Whats Next for my truck???

[blackout]

Well after finally getting my tune dialed in on the truck Im not as impressed as I would like to be.

So...

I want to discuss options for my next step.

Current Set-up:

Forged 383 ci Stroker
10.5:1 CR
Flat-top pistons
243 heads
TBSS intake and 90mm TB
220/220 .556/.556 114 LSA
44lb/hr injectors and single 255 lph in tank walbro

4L65E
4wd
Circle D 3000-3200 stall
3.73 gears

Route 1- N/A

Bigger custom spec'ed cam
Same intake manifold or probably switch to LSXRT
Bigger headers (ARH 1 7/8 probably)
Retain my current fuel system

Goal: ~400 rwhp/tq

Route 2 - Boost on current set-up

Trick Front Mount (stage 4 kit) 76mm turbo
Most likely retain current fuel system

Goal: ~480-500 rwhp/tq

Route 3- Boost on current motor with boost cam

Trick Front Mount (stage 4 kit) 76mm turbo
Custom Spec'ed boost cam
Probably bigger fuel system

Goal: ~530 rwhp/tq

Route 4- Boost with dished pistons and boost cam

Trick Front Mount (stage 4 kit) 76mm turbo
Dished pistons to lower CR
ARP Head bolts
Cometic Gaskets
Custom Spec'ed boost cam
Most Likely bigger fuel system

Goal: ~580+ rwhp/tq

Obviously these go in order from least expensive with smaller gains to more expensive with bigger gains. I would like to do a turbo set-up but tearing my motor down to put different pistons in it is going to be a lot more money than leaving the pistons alone. I would be perfectly happy with a N/A set-up probably closer to the 400 mark but dont want to spend the money if the gains I want aren't there. I would also be happy with a turbo on my current set-up or with a boost cam but not sure if its worth it because of my higher CR. Drivetrain mods will come as components fail.

Discuss and help me decide.

[bangbangskeetskeet]

Why not just boost on the 10.5:1 cr? Or ifthe compression is such a big deal, don't swap pistons...swap heads. I think that you're so disappointed with your current set up is the cam. That cam normally goes well in smaller motors...people see great results in 4.8's and it's a staple in 5.3's. IMO if you wanna spend the least amount of money get a bigger cam.

[blackout]

Why not just boost on the 10.5:1 cr? Or ifthe compression is such a big deal, don't swap pistons...swap heads. I think that you're so disappointed with your current set up is the cam. That cam normally goes well in smaller motors...people see great results in 4.8's and it's a staple in 5.3's. IMO if you wanna spend the least amount of money get a bigger cam.

What kinda PSI could I boost with that CR? and if I wanted to go with a bigger N/A set-up you think I could hit around 400 with a bigger cam, intake, headers?

P.S. - current set-up put down 315/347 rwhp/tq (graph is under dynodata)

[ThumpinZ]

Iron block right? You can boost alot better with iron, even with the 10.5.1. I mean 8 pounds makes a huge difference. Bigger cam imo though, might not reach 400 with just the cam but there is always some wiggle room and you've already got a converter to back it up.

[blackout]

How much power am I leaving on the table if I did the the stage 4 kit without changing cams?

[beingblueeyes]

Can you give more info on the "Flat-top pistons" your using like what there made out of (forged/ Hypereutectic/OEM)?

[blackout]

Got final cam specs 226/230 112lsa. Should sound pretty good too. I'm stoked to get this thing running for summer!

[o2camaross]

man, your numbers are way low for a 383. pat g spec'd me a 226/230 on a 111 lsa for my 5.3, but ill prolly go a little bigger. Im trying for close to 400rwhp with h/c/i. If it was me, I would go with a bigger cam but my truck is lighter i guess. I dont see why you should have any problem what so ever making 400 rwhp with a 383. Just make sure you get it right, and Im sure you will be satisfied. If you make 400 after the build and its still not enough, spray that bad boy, Iron block, forged pistons and high compression sounds perfect for a 200 shot!!

[blackout]

man, your numbers are way low for a 383. pat g spec'd me a 226/230 on a 111 lsa for my 5.3, but ill prolly go a little bigger. Im trying for close to 400rwhp with h/c/i. If it was me, I would go with a bigger cam but my truck is lighter i guess. I dont see why you should have any problem what so ever making 400 rwhp with a 383. Just make sure you get it right, and Im sure you will be satisfied. If you make 400 after the build and its still not enough, spray that bad boy, Iron block, forged pistons and high compression sounds perfect for a 200 shot!!

my thoughts exactly about nitrous!

[Bigschwerm]

See you are from Seattle....You go out to Pacific Raceway any with your truck? I went last weekend ....They had a great turnout but I was the only GM truck there. Hope to see you out there!