Non-turbo 428rwhp FD build up and history by GtoRx7

By diyauto
( 5 )

2 minute(s) of a 68 minute read

3-13-2011

Different strokes for different folks  



So here are some charts from the dyno. I will post much more detailed runs in a new thread, for all the techno geeks like me  


The peak runs of the day, 435.8 rwhp and 251.8 rwtq. This is the same setup, just with smoothed p-port manifold. Now its time to rip it all off and put on the new slide throttles! Once I get it built that is. lol. 




And here is a real result that was unexpected. 350 rwhp, and 240rwtq on totally stock intake (2" removed from lower, as per our 20b conversion kit) and streeport only. If you guys are not sold on shortening the stock intake, hopefully you are by now.




And here is the run of streetport only vs. Semi p-port. On the streetport run the p-ports were capped off at the flange just like I had done for so many years. As you can see, torque really doesnt suffer much down low. 





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