i can get a really good deal on this but if it wont give me a good setup il have to let it go , i think the .68 will make it spool in way to fast. but i know little about this so ill let yall decide. yay or nay.


this is MPt70 p trim

Compressor:
-A/R .70
-Air inlet 101.7
-Air outlet 64.0
-Inducer wheel 69.1
-Exducer wheel 91.0
-Trim 58

Turbine:
-A/R .68
-Inlet T4
-Turbine housing undivided
-Discharge outlet V-Band
-Exducer wheel 64.5
-Inducer wheel 74.0
-Trim 76

 

.68 will choke up very early on a 376. it will be a torque setup. a local 6.1 litre with a 76mm using a .81 AR choked real early. nose drived at 5500. HP fell off , on 15 psi it only did 525rwhp and 650 rwtq. thats with ported 243s, ls2 intake, turbo cam, professionally tuned by VA speed.

so a 70mm with a .68 will be worse, if you can get say an housing in the 1.0 range it will help some

my turbo on your motor size will easily make 900 or mor in the right hands. Lil Sis ran high 9s on a 6.1 and stock48 ran mid 9s on a 6.1 with same turbo

 

i had that turbo on my 6l, hated it, hard to tune. Bought mp's larger .81? exhaust housing and it was great. installed a garrett 1.32 housing and it was even better! The mpt70 turbo works great, just get a bigger exhaust housing.