no sir built block. now i have a built head and never dyno yet.

Dude your dyno said you got 427WHP & 402TRQ at 20psi was that on stock internals?

Wiseco pistons, k1 rods, arp main and head studs and cometic head gasket is what I have and yes I did remove the balance shaft. Oh and clevite bearings.

What kind of internals do you have? Did u remove your ballance shafts

Sounds good

Thanks for the info there. Ill stick with 2.5 for now as i will probably make at most of 350 on my small precision 5031E turbo. till next year then i guess ill change it up with a 3 with bigger turbo and better clutch.

I'm pushing 20psi. But I was pushing the limits of that 2.5 that's why I changed to 3" and made a huge difference. Before On 17 psi I a most had the same amount of power. So I raise it to 20psi and only got like 20whp out of that which if before i would have had 3" piping I would have made more. But now I changed it to 3" and I know I am well over 426whp.

Hey man what size exhaust piping are you running to push all that power? Im wondering if i could get away with keeping my 2.5 full exhaust to achieve similar numbers.

anything bigger then a 60trim turbo will get your passed 400whp and i say plus 18psi. you never know. all depends on your tuner also. and with 750cc you will be pushing it. get like me and get 875cc injectors i think there only 230 shipped. i got mines from http://www.bmotorsports.com/shop/pro...oducts_id/1589
only reason why i got these is cause i have the EV1 clips which rc injectors use also plus there saturated injectors which we need unless you have standalone.

The reason I ask is because I am trying to get away with NOT having to run a return line. If there is some way for me to break 400whp without meth I'd really like to do it. I want to get RC 750's and a bigger turbo and go for 400whp, but I don't know what turbo to use and if I can get away with it without a return system....any thoughts?