Looking for 70mm on3 turbo advice on my build if you can help.
Iron billet 6.0 317 heads 9.8 comp. Intercooler and meth inj, pump gas.4l80 (no stall yet) 4:11 gear 28 tall tire in a 68 c10.
For the street looking for 8 to 1000 rwhp, will the 70mm turbos be a turd down low ? Thank you for any advice.

Gotta say im very impressed with your car. 69' Chevelle's have always been my favorite.
I have a few questions, how did your old 5.3 work with the 224/230 cam?
did you have plenty of low end to mid range power? was that cam on a 112 or 114 lsa?
The cam i have now is a little on the large side, but when it finally turns on, its ridiculous! just tired of the loss of lower end power.

I haven't had a chance to check it out yet. Should have it up and running where I can drive it by next week. Just put in a new trans. I will post videos of how well it does. It should have awesome low end. It is a 1500rpm starting point!

Hey I was checking out your build and I have a really similar setup, did you end up liking the edelbrock pro flo intake?? I just decided to go that route with my turbo but I was hoping I didnt lose any bottom end torque with the heavy chevelle.