Im looking into losing the vortech soon for a turbo but was curious as to what you guys thought about these two turbos I can get my hands on. Motor is stock for now and doing a bottom end at the beginning of next year. All the supporting mods and a 4.30 gear in the car now.

The first turbo I was looking at was the MP T76 T4 P-trim .96 A/R. Will support more than enough power then Im wanting to make right now but still has room to increase the boost and not have much lag or over kill.

The other is a BW S400 78mm T6 v-band exhaust and compression housing, coated wheels. A friend of mine who will be fabing the kit for me has this but it seems a but too much then what I would need. Not to mention it would have more lag then the MP T76.

For now Im still running a stock T45 with a Spec2 and holds great with the vortech and 4.30. Im gonna get a pair of forks and a beefier clutch and go from there. Sticking with the 42# injectors and 255 intake pump and shooting to make 450-475rwhp on the new turbo setup on the stock motor then 550-575rwhp after the low compression bottom end.

So should I stick with the T76 as I planned or get the T78 and have more room to work with? Or will it be more than I need?

 

What are you looking to do with the car? Street or drag? I'll tell you the T-6 will be a pig on the street. You'll have to spin the motor pretty hard. Only reason I got rid of the MP t-4 76 was because my car is going to be a track only car, it will never see the street

If your looking to have boost similar to the supercharger, stay with the T4 all the way

 

for that power think of doing a t-68 or a t-72. great spool and great power easy 600whp

 

t-4 76 is good to 750

 

Which turbine housing?......play a major role on spool

 

part# PT-67 67mm ....Wheel Inducer 2.620"....Wheel Exducer 3.310".......Wheel Trim 63... inlet/outlet 4" / 3"..... A/R Ratio On Center .69 or .85... wheel style P-trim....Wheel Inducer 3.110".....Wheel Exducer2.695".....Wheel Trim 70 ......... this is the turbo i would use on my car.. its a street car , this is a basic turbo. its smaller then most people think of using ..they say its 700whp capable. keep in mind a 4.6 is a 281.

 

I would think (granted im no turbo expert) that you're combo would make more than what you're shooting for with the mp76. Unless you're talking bout moderate boost levels, such as 8-11psi. Just curious.

 

Stay with the smaller more efficent turbo.Stick shifted stock motor,a bigger turbo will be a waste unless your planning on running higher boost levals.

 

EXACTLY!

you have a stockish 281 cid engine, 5-spd street car. I'd say a 71mm with an exhaust no bigger than .96 should be plenty

 

Whiskey Tango Foxtrot over?


The belt pissed you off that bad? lol.