Vortec Head swap on my '92 TBI 350. Tuning questions.

**jdyates** · 07-06-2013

Originally Posted by dave w

I'm wondering if there are any clearance problems with the 350 TBI throttle blades being able to open all with way with the adapter plate you are using?

dave w

Not at all. I imagine I would if it were a 454 TB with bigger bores, but so far they work great.

EDIT: Without the adapter plate they would not clear, but it spaces the TB perfectly that they have just enough clearance to open fully.

**jdyates** · 07-10-2013

Alrighty guys, the 062 heads are on, and intake assembled and ready to be bolted on. Just need a new thermostat and housing, and a few hoses and clamps and i should be good to drive, while i get the Camaro fuel pump shipped to me.

Two questions,
1. Will the Camaro pump bolt right in in the stock one's place? No modifications?
2. When buying it, which pump should I use? Off a '90 IROC 5.7?

Also, who thinks they can whip me up a tune? Need EGR deleted and whatever else done to get her running tip top :)

**woody80z28** · 07-11-2013

Yes it will bolt right in and I think the 305/350 pump is the same but I ordered for a 350. And the PSI gauge shows what the injectors are seeing, and therefore their new lb/hr so you can set the spec in the tune.

**EagleMark** · 07-11-2013

Originally Posted by jdyates

Also, who thinks they can whip me up a tune? Need EGR deleted and whatever else done to get her running tip top :)

This guy may be able to help...

http://www.gearhead-efi.com/Fuel-Inj...1776-TBI-Chips

**jdyates** · 07-11-2013

Got the new pump and last few parts today! Went with a '90 IROC 5.7 pump. Gonna finish up assembly tomorrow afternoon and hopefully have the pump in by Friday afternoon. Thanks for all the recommendations and help guys, will post updated pics when I get to a computer!

**dave w** · 07-11-2013

Originally Posted by jdyates

Also, who thinks they can whip me up a tune? Need EGR deleted and whatever else done to get her running tip top :)

Remote tuning usually requires the vehicle owner to do data logging. How are you setup to do data logging? There are some AWESOME .adx files available here: http://www.gearhead-efi.com/Fuel-Inj...Information-42 (that are free)

Remote tuning can be done in real time with "net meeting" software that will allow the remote tuner to have control of the vehicle owner's laptop using WiFi connection to the internet and an emulator.

dave w

**jdyates** · 07-11-2013

Originally Posted by dave w

Remote tuning usually requires the vehicle owner to do data logging. How are you setup to do data logging? There are some AWESOME .adx files available here: http://www.gearhead-efi.com/Fuel-Inj...Information-42 (that are free)

Remote tuning can be done in real time with "net meeting" software that will allow the remote tuner to have control of the vehicle owner's laptop using WiFi connection to the internet and an emulator.

dave w

Unfortunately, i dont even have an aldl cable. And my home internet is via satellite, pretty mich doesn't allow anything close to "live" to happen. Too slow. I wouldnt mind getting a cable, but i did a quick search once and only found one, like $80.

**dave w** · 07-11-2013

Originally Posted by jdyates

Unfortunately, i dont even have an aldl cable. And my home internet is via satellite, pretty mich doesn't allow anything close to "live" to happen. Too slow. I wouldnt mind getting a cable, but i did a quick search once and only found one, like $80.

On the topic of tuning a performance TBI engine, a few things pop up in my mind:
Tuning is not low cost. - Increase the budget?
Tuning is not easy. - The more you know about TBI will make tuning easier. More homework?
Tuning is not quick. - It can take several maybe even dozens of data logs to get a good tune. My tool of choice is Microsoft Excel to do data analysis with.

dave w

**jdyates** · 07-13-2013

Originally Posted by dave w

On the topic of tuning a performance TBI engine, a few things pop up in my mind:
Tuning is not low cost. - Increase the budget?
Tuning is not easy. - The more you know about TBI will make tuning easier. More homework?
Tuning is not quick. - It can take several maybe even dozens of data logs to get a good tune. My tool of choice is Microsoft Excel to do data analysis with.

de w

Dont get me wrong, i absolutely DO want to learn how to tune! And i definitely know my way around my engine, also a quick learner, I know I can figure it out, but isn't the chip burning stuff well over $400?

**dave w** · 07-13-2013

Originally Posted by jdyates

Dont get me wrong, i absolutely DO want to learn how to tune! And i definitely know my way around my engine, also a quick learner, I know I can figure it out, but isn't the chip burning stuff well over $400?

With some good soldering skills the TBI ECM can be converted to a flash chip, which allow the chip burning stuff to be less than $100!

The link below is my writeup on converting to a flash chip.

dave w

http://www.gearhead-efi.com/Fuel-Inj...-%2827SF512%29

**EagleMark** · 07-12-2013

Originally Posted by jdyates

Unfortunately, i dont even have an aldl cable. And my home internet is via satellite, pretty mich doesn't allow anything close to "live" to happen. Too slow. I wouldnt mind getting a cable, but i did a quick search once and only found one, like $80.

Just gotta have a cable, PM robert from this thread, he has got the best prices.
http://www.gearhead-efi.com/Fuel-Inj...uy-ALDL-Cables!

Did you make sure your TBI bolts did not bottom out and hit the intake manifold? Big issue with that adapter you have!!! If they hit you have an instant vacuum leak!

**woody80z28** · 07-13-2013

Well worth the investment to hook up to a laptop, even when stock. Definitely essential when custom.

**jdyates** · 07-13-2013

Originally Posted by EagleMark

Just gotta have a cable, PM robert from this thread, he has got the best prices.
http://www.gearhead-efi.com/Fuel-Inj...uy-ALDL-Cables!

Did you make sure your TBI bolts did not bottom out and hit the intake manifold? Big issue with that adapter you have!!! If they hit you have an instant vacuum leak!

i hope they didn't bottom out! I used threadlock and tightened them until firm them stopped.

**EagleMark** · 07-13-2013

Well that's a crap shoot with that thin adapter! Look at your picture of adapter mounted to intake. See where the TBI bolts can go through and hit the intake?

You should really assemble it off the intake to TBI with gasket and thread the TBI bolts into adapter and see if they pass through when tight? Either grind down bolts or use washers on top of TBI bolts so they do not pass through adapter and hit intake!