP, kinda off topic, but what shop did you dyno at? looks familiar.

speedfreak391

iTrader: (2)

I can only hope to have the same kind of results. Great power, and a great looking car. What turbo do you think would be best fitted to a stock bottom ended 5.3 w/ls6 intake and a mtis1 cam 612/612 244dur 114lsa. Or is this cam to much for a turbo?

TurboS10

iTrader: (12)

spare 1.15 for sale
https://ls1tech.com/forums/13758337-post1.html

TurboS10

iTrader: (12)

Do you want to shift at 7500?