TSP's 421ci 6.9 LQ9. Patrick G tuned 547whp 527wtq...
05-15-2013, 01:10 PM
#21
Launching!
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These numbers through Pacesh*tters WOW!
You are right there is a LOT of good power everywhere left in this combo just from porting your Fast, going to Kooks or ARH 1-7/8s, and running SD.
My old setup with PRC parts went from 472/471 to 505/478 just by switching to Kooks 1-7/8 and porting my Fast. (heads also got milled down .030" but let's not split hairs).
My entire torque curve improved drastically due to the Kooks, and drivability down low improved substantially.
Also your combo impresses me because the 2.12" valves on those heads are gigantic and you are only working with 4.030" of bore. Those numbers prove the shrouding of the intake valves is not as bad as with LS3 heads and their 2.165" valves.
Keep us posted, and props for acknowledging your woman in this thread. Mine wouldn't still be in the picture after 4 years if she didn't have incredible patience for car parts and garage hogging...
You are right there is a LOT of good power everywhere left in this combo just from porting your Fast, going to Kooks or ARH 1-7/8s, and running SD.
My old setup with PRC parts went from 472/471 to 505/478 just by switching to Kooks 1-7/8 and porting my Fast. (heads also got milled down .030" but let's not split hairs).
My entire torque curve improved drastically due to the Kooks, and drivability down low improved substantially.
Also your combo impresses me because the 2.12" valves on those heads are gigantic and you are only working with 4.030" of bore. Those numbers prove the shrouding of the intake valves is not as bad as with LS3 heads and their 2.165" valves.
Keep us posted, and props for acknowledging your woman in this thread. Mine wouldn't still be in the picture after 4 years if she didn't have incredible patience for car parts and garage hogging...
