NA vs. FI (400whp)
01-10-2009, 03:04 PM
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NA vs. FI (400whp)
I am wondering what bolt on mods could be done to gain around 400hp. And a rough cost including labour. Is it cheaper and more reliable to go Naturally Aspirated (sp) or Forced Induction?
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01-10-2009, 04:57 PM
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It's doable with the 5.3L but will take $$$ and some good parts. Being that you are a
2WD helps but these trucks absorb quite alot of drivetrain parasitic loss compared to GM cars like the Fbody's C5-6, etc.... I made 420rwhp easy in my LS1 with a small cam and relatively cheap heads.
With the 5.3 you will need a very good set of heads, AFR 205s, TFS 215's, etc, 11.0-1+ SCR, cam in the 230+ duration range. This along with LTs, ASP pulley, ported TB, intake and exhaust with tuning would put you damn near 400rwhp.
Or spend the money on a blower for an easy 400rwhp.
2WD helps but these trucks absorb quite alot of drivetrain parasitic loss compared to GM cars like the Fbody's C5-6, etc.... I made 420rwhp easy in my LS1 with a small cam and relatively cheap heads.
With the 5.3 you will need a very good set of heads, AFR 205s, TFS 215's, etc, 11.0-1+ SCR, cam in the 230+ duration range. This along with LTs, ASP pulley, ported TB, intake and exhaust with tuning would put you damn near 400rwhp.
Or spend the money on a blower for an easy 400rwhp.
01-10-2009, 05:49 PM
#4
im shooting for 400rwhp na also, with the mods in my sig i am putting a little over 300 to the wheels right now. i am planning on buying some tsp stage 2.5 5.3L heads, a custom grind 224 cam and ud pulley. with more tuning what should this put me at?
not trying to thread jack but it looks like we both have the same goal....
not trying to thread jack but it looks like we both have the same goal....
