Silverado 100 Horsepower Performance gain on a budget

[yellowdemon327]

hopefully my budget will soon allow me to do the same

[TXsilverado]

or you can gain 150-200 hp for a little over 400

[ff_jeff]

ssssssssspray

[Botlfed]

Nice article man but i was just wondering, where this nelson performance is located, and if i should change the lifters and rockers also.

[RedHeartbeat]

SanAntonio... Nelson Performance - Performance without Sacrificing Drivability

The lifters are roller types and unless you have over 100k on the lifters, leave them in. Rockers should be fine but if over 100k replace them too, they're cheap. BTW, to change lifters on a Gen3 engine you have to pull the heads.

[Botlfed]

Thanks man.

volant ram air intake, hyperpac programming system, x pipe dumped, richmond posi w/4:10.1.

[HotRodV6]

this article has my head spinning wanting to do this to my 2003 Silverado that i bought a week ago.

Its a 5.3L and for a stock ext cab she runs pretty good, over 80 when it shifts out of 2nd gear, but there is always room for more.

Im, gonna cut off the stock muffler and weld in a 2.5 in/out Dynomax Ultra flow welded muffler i have new in the box in the garage, and get the volant CAI, but first i want to have the truck dynoed bone stock to see where im starting. I also bought a stock 07 rad and efan setup im gonna swap in to ditch the stock clutch fan setup, along with a 170 deg t-stat.

Hey Allen,

Quick question for you, on a completely bone stock 03 5.3, what kind of power can be had with just the tune? Also how much better can you get the MPG with just a tune and a few small bolt on mods, like i have listed above?

Thanks

[86 Silverado LS1]

I knew I really need to get my truck tuned when I went to the track this past weekend, and ran only a few tenths faster than a fully stock, 5.3L-powered RCSB (a buddy's stepside p-up). Once I fix the trans, I'll re-evaluate my loose cash, and move the priority up for a tune.

How many times have you had trans troubles? Thats gotta be getting old. Heavy foot???

[HotRodV6]

what is the LSA on the stage 2 cam kit? I see the dur is 220/220 and .588/.588 lift, im looking at the MTI Stealth Cam with very similair specs, 220/220 .581.581 and 115 LSA and wanted to see how it compares.

[farmtruc]

this...with a 170 deg t-stat.

Hey Allen,

Quick question for you, on a completely bone stock 03 5.3, what kind of power can be had with just the tune? Also how much better can you get the MPG with just a tune and a few small bolt on mods, like i have listed above?

Thanks

We've seen as low as 22hp to the wheels and as high as 33hp to the wheels. Sure, making the engine run more efficiently will increase power and drivability.

what is the LSA on the stage 2 cam kit? I see the dur is 220/220 and .588/.588 lift, im looking at the MTI Stealth Cam with very similair specs, 220/220 .581.581 and 115 LSA and wanted to see how it compares.

I believe it was a 114 or a 112, but I'm sure it's a 114