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EFI????

Forum: C3 General Discussion

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EFI????

Posted: 8/6/15 9:02pmMessage 1 of 31
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kbrin
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coral springs, FL - USA
Joined: 3/25/2014
Posts: 71
Vette(s): 81 beauty all original (not anymore!!) Its more fun now!
looking for your experience and thoughts on adding EFI to my 1981 C3 350 your input would be appreciated.
Thanks

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Re: EFI????

Posted: 8/7/15 8:39amMessage 2 of 31
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lukesvette
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HOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
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...

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Re: EFI????

Posted: 8/8/15 5:38amMessage 3 of 31
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Sarge81
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WEST SENECA, NY - USA
Joined: 12/3/2001
Posts: 2381
Vette(s): 1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.
Here is a affordable system to check out. I believe one of our member here tried out this system with good success. 
http://www.affordable-fuel-injection.com/product-category/system/


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

3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


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Re: EFI????

Posted: 8/16/15 1:30pmMessage 4 of 31
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kbrin
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coral springs, FL - USA
Joined: 3/25/2014
Posts: 71
Vette(s): 81 beauty all original (not anymore!!) Its more fun now!
Thanks..
I agree its expensiveUnhappy
I am on my 2nd performer as i thought the 1st must be defective but its still having the same issue around town. Again on the road it runs like a champ but stop lights are a problem. (i may just have to runem!)
everything else seems to check ok. If i have to efi to solve this i just will have to bite the bullet. Any other thoughts??
Thanks again

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Re: EFI????

Posted: 8/21/15 8:58amMessage 5 of 31
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mrscott25
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Anchorage, AK - USA
Joined: 4/28/2015
Posts: 2
Vette(s): 1981 Coupe.
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.


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Re: EFI????

Posted: 8/25/15 10:00amMessage 6 of 31
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kbrin
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coral springs, FL - USA
Joined: 3/25/2014
Posts: 71
Vette(s): 81 beauty all original (not anymore!!) Its more fun now!
Thanks,
I am waiting for my fast efi-2 to come in and i will post my results when its installed.
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Re: EFI????

Posted: 10/13/15 6:37pmMessage 7 of 31
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kbrin
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coral springs, FL - USA
Joined: 3/25/2014
Posts: 71
Vette(s): 81 beauty all original (not anymore!!) Its more fun now!
fast EFI installed!!
I went for it, see below
FST EFI2.0
Dual sync distributor
MSD box and coil
In tank fuel pump
All new fuel lines.

Results: Instant acceleration
Defininite HP increase ( I will Dyno soon)
Instant starting
No stumble or lag

Best thing i have done to my 81 C3

I am loving this~!
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Re: EFI????

Posted: 10/13/15 6:46pmMessage 8 of 31
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Sarge81
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WEST SENECA, NY - USA
Joined: 12/3/2001
Posts: 2381
Vette(s): 1981 Blue Ice Met. w/pearl ghost flames TKO500 5speed. LS1 Swap 3.45 Dana 44.
Thanks great news to hear Kevin. Sounds like it all went together ok for you. Any minor glitches during the install? 

Yeah it is a more money than a carb, but if ones budget allows EFI is hard to beat. 
Can you post pictures sometime? I'd really like to see it.


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

3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975




Click here to see more pics of my Vette on CarDomain.


Lifetime Member #26
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Re: EFI????

Posted: 10/16/15 9:24amMessage 9 of 31
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kbrin
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coral springs, FL - USA
Joined: 3/25/2014
Posts: 71
Vette(s): 81 beauty all original (not anymore!!) Its more fun now!
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!!
I just drive it like I stole it!

I will post some pics later.



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Re: EFI????

Posted: 11/3/15 9:29amMessage 10 of 31
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kbrin
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coral springs, FL - USA
Joined: 3/25/2014
Posts: 71
Vette(s): 81 beauty all original (not anymore!!) Its more fun now!

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