looking for your experience and thoughts on adding EFI to my 1981 C3 350 your input would be appreciated.

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That's a really, really expensive solution ($2K) for a carb thats loading up. For a mild 350, you could go with an Edelbrock 1406 and will basically run out of the box and be very close. IMHO...

http://www.affordable-fuel-injection.com/product-category/system/

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Thanks..

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I made the switch this summer.

Rather than a whole bunch of explanation take a look at my post here:

http://www.corvetteforum.com/forums/c3-tech-performance/3670852-fitech-go-efi-review.html

Overall I am very happy I made the switch.  Good performance and reasonable price.  My kit cost $1350 including the fuel system.

Thanks,

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fast EFI installed!!

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Thanks great news to hear Kevin. Sounds like it all went together ok for you. Any minor glitches during the install? 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Really no glitches except a few busted knuckles!!!!!! I let it learn on its own which was really close to optimum but I decided to tweak the WOT AFR ratio. Just move it 1% at a time and run it for a bit. Honestly I may reset and let it go back to the factory defaults. For now i'm just seeing if I can do better, but i don't think it can be done!! The only glitch i have found is I think I am burning more fuel----But really I don't even watch MPG or GPM!!

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/member_uploads/27501_27600/27535/7CD13_efi3.jpg

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Posted some pics. Having tech issues with my photo editor. My Vette is now more reliable than this piece of s--t!!!!

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Kevin, that looks sweet brother! With that air cleaner on there most won't even know a carb no longer lurks under there. Great job! 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Sarge..... Good eye! yup i snuck Wildwood Hydro for the TKO. You are correct, no one knows that im injected with the large KN and cover. thanks it is sweet and i'm kind of proud how the install went. no kidding--bolt her on and wire up. All wires were perfectly labeled so even a plumber like me had no problem. The damn thing tunes itself and really runs like a bat outa hell! The only problem is you have to be careful taking off as it is instant power. I just may have to get used to it

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FYI the only issue I have run into is the cheap chinese MAP sensor that comes with the kit. Replace with Delco or similar and it will be super stable. 

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I would let the company know of your findings. Good info! 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Sarge.... I called them and they think the map is ok. We know better!!!! Go Delco, no problems at all with it now.

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Jeez, you'd think the company would appreciate a little feedback on their products. That bothers me when they "think" their stuff is ok when in fact it was not. Like you said, we all know better. But, now we can advise others of this issue if they use this system. Glad to hear your car is running good. 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Sarge, thought i would give an update as i have been beating it up for a few months now!!!

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That's awesome to hear Kevin! 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Sarge, did they give you a shipping date? My understanding is that they are hundreds backlogged (600 hp version) due to supplier shippng issues. I like what I've read on their tbi's but the fcc is causing nightmares.

I would like to thank everyone for hanging in there while we build our production to meet demand. We have to say that it has been a thrill having such success with this product and we are increasing production by at least 20% weekly! Each system is fully dyno tested on an engine and we will not sacrifice quality for speed and supply.(You will smell the fuel when you open your box !!) We expect to be at full production within 4 weeks and are investing in all tooling and manpower to make sure that quality is never sacrificed to meet demand no matter what. Thank You for supporting our EFI and please know that your Fitech EFI is worth the wait!! 
Nobody ever expected the success we are having with this product and we feel blessed to be part of this awesome wave!
Thanks,
Ken Farrell

|UPDATED|5/3/2016 3:15:56 AM (AZT)|/UPDATED|


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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Checked out the site and i think you really need the dual Quad!!!!

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I just saw that on their page as well and was going to post it up. I also like that they test every unit, I hope that whatever the issue(s) ith the fcc is that it gets fixed. Looking fwd to reading your review.

|UPDATED|5/3/2016 4:57:23 PM (AZT)|/UPDATED|

Congrats on the conversion Kevin....!!!          

Sarge,  I'm looking at that same setup (from Pace Performance) to put on "BIGBRRD".  Just don't want to be fooling around with a carb in the mountains.  Going to use their Fuel Command Canister and pull the charcoal filter out.  Their tech suggested using one of the return vapor lines to drain any excess fuel back to the tank.

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Jim Olson 

"The Toys"...!!!  Save the Wave!

Where I've been in a Corvette...!!!

Hey Jim, I'll update you with my opinion of their system when I get it and get it installed. I think it should work with your shaker hood scoop on BIGBRRD. I measured the height on a old Rochester 4 bbl carb. They are the same height. 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

Kevin - still liking the TBFI conversion?  Any other issues pop up?

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Jim Olson 

"The Toys"...!!!  Save the Wave!

Where I've been in a Corvette...!!!

Jim, I now have my all FiTech stuff. Looks like I will be tackling that project in August now. 

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GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.

After putting in a Delco Map sensor I have to say that i am still in love with this thing and have not had any problems at all.

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HEY! Thats a nice TA!!!!!!!

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Thanks - that photo was taken in the fall of 2008 shortly after we got it back from the body shop (the first time).  It went back in the next spring after the paint had time to cure for another round of color sand-n-buff before the "screamin' chicken" and the rest of the graphics went on.  Have also replaced the original snowflakes with the 8 inch snowflakes.  As nice as it looked then I think it looks a lot better now.  I'll have to get a more recent photo linked in.

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Jim Olson 

"The Toys"...!!!  Save the Wave!

Where I've been in a Corvette...!!!