EFI - best system?

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sworth66toro
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EFI - best system?

Postby sworth66toro » Wed Apr 25, 2018 8:33 pm

I'm in the process of getting my engine rebuilt and was thinking of converting to EFI. For the folks that currently have EFI, what system do you have and would you change it or do other upgrades at the same time, like distributor? I've seen articles on the Atomic system, but is this the latest/greatest?

Thanks in advance
steven

Mrtoro67
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Years Owned: 1967 Olds Toronado

Re: EFI - best system?

Postby Mrtoro67 » Thu Apr 26, 2018 3:38 am

Be careful of the height of the EFI system. You have a depressed manifold and the throttle linkage may not work without a spacer. Also you have a spread bore manifold if you are stock. I do not think the EFI systems work on spread bore only square bore make sure you check. Other things to think about is your air cleaner will not fit as it is depressed also and will not fit with the HEI or the EFI.
If you do not want to modify your hood think long and hard.
Mark

Otto Skorzeny
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Re: EFI - best system?

Postby Otto Skorzeny » Thu Apr 26, 2018 4:23 pm

Mr toro Is right. You can't even find an aftermarket carb that will fit under the hood properly.
If your Q-Jet needs a rebuild, send it to Tim Hewitt at Daytona Parts company. You won't be disappointed.

https://www.daytonaparts.com/

bcroe
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EFI - best system?

Postby bcroe » Thu Apr 26, 2018 8:25 pm

There are a lot of different EFI systems been fitted to old engines. MAP or
MAF based, throttle body or port injection, mapped ignition timing, knock
sensors, OX sensors, idle air motors, batch or sequential injection, saturated
or peak and hold injectors, to name a few. If you haven't studied the options,
I wouldn't recommend it.

I have worked on and off with varied EFI systems since 1990. A lot of owners
describe how they have struggled with theirs for many years. Some others
don't get all the Ts crossed and Is dotted, and settle for inferior performance.
I wonder why owners want to convert a good running setup to a new can
of worms to be mastered?

What I do recommend, is install an HEI ignition system, and an internally
regulated alternator, if you don't have them already. The HEI might need some
recurving, and an air cleaner from a late 70s Toro for clearance. 77-78 also
use a special EGR mount to clear the air cleaner. good luck, Bruce Roe

Otto Skorzeny
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Re: EFI - best system?

Postby Otto Skorzeny » Fri Apr 27, 2018 4:42 am

This company converts your existing distributor to HEI. That way, your setup looks stock and there are no clearance issues.

DAVE's small-body HEIs Converts your original points style distributor to HEI system
24 Buffalo Lane
Yerington, Nevada, 89447
775- 722-3294
info@davessmallbodyheis.com
http://www.davessmallbodyheis.com

Toronadotrofeo
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Years Owned: 1966 toronado
1981 toronado
1990 toronado
1991 toronado
1992 toronado

Re: EFI - best system?

Postby Toronadotrofeo » Fri Apr 27, 2018 7:52 pm

I just did fitech efi
I had to do lots of mods like everyone said
Intake linkage and blocked off crossover due the heat I’m very very happy with it

Mikel
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Location: New Haven, CT

Re: EFI - best system?

Postby Mikel » Sun May 06, 2018 6:42 pm

Toronadotrofeo wrote:I just did fitech efi
I had to do lots of mods like everyone said
Intake linkage and blocked off crossover due the heat I’m very very happy with it


Any performance/mpg changes?

Toronadotrofeo
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Years Owned: 1966 toronado
1981 toronado
1990 toronado
1991 toronado
1992 toronado

Re: EFI - best system?

Postby Toronadotrofeo » Tue May 08, 2018 6:52 pm

I really don’t know yet

RussBarnes
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Re: EFI - best system?

Postby RussBarnes » Tue Jan 29, 2019 3:57 pm

FYI - Holley now has a Sniper EFI that is a direct replacement for a Quadrajet as well as a matching distributor and the two talk back and forth with an O2 sensor so they can do continuous adjustments. I talked to the Holley people at SEMA last October, but while the Sniper looks good the problem I am having at this time is installing an in tank pump. I keep getting closer, but it's a challenge.

I did talk to Tanks INC about making a replacement tank that would have the in tank pump and fit, but while he has one that looks close, the didn't feel there was enough volume. I sent him photos and dimensions, but never heard back. So I had my tank boiled, sealed it with POR-15 tank sealer and painted the outside with POR-15 silver. One of the other issues is the crossover muffler and having a fuel line so close, but I am working on my solution to that and if interested, keep anyone posted.

Russ Barnes

RussBarnes
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Re: EFI - best system?

Postby RussBarnes » Thu Mar 07, 2019 8:55 pm

Thanks to Chris at EFI System Pro, I have all the parts to get the pump into my tank. They sell Holley and Tanks Inc parts and together I have the pump hanger, a 255lph Walbro pump. combination filter/regulator and am within days of finishing the plumbing. I cut an access hole in the trunk floor and with the parts I got I am 99% sure everything will clear. It will be awhile before I buy the Holley Sniper (from Chris), but it is coming along. :D


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