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  #11  
Old 02-19-2014, 06:12 PM
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Originally Posted by Roman View Post
I think i totally missed what this thread was about lol.

I thought you had a friend, who use to work at GM, who had a modified 500ci BB, that was looking to get it running on fuel injection to use in a boat since he didnt want a carb.

I know nothing about tbi other than the basics of how it works. Best of luck to ya!
A '69 DeVille isn't enough of a boat?

The engine is staying in the car, but you have the details right, otherwise. It might have 25K miles on it and other than what they added/removed, it's all original. He has documentation that it spent most of its time on the 5 mile oval @100+MPH while they were testing with it.

As I wrote, this would be a lot easier if he had done it while he still worked there and now that I think if it, I'm gonna bust his chops for letting it go this long.
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  #12  
Old 02-22-2014, 09:33 AM
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I assume he is going to take a donor ecm, wiring harness, sensors and TBI off of something else?

Is he trying to do a returnless fuel system or an intake pump with return?

Here's few websites that might help him out a bit.

http://forum.tunerpro.net/

http://www.gearhead-efi.com/

Both of those sites have a ton of .bin and .adx mask files.
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  #13  
Old 02-22-2014, 09:35 AM
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The 7747 is a very common ecm and there a ton of custom .bin files for it. He may want to look in that direction.

Oh, I assume he's going with an older single wire or heated O2 sensor.
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  #14  
Old 02-22-2014, 11:59 AM
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Originally Posted by CantRepeat View Post
I assume he is going to take a donor ecm, wiring harness, sensors and TBI off of something else?

Is he trying to do a returnless fuel system or an intake pump with return?

Here's few websites that might help him out a bit.

http://forum.tunerpro.net/

http://www.gearhead-efi.com/

Both of those sites have a ton of .bin and .adx mask files.
Right- ECM, harness, sensors & TBI came off of a full-size truck but I'm not sure of the reason but he got them from a friend and if the system had a problem, it would have been revealed. I'm pretty sure he's using return-less but that doesn't mean he wouldn't plumb it for a return line, if necessary- he has a lift at home, built in the floor of his garage and it's the kind with foot controls.
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Old 02-22-2014, 12:10 PM
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Right on. If you find out what the ecm came off of I could probably offer up some more info.

There are a few places that sell the regulator springs and I'll look through my notes and links. Any idea what the CFM is on the stock carb on that 500?
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  #16  
Old 02-22-2014, 12:12 PM
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Originally Posted by CantRepeat View Post
Right on. If you find out what the ecm came off of I could probably offer up some more info.

There are a few places that sell the regulator springs and I'll look through my notes and links. Any idea what the CFM is on the stock carb on that 500?
No idea. I'll try to get the specs.

I bet he's kicking himself for not doing this sooner, when he still had easy access to anything he could possibly need.

In an earlier e-mail, I asked "Can't you just find a nice Hillborn system?".
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  #17  
Old 02-22-2014, 12:32 PM
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Actually, I have a heavier spring left over from my 383 build. I think with my new pump it ended up being a 22psi spring, which was too much for my motor. I couldn't get my VE tables in a manageable range without setting the base pulse width too low. It always ran very rich at idle and off idle. Lowering the psi to 18, using a softer spring, got my VE tables into a range of 30-95.

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  #18  
Old 02-22-2014, 12:41 PM
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Oh and an adjustable regulator.

http://marine-performance-parts.com/...843505774.aspx
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  #19  
Old 02-22-2014, 02:21 PM
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I'm sure he has used these but I suspect he wants to get it done and BE done with it. If need be, I'm sure he would yank the engine and put it on a stand at his friend's shop, so it can be tested on a dyno with all of the sensors for dialing it in. If he drove it more, he might leave the carb in, but he has enough cars that he doesn't need to and besides, if he did, he'd just be a spectacle- it's unlike any other Coupe DeVille.

Now that he's dealing with the carb issues with this one, I have to wonder what he'll do with his '70 Challenger when he finishes it.
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  #20  
Old 02-22-2014, 06:59 PM
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In floor lift and access to a dyno, must be nice!!
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