I was thinking about trading my truck in for an 05' but I would like to explore some engine upgrades on my 00' first.

Here are 3 engine combos I was thinking of. I am looking at spending 6-7K.

Please give me ball park figures of HP & TQ numbers for each of the options.



1. stock 5.3L with STS kit, upgaded turbo, and intercooler running max PSI (8-9psi?) on 93 octane.

2. stock 5.3L with intercooled radix, long tube headers, and 3" mandrel bent cat-back.

3. 6.0 (LQ9), dynotech LT headers and HF cats, 3" MB cat-back, K&N intake,
80mm throttle body, mild cam, heads milled to raise CR to 10.8-11.0, 93 oct tune.


=Dave

 

# 1

 

with there #3 there is way more horsepower to get down the road

 

So from a stock 5.3 to a stock 6.0 LQ9 how much RWHP will you gain?

 

You are absolutely correct, but that's what I want to avoid, down the road $$$$. I want one of these combos and I want to stick to it.


=Dave

 

I dont now RWHP, but the 5.3 (LM7) is rated at 285 HP and the 6.0 (LQ9) at 345HP from the factory. Which is 60 HP gain or 21% HP increase.


=Dave

 

go with the inches, more hp, less stress on the motor to get there...my .02

 

How about an LQ4 with a Radix?

 

Trying to stay under $7K.

=Dave

 

My stock LQ9 with a tune and intake mods dyno'd at 297HP and 317 ft/lbs. Other guys have gotten a little more out of theirs.