Fastest Silverado

[oleshifty]

the 5.3 HO crate motors are puttin like 350 at the fly with a edelbrock intake/holley carb...

I would think cam/heads/ud/headers/good tune should be able to put 400 at wheels no problem if done right. Can't imagine THAT much is lost through drivetrain

[phantom405]

Stock truck intake, 11.5:1, p&p heads, 236/240 .615/.615 112lsa, lt's, dual 3" exhaust made 398rwhp on my truck through a very loose 3800-4000 converter.

Cam only with long tubes and 2.5" duals I made 350rwhp with a 221/221 .567 112lsa with stock verter.

400 is doable but you're gonna spend some money gettin there

[ss454327]

I've got some family in Bastrop and surrounding areas that drag race. The 5.3 is plenty tough and can be bored out to 3.90" so I'd shoot for that with a 4" stroker crank for a 383 LSX. 400hp should be a walk in the park...

[11 6.2]

Not tryin to steer u away from the 5.3 but why not get a 6.0 and make it alot easier on yourself and the motor?

[mrvoltz29]

ya i agree with the 6.0 325 hp stock so a few bolt ons will get u there in no time

[r.barn]

swap out some flat top 4.8 pistons,
find set of used 243 heads and have them milled a little
healthy cam
long tubes and full exhaust

be cheapest way to get most N/A power. ... IMO

[02gmcbandit]

i wanna see how much i can make the 5.3 put to the wheels without boring and without any power adders. yes a 6.0 would be a quick way there and i may do that, i have a 2500 that i could do a motor swap in and have a 6.0 IF i ever decide to go that rough. my tuner has a 6.0 in a reg cab making 380/380 to the wheels (his "work" truck) has ls6 intake, 220/220 cam,LT's, K&N intake, Efans ,and tuned . we'll see how things go, i MAY go with a bigger cam but for now i wanna try this one. thanks for all the input tho lots of good ideas

[vv8]

I only made 330 to the wheels but ran 12.3 with a 5.3 in a rcsb.