cpolaris502

iTrader: (1)

I'm getting ready to buy a turbo soon, I just ordered the turbo manifold from Trick so I'm getting pretty pumped.

My power goal is 700+ whp. I'm looking to go with a Precision because I've got a friend that has a hookup on them and can get them just over cost. From what I've researched so far, I'll be looking for something around 84mm, but what A/R. etc?

It's a street driven truck, not daily. Forged 402, 9.1 cr, 224/228/112 cam, 4l80e (to be installed) and 3,200 Circle D converter.

How important is it to choose exactly the right one? I like to make the right decision the first time

cpolaris502

iTrader: (1)

Looking at the site, it seems like one of these two may be good for me? They don't really have a lot of details about them, at least on the product page.

7275 rated at 985 hp- http://www.precisionturbo.net/turboc...ger---7275/275

7475 rated at 1,060 hp- http://www.precisionturbo.net/turboc...ger---7475/276

What makes these "entry level"? The fact that they are not ball bearing?

Maybe this one too from the street and race section, PT6766- http://www.precisionturbo.net/Street...-CEA%C2%AE/480

.96 A/R would probably be good.

TrickTurbo

iTrader: (12)

Entry uses cast wheels. Old technology stuff. Those power numbers are at the crank and very hi boost.
402 with the 74/75 will fall flat in the upper rpms.

I would rather see a larger exhaust side.

cpolaris502

iTrader: (1)

That makes sense about high boost, they're basically saying that is the maximum it could make.

Am I just too much of a noob, or is Precision's site lacking information that I might want to see?

Which one would you point me towards?

TimDave217

iTrader: (4)

Pt7675 atleast. I'd say do a 88mm but thats just my .02¢

oakley6575

iTrader: (5)

I would also do the 88 if it was going on a 402ci engine. I wouldn't put anything smaller than an 80 on that big of an engine.

cpolaris502

iTrader: (1)

Thanks. That kind of confirms my idea of the size I would need. It's all the other specs that I have trouble with right now. I am planning to get some in-person advice at Modern Automotive Performance on Friday here in MN. I just got my Trick manifold today. Once I have a turbo, it's all small(er) purchases after that.

cpolaris502

iTrader: (1)

Update
Out of the two companies I have gotten advice from, Modern Automotive Performance and Defined Performance, each recommended a PT7675. $1,360 was my best quoted price on it. Going to look at a few other options to compare prices and see what's comparable.

07 Z71

iTrader: (44)

With that big *** motors i would do a pt88
I run a 7675 on my 6.0 with no problem and it spools up fast

M&M Turbochargers

i would look at something with atleast a 80mm compressor ind