Havnt posted in a while. So I went back to the dyno with a built head and a new block. With the precision 5431 .63 AR I was able to put down 358WHP and 271 WTQ on 19PSI. Started over heating on the last pull, top radiator hose had a hole in it but it wasnt bad enough to leak. Completely blew up as I was close to home. But im pretty happy with the results, new hoses should be here today. Hopein to run a low 12 with those numbers and trap around 120 MPH

 

i ran mid 12's on a t3 super 60 with 250/238tq in full trim..

you should be able to do better then that ( if you have traction)

 

My only pertinent piece of advice here has to do with service. Having dealt with Turbonetics for over 15 years and Precision for about 12, Turbonetics' service has left much to be desired while Precision has rarely disappointed. Having said that, Garrett has also been a big winner in my book. Not many people think about the service a turbo manufacturer has to offer but with a part that spins at 100K+ rpm, that should be a primary concern.

 

Well im at appx 2700 FT above sea level. The tune was done at 300 ft so I know I lost some speed. But I would be happy with 12s as my DD