Next reincarnation- 5.3 turbo

[87_HellCamino]

Agreed on the ECM: Holley or stock with HP tuners. Stay away from FI tech.

What issues or problems have you encountered or heard of with FI Tech? The features that got me considering are self learning, the lack of having to custom build a harness, it’s set up for turbo and transmission control, and of course the price point for all in one

 

[87_HellCamino]

Sick seats what are they from and who did the skins

Thanks, they’re from a Mazda MX3. 91-98
They came covered like that when I found them in the U Pull yard for only $40 for the pair

 

[87National]

Turbo will likely be a Garrett 7675,

VS Racing billet 7875 should meet your HP goal and spool quick with a correctly spec'd torque converter.

 

[87National]

Engine:
Starting with a fresh cast iron block- the future ability to have a larger max bore in the iron block vs the aluminum is worth more than the 100lb or so weight savings
9.9:1-10.4:1 compression
24x OEM crank
Diamond Racing forged pistons
PRC 220 heads
CTS-V oil pan
LS7 camshaft & lifters
Truck coils- round or triangle shape

I would just get a decent Gen 4 6.0 and call it a day. Lot's of folks getting a lot of life out of JY truck engines.

You could save yourself a couple of grand and you'd be happier with the lower rpm torque of the 6.0 vs the 5.3.

 

[64nailhead]

1st question, is your 383 broke, junk or blown up? If yes, then ognore the next sentence - your 383 with boost will meet your HP needs EASILY.

Assuming the 383 is no good, Any LS with a GT45 or VS7875 will get you in the 11's at 12-15psi of boost. I'm cheap, so take all of my next comments with a grain of salt, FORGET FiTech, frget the Diamond forged pistons and rebuild. Is your current transmission a TH350 or TH400? If yes then either will work if built properly. If you want a 4L80, then that's a great option as well. A stock rebuilt 4L80 will handle 1000hp without any special parts.

Regarding engine management, if you go with a 4L80, then a Holley Term X Max is by far the cheapest program available and the bonus is that it comes with brand new harnesses, O2 sensor and can be hooked up and running in about 4 hours if you hurry. If no 4L80, then either a Holley Term X or Megasquirt. 80lb Deka injectors will get you to your goal without issue. Sloppy Stage 2 cam with Pac 1218 springs.

My best advice : don't reinvent the wheel. And a 6.0 is a better plan, but when push comes to shove, a 4.8 with 200K miles on the ticker will get you to your goal.

As Chris mentioned, there a bunch of threads here with turbo LS builds. And I agree with Fleming, HP Tuners is great if you have the time and ability to learn it.

Again, dump the FiTech plan - that system poor and the support sucks.

 

[motorheadmike]

Damn French Canadians, sheesh. Hopefully Google translate works lol

It came back with this:

 

[melloelky]

1st question, is your 383 broke, junk or blown up? If yes, then ignore the next sentence - your 383 with boost will meet your HP needs EASILY.
I'm cheap, so take all of my next comments with a grain of salt, FORGET FiTech, forget the Diamond forged pistons and rebuild. Is your current transmission a TH350 or TH400? If yes then either will work if built properly.
Again, dump the FiTech plan - that system poor and the support sucks.

gives us first gen guys hope in this LS based reign of terror we live in..

 

[Injectedcutty]

It came back with this:

Yep, found it, typed it in here and thought I posted it, but guess not. The gif makes it better

 

[Northernregal]

It came back with this:

extraño amante de las emisiones solo basura

 

[64nailhead]

Vodka makeitadouble