thirdgen4me

iTrader: (1)

I was wondering when you change your intake and the EGR is then removed won't it cause issues? I read somewhere that it will cause a SES light and a spark advance. When I do my 350 vortec swap I planned on using an ECU from a 91-92 TBI350 truck and no EGR or smog/air pump.

RBob

iTrader: (1)

Yes, not disabling the EGR function in the calibration can cause a SES light, lean running and detonation (on a stock engine). On a Vortec engine it will not likely cause detonation, but will likely cause a SES.

Going with an engine using Vortec heads is going to require tuning, otherwise it will be a dog.

RBob.

thirdgen4me

iTrader: (1)

So I need a custom prom no matter what?

RBob

iTrader: (1)

Depends upon what you mean by a custom PROM, it will need tuning. And more fuel pressure and/or larger injectors. The Vortec engines make more power then the L03 engines. Plus you are going from 305 ci of displacement to 350 ci of displacement.

The stock 5.0l 55#/hr injectors at 22 psi are good for 270 HP. At 30 psi they are good for 316 HP.

RBob.

Tuned Performance

iTrader: (92)

You might not want to go to the 92 truck 299 ecm, nothing wrong with the 746 ecm. Take a look at rbob's ebl

thirdgen4me

iTrader: (1)

I read about the ebl and don't really understand how it works. I know about the injectors, I thought I could go to the salvage yard and grab an ECU and injectors out of a 350 truck. So if I grab injectors from a truck what needs to be done to my stock 305 ecu to make it work? Also won't my 305 dizzy work since I have a 92 and the ESC is located with the prom and not on the firewall like the older third gens?

thirdgen4me

iTrader: (1)

I am pretty much confused on what exactly I need for the 92 because its a little different than the 89 and older cars.. correct? What I want is to use the vortec motor for more HP than the old gen1 350 headed block.
-Weiand Stealth 4bbl carb intake with TBI adapter (No EGR or any emissions crap because I don't need)
-Shorty Hedman 68470 headers with Hedman 17478 2.5" Y pipe
-2.5" mid pipe because thats all I can find
-TBI mods
-Maybe change the cam and rockers like most people suggest.

I want to start buying parts one at a time as I get paid. I want to make sure I know exactly what I need before I buy it. I have a decent chunk of money coming in August (about 3k) and plan on using this to buy the motor, tires, and have the 700R-4 upgraded.

thirdgen4me

iTrader: (1)

Can anyone help me with answering the ESC module question? I have a 92 and was led to believe that the ESC is part of the prom. I am extremely confused please help!

I found a guy on ebay that sells the programmer and software to make your own chips for $200.(includes UV light) I think this may be over my head as I am a better mechanic than computer guy! I am leaning towards paying him $100 to just custom make me a chip.

Tuned Performance

iTrader: (92)

On tbi the esc module is located on your bulk head next to your master cylinder.

thirdgen4me

iTrader: (1)

Thought the 92 was part of the prom?

Tuned Performance

iTrader: (92)

On 90-92 tpi, and 3.1L LHO, 2.8L its attached to the memcal

thirdgen4me

iTrader: (1)

So when swapping motors do i need to change it somehow to work with the 350?

Tuned Performance

iTrader: (92)

Check the letter/numbers on your esc module you should be able to use it with a 89-90 caprice L05 knock sensor I believe the tbi 88-92 trucks knock sensor is the same you would need to cross reference the pn.

UnderCover89TBI

iTrader: (25)

truth of the matter is you're going to need tuning. So whether you get Rbob's FLASH EBL, or have someone burn you a custom chip multiple times over it is gonna have to be done. You need a plan. You need to know how much power you wanna make, then you can figure out what fuel injectors you're gonna need and all that.

Tuned Performance

iTrader: (92)

If you stay with the 746 ecm moates.net G2 , a burn 2 and sst27sf512 would be the lower dollar option. A plan and budget would be the first things you should have in mind.