Nice numbers

 

Great numbers! Very impressive for a 5.3!! Makes me want to change camshaft, install the UD, and throw a FAST on mine. Congrats!!

As for the dynoing in 3rd question....you run the risk of trashing a driveshaft. Dyno it in 2nd to be safe.

 

My 4.8 put down 294rwhp and 265tq lol it's cam stall and geared obx long tubes eBay 3" intake and Wheatley tuned

 

Congratulations!

 

So what are the PRC 2.5 5.3 Heads, are they basicly ported 243 heads?

Thanks.

 

They're ported 706 or 853 heads.

The stage 1, 2, 2.5, and 3 LS6 heads are ported 243's or 799's

 

nice numbers!

any other N/A 5.3s around 400rwhp?