I have a teksid block .020 over, diamond pistons 11cc .004ptw clearance/ 22-20ring gaps, 03 cobra rods resized with arp2000 rod bolts, arp main studs, arp head studs, felpro gaskets (from modular performance not sure of part number), 03 heads (ported), 98 cams, comp springs. Just curious what kind of power this thing can handle...My current set up has a master power t76q trim on it and it's only been pushed to 14psi and it runs hard there, but just curious. I'm sure it will take more than this turbo can take, but I plan to upgrade next year to most likely a pt47-88 or S380r and push on it some more. Let me know what you guys think this shortblock can take and if you have an opinion on a good upgrade for a master power 76 throw that out there too, but I'm limited to t4 flange.

 

Are set ups are close..How much hp-torque at 14 psi?

 

Are you running stock valves and springs.?

 

Haven't had it on the dyno yet... Stock valves with 5 angle and comp springs and retainers

 

the short block shoul be good up to 1100rwhp

 

That MP76Q turbocharger can handle higher boost levels, if that is what your concerned with. I wouldn't think twice about running it at 20-25psi if that is where it makes power ( efficiently). This is coming from personal experience, btw.

Being limited to the T4 flange, the PT88-47 would drop in, with a new downpipe ( 4").
But at that point, why not modify the crossover to fit the turbo you want to run, rather then what will fit on the current flange/flange placement.

 

I already have a 4" downpipe (3"-4" transition) so I'd onli have to modify a small section of the downpipe. I want to run 20psi with pump gas and meth this year which this turbo should be able to do. I'd like to run 25+ next year but not sure what turbo would be best

 

Would a pt4788 not be the best choice?

 

Assuming an adequate fuel system and if my motor is even good to 950-1000rwhp(?) what turbo would be best for a street/strip car? S480,s380, pt4788, gt4780, etc. No need to get something too big that my motor can't push. I'm gonna start watching for good deals to pop up, just want to know what my best options would be. 99ttgt have you pushed 1100rwhp with a similar motor set up? What do you suggest?