thats exactly what i was looking at.. tec is about 30 minutes up the street from me, jason is a good dude, might see what he can do one for.
the car is a 66 falcon drag car, but, we street drive it too. the compression motor is getting to be a drag tho. either gonna do a pump gas or e85 deal. have to get e85 in drums here, closest station is 3 hours away.. currently it spins about 7k

 

Whats the rest of your combo? A 393 with decent heads @ 7000 rpm is going to need a good size turbine. What about twin t4's in the 60mm range? Would give you adjustability as far as a/r, and easily upgradable.

 

Hmmm... Wonder how bad a GT45 would outperform a Master Power T70???

 

On what?

 

it is 395", tfs t.w. with a full cnc job, 315 cfm int/ 230 exh, super vic, solid roller , 825 demon, currently 12.7:1...

 

No comparison. The t70 is great for a 300ci motor and if the Gt45 has a 76mm compressor and 88/77 wheels, it is better on both ends. It will still be on the small side though for a 395 like that.

 

the gt45 would be fine for the 306 me thinks..

 

4.8/5.3, small cam, stock compression(9.5:1) in my '01 Silverado with a 3600 converter and 4.10's.

 

denmah is doing (done? no times yet, though) a T76->GT45 swap on their 4.8 truck. Follow along, should be neat to see if the smaller compressor slows it down more than the big turbine speeds it up...
https://www.theturboforums.com/smf/the-turbo-%27builds%27-board/2010-base-4-8-truck-2wd-mpt76q-trim-**now-with-500whp**/msg1545990/#msg1545990