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Old 03-12-2010, 02:57 PM
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Fuel Inj conversion from carb

I have a ZZ502 crate engine with an 850 carb and looking to possibly go to the Edelbrock FI system (part #35500) to enhance drivability. Anybody had experience (good or bad) with this?

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Old 03-12-2010, 06:01 PM
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I converted my small block years ago to the #3500 system. You got a chip that was "ballpark" based on your camshaft specs, then did tuning with the hand held calibration module. I did not like tuning with the hand held calibration module. I ended up converting the EMS to Holley's C950 and used my laptop. This was far superior (IMO).

But ... Edelbrock has made many upgrades since then including similar software to run on a laptop. And Edelbrock had excellent technical support, as least back then.

I think you will be satisfied with it, or an equivalent Holley system.

Good luck with the conversion.

Here's mine: http://www.edgesz28.com/edgesz28/fuel.htm

Ed
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Old 03-12-2010, 09:34 PM
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Thanks for the info EDGE. As I understand it, the Holley Commander system is for small blocks only? Maybe I'm mistaken. Their 35500 (Edelbrock) for the Chevy big block does have laptop capabilities though.
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Old 03-12-2010, 10:12 PM
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Holley makes a 4-barrel throttle body MPFI system. There are numerous options, depending on intake port style (oval or rectangular), injector size, wide band or narrow band O2 sensor, etc.

Go to summitracing.com and do a search for "fuel injection systems" then narrow it down by filtering options.

Try this Filter here as a starting point

There is a message board at chevytalk.org, and the fuel injection forum is loaded with Holley EFI guys, including the moderator who is an engineer at Holley. They can definitely point you in the right direction.

Good luck, Ed
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Old 03-13-2010, 08:19 AM
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Thanks, I will check it out. Nice ride by the way.

hughj
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Old 03-13-2010, 08:49 AM
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Have you looked at the Projection III system? It allows you to use your stock manifold and it keep the carb look. Does anyone have experience with it compared to the Holley, Fast or Edelbrock set ups?
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Old 04-10-2010, 08:15 AM
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I have a Holley Multi-Point Fuel Injection system for sale with a 950 commander computer.

http://www.hotrodders.com/ads/showproduct.php?product=7308

Thanks,
Rob
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Old 04-17-2010, 12:38 AM
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Highball

I have a VorTec 454 in a 99 Chevy and use the Edelbrock FI system along with an MSN ignition and a cold air intake. I haven't had any complaints and I do haul a 14,000 lb fifth wheel periodically. I have no complaints and Edelbrock was great with me when I needed some Tech ****tance too.
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Old 04-17-2010, 09:14 AM
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Thanks for the info Highball.
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Old 04-17-2010, 09:57 AM
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I have done an amount of FI work and if it were me I would go all the way and use a individual multiport system. I might cost a bit more but you will enjoy the results for a long time to come. They just make more consistent power with even fuel delivery across the board. There are systems that will self tune them selfs or you can do it on a dyno with a laptop. Either way your way ahead of the game over a carb.
Bill
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Old 04-17-2010, 10:50 AM
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Multiport all the way. I would look into the complete intake system and then run megasquirt. Its very user friendly and easy to tune!
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Old 04-17-2010, 11:05 AM
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What brands of systems are you meaning? I thought the Edelbrock was a multi-port system. Thanks for the input

Hugh
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Old 04-17-2010, 11:08 AM
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Quote:
Originally Posted by hughj
What brands of systems are you meaning? I thought the Edelbrock was a multi-port system. Thanks for the input

Hugh
yes it is. a couple people were suggesting the throttle bodies that look like carbs. if i were going fuel injection i wouldnt waste my time or money with a tb setup.
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Old 04-17-2010, 01:48 PM
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I am in the process of adapting an old Hilborn alchy system to an electronic system with a megasquirt style controller. Besides looking really awsome it will kick butt as well.
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Old 04-17-2010, 04:35 PM
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Sounds really cool. I am kind of a novice on the subject. What ia a mega squirter? Is it Nitrous?
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