Wanting to know more about 383s

[94_Z71]

The stock Vortec injection can only support a little over 400 horses. So I built my 383 for 450 HP. It's fine as a daily driver, but my city mileage went down from close to 15 MPG to a little under 13 MPG. If you keep your foot off the pedal. And that's with stock-sized tires.

 

[Kyle89]

Would a COMPLETE STAND ALONE 6.0 harness already set up all sensors everything minus catalytic converters even includes a unlocked pcm be a good deal for 1800 bucks?

 

[RDF1]

Would a COMPLETE STAND ALONE 6.0 harness already set up all sensors everything minus catalytic converters even includes a unlocked pcm be a good deal for 1800 bucks?

Just the harness and pcm for 1800?

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[RDF1]

What about running a lq4 with a air to air inter cooler? I should be able to run 15psi of boost with 91+ Oct and it seems more practical considering I would have to wait to spoil and looks a lot easier to install and tune myself

Depends on the size and quality of the intercooler..
We ran 16-17# on a cam 5.3 for 7 years on 93 octane.
It's all in the tune and gas to keep one alive.

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[Kyle89]

Just the harness and pcm for 1800?

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No the entire setup including the 6.0

 

[Kyle89]

Depends on the size and quality of the intercooler..
We ran 16-17# on a cam 5.3 for 7 years on 93 octane.
It's all in the tune and gas to keep one alive.

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I understand that and luckily premium ist even 3 bucks a gallon here yet anyway I'll run the premium with the boosted setup rather I go with 5.3 or 6.0 ... the place I found the 6.0 turnkey drop it in and hook it up for stand alone also has 5.3s for 1200 or 1400 and 4.8s for not much less

 

[RDF1]

No the entire setup including the 6.0

That's not terrible if it has decent miles.

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[RDF1]

I understand that and luckily premium ist even 3 bucks a gallon here yet anyway I'll run the premium with the boosted setup rather I go with 5.3 or 6.0 ... the place I found the 6.0 turnkey drop it in and hook it up for stand alone also has 5.3s for 1200 or 1400 and 4.8s for not much less

I bought a L33 5.3 few weeks ago for $750 and 2 LM7 5.3s for $800 each last week.
LQ4 are hard to find and the bring a premium. LQ9 are impossible to find down here.

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[Kyle89]

That and the lq4 has slightly lower comp than the 5.3 by like .1 and I believe the guy said his 6.0s are all under 200k miles so I dont think it's to bad considering my stock tbi 350 has 324k and counting

 

[RDF1]

Yep.
LQ4 is 9.4
LM7 is 9.5
LQ9 is 10.0
L33 Is 9.9
There is another number for the next digit so those are rounded numbers.

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