454 woes

[bpwheelan]

Howdy everybody. I did a engine swap and then researched. Hopefully I don't forget and do it that way again. What I did was I put a fresh rebuilt 1993 454 TBI in a 1974 C30 dually. First time I did anything with a GM engine much less a throttle body. Theres a whole story how I got here and its not entirely my fault. Anyway, everything was going pretty smooth until I realized the ECM I bought with the engine wasn't original to it. Now I'm trying to figure what to do for a prom chip in a 1228747 ECM for the 454 in front of an ancient manual trans. I now realize there were better choices I could have made in doing this swap but here I am many hours and dollars later. This forum kept coming up in my searches for info so hoping for some sage advice.

[dave w]

This link ( http://www.gearhead-efi.com/Fuel-Inj...Information-4F ) has lots of 1228747 information, including several 454 .bin files in post #3.

dave w

[bpwheelan]

Thanks for the response, dave w. I did come across that thread in my searches. This is all new to me so please pardon my questions that probably have obvious answers. So does this mean it is not likely I’ll find an OEM prom that I can just stick in there and will have to change the socket and and get all the stuff necessary to burn a chip? And would that be best anyway since the rebuild included a cam with valve lift .478 Int. and .503 Exh? The truck has a flatbed and boom. I use it at my landscape business’s yard for lifting trees and boulders and such. It sits for months at a time so by no means is a daily driver. It’s a grunt truck and I’d like it to run strong but don’t need to win any races.

[dave w]

EPROM - Erasable Programmable Read Only Memory
EEPROM - Electronically Erasable Programmable Read Only Memory

Myself and other members here have the have software and hardware to erase and reprogram the original 2732 EPROM chip. The original 2732 EPROM is erased with an ultra violet (UV) light.

There are many low cost options to chip programming, like the moates.net Burn 2. Unfortunately, the Burn 2 can not program a 2732 chip.

Basically there are two chip programming options for the 1228747:
1. Spend money on a UV eraser and a chip programmer capable of programming a 2732 EPROM.
2. Spend money on modifying the 1228747 to accept a 27SF512 EEPROM which allows using the Moates.net Burn 2 for erasing and programming chips.

Tuning is another topic all in itself. Basically tuning optimizes Engine Performance with modified chip programming.

The ability to reprogram a chip is essential for "Tuning".


dave w

[bpwheelan]

Ok, I think I'm starting to pick this up. It looks like all this information is already available on this site but appreciate verification that I'm understanding everything right. So I want to solder in a modified 28 pin zif socket. Seems like the cleanest option. That should be pretty attainable for me since I have soldered various stuff on boards in the past. Then I could use the Ostrich 2.0 in place of the EE27SF512? If so I'll order one but looks like that emulator is on backorder for a couple months. If I've got this right so far then the next thing I would do is try to get someone who already has the hardware and software to burn me a 27SF512 appropriate for my application that I could use meanwhile waiting for the emulator. Does this make sense?

[PlayingWithTBI]

What about this?

http://www.dynamicefi.com/EBL_Flash.php

[dave w]

Here is the link for converting a 2732 chip computer like the 1228747 to a ZIF Socket, which would allow using a 27SF512: http://www.gearhead-efi.com/Fuel-Inj...sion-(27SF512)

Emulating with an Ostrich 2.0 is nice, but not necessary.

A Burn 2 chip programmer is nice also, but there are other options for programming a 27SF512 besides the Moates.net Burn 2: https://www.ebay.com/bhp/willem-programmer

It's likely many of the chip programmers in the link above will also program a blank 2732 chip. The 2732 comes in different variants even sub-variants, using either 25vdc, 21vdc, or 12.5vdc to program.

dave w