Gains from ported AFR225 heads & 3" Catback on single turbo 347ci
02-14-2012, 04:44 PM
#1
Gains from ported AFR225 heads & 3" Catback on single turbo 347ci What's guys!! 
As some of you know I dynoed my car a couple of months back with my custom single ST80 turbo setup...
https://ls1tech.com/forums/forced-in...ber-10psi.html
With stock 241 untouched heads and stock TI catback
10psi made 585-595rwhp 545-550rwtq with conservitve tune...
after that the 5 years old 347ci short block gave up (oil press dropped and slight knocking noise 3000-3500rpm) I'll rebuild it for another project
So I found another 347ci short block 9:1 build by Kurt Urban with ported AFR225 heads , keeping Brute Speed cam , LS6 Intake, ported TB for now and also bought XSPower 3'inch awesome catback....
My questions is how much do you think the car will gain with the same boost level after the heads and catback? Keep in mind I had 242 heads and stock catback...
Of course after that I'll be turning up the boost 20+psi to see the limit of the ST80 83mm turbine 1.15AR
Thanks
Sam..
As some of you know I dynoed my car a couple of months back with my custom single ST80 turbo setup...
https://ls1tech.com/forums/forced-in...ber-10psi.html
With stock 241 untouched heads and stock TI catback
10psi made 585-595rwhp 545-550rwtq with conservitve tune...
after that the 5 years old 347ci short block gave up (oil press dropped and slight knocking noise 3000-3500rpm) I'll rebuild it for another project
So I found another 347ci short block 9:1 build by Kurt Urban with ported AFR225 heads , keeping Brute Speed cam , LS6 Intake, ported TB for now and also bought XSPower 3'inch awesome catback....
My questions is how much do you think the car will gain with the same boost level after the heads and catback? Keep in mind I had 242 heads and stock catback...
Of course after that I'll be turning up the boost 20+psi to see the limit of the ST80 83mm turbine 1.15AR
Thanks
Sam..
