4.3 turbo question

[theperfectsin]

I have access to all parts to do a turbo setup on my truck. I have a 4.3L 2000 s10 sfi motor with 120k on it. What i am wondering is it worth putting 5psi of boost on the motor, will it be worth all the work?

[theperfectsin]

I forgot to mension the turbo is off a stock regal t-type

[rentedmule]

I'd say it would be worth it - you're looking at easily 50+ hp if you set it up and fuel it correctly. If the motor's in good shape and you can get enough fuel to it it'll easily handle 10 psi - some guys have even pushed 20 psi on a stock 4.3 for a while with exception tuning. It's all about the tune though, you can kill it with just a few psi if you screw up the tune.

I don't know a whole lot about turbos yet but I'm guessing the stock T-type unit would be a bit on the small side. Fine for low boost but you'll quickly reach it's limit if you start pushing it.

[theperfectsin]

i was planning on using a fmu to increase fuel pressure per psi of boost and monitor it with a wideband it works exceptional on imports and have seen it done in a few v8s but i know if i wanna increase boost i would have to find a way to get it tuned. the t type is a 3.8l if im not mistaken it should satisfy the 4.3 at low boost

[theperfectsin]

but 50hp at 5 or 6 psi seems like a lot what numbers are the supercharged guys running at that same boost

[rentedmule]

At 6-7 psi most guys get between 65-75 hp with a S/C and proper fuelling. I say a minimum of 50 hp with a turbo @ 5 psi but it would likely be more. You don't have to waste power turning the headunit with a turbo - turbos generally see more power at the same psi than S/C's, especially with the low end S/C's available for the 4.3.

[rentedmule]

do you mean if you're not so budget minded?

[rentedmule]

agreed - just wanted to make it clear that an FMU was much cheaper

[UR50SLO]

The stock GN/T-Type turbo flows 550cfm and will support 350hp.
It's bigger than the Mitzu turbo that came stock on the Sy/Ty's.

A FMU is a great way to order a new engine. Please don't use one!

The stock manifold and injectors will handle under 10psi fine.

You'll need HPTuners to change your Fuel and timing. You'll need a wideband O2 also.

The Marine intake is a great peice that is cheap on e-bay.

See my full article and info on www.fullthrottlev6.com (http://www.fullthrottlev6.com) under 4.3L tech stickys.
~Scott

[87wildside]

Cleaned up. Lets keep it on topic.