Holley Terminator EFI
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Freshman User
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Holley Terminator EFI
Hi.
This is my 400 with Tmeyer pistons
Now Im running a Barry Grant Road Series 625CFM but Im planing to get a bolt on EFI system.
My carb has a nice throttle response an I think this EFI system could be better. Also EFI has another advantages.
Does anyone have any experience with a Terminator EFI?
Tnx
This is my 400 with Tmeyer pistons
Now Im running a Barry Grant Road Series 625CFM but Im planing to get a bolt on EFI system.
My carb has a nice throttle response an I think this EFI system could be better. Also EFI has another advantages.
Does anyone have any experience with a Terminator EFI?
Tnx
Moderator
Joined: Dec 2001
Posts: 22,436
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From: Louisville,Ky.
I have not. I hear then the Edelbrock E-Street set up works pretty good.
Edelbrock.com - Electronic Fuel Injection - Introduction
Edelbrock.com - Electronic Fuel Injection - Introduction
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Joined: Mar 2004
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I am very interested in your review if you do indeed install the Terminator EFI.
I am using a smart-phone app on my iPhone called RoadTrip to track my fuel economy (or lack thereof). My build is in my signature.
Please keep track of your economy (if you do run a carb first) so we can all see how much fuel EFI saves.
Obviously the easy start, better throttle response, and always correct A/F ratios are benefits as well, but my interest in the fuel economy is to determine the break-even point with an upgrade. High teens would certainly make it justifiable from where I am at now...
Here is my fuel economy with my Edelbrock Thunder AVS 650 CFM carb - this is around-town driving with maybe 30% freeway miles:
I am using a smart-phone app on my iPhone called RoadTrip to track my fuel economy (or lack thereof). My build is in my signature.
Please keep track of your economy (if you do run a carb first) so we can all see how much fuel EFI saves.
Obviously the easy start, better throttle response, and always correct A/F ratios are benefits as well, but my interest in the fuel economy is to determine the break-even point with an upgrade. High teens would certainly make it justifiable from where I am at now...
Here is my fuel economy with my Edelbrock Thunder AVS 650 CFM carb - this is around-town driving with maybe 30% freeway miles:
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Joined: Jan 2013
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I wonder how that would work on something built a little more reasonable. A cam with 230/240 @ .050 isn't subtle.
The air velocity is going to suck at low RPM. Still a valid article, most of us don't have entirely reasonable engines, but a truck motor or a slightly hotter than stock engine would show more of a difference.
The air velocity is going to suck at low RPM. Still a valid article, most of us don't have entirely reasonable engines, but a truck motor or a slightly hotter than stock engine would show more of a difference.
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Laughing Gas
Joined: Dec 2012
Posts: 801
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From: Toledo, Ohio
.. I was surprised in that EFI test link that a 383" with 231/236 cam would run on 87 octane gas... must have fairly low compression ratio... which doesn't help the MPG...
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Joined: Oct 2008
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tnx! Stock heads enginetech stage 1 cam
Danny Cabral, who has a 79 EFI 460, told me a lot about Terminator EFI
Fuel injected engines don't suffer from oversize throttle bodies like carbureted engines do,
because the fuel can always be properly metered to the amount of air entering the engine.
Fuel injected engines don't rely on engine breathing (venturi effect) for proper fuel metering.
The 700 cfm TBI throttle body has 1½" bores, and actually flows about 650 cfm with the injector pod.
The 900 cfm TBI throttle body has 1¾" bores, and actually flows about 850 cfm with the injector pod.
The 950 cfm TBI throttle body has 1¾" bores, and actually flows 950 cfm because there's no injector pod.
Holley TBI units are CFM rated the same way as four-barrel carburetors - at a depression of 1.5 in/Hg.
(Two-barrel carburetors are rated at a depression of 3.0 in/Hg.)
Danny Cabral, who has a 79 EFI 460, told me a lot about Terminator EFI
Fuel injected engines don't suffer from oversize throttle bodies like carbureted engines do,
because the fuel can always be properly metered to the amount of air entering the engine.
Fuel injected engines don't rely on engine breathing (venturi effect) for proper fuel metering.
The 700 cfm TBI throttle body has 1½" bores, and actually flows about 650 cfm with the injector pod.
The 900 cfm TBI throttle body has 1¾" bores, and actually flows about 850 cfm with the injector pod.
The 950 cfm TBI throttle body has 1¾" bores, and actually flows 950 cfm because there's no injector pod.
Holley TBI units are CFM rated the same way as four-barrel carburetors - at a depression of 1.5 in/Hg.
(Two-barrel carburetors are rated at a depression of 3.0 in/Hg.)
Posting Guru
Joined: Nov 2008
Posts: 1,937
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From: wyoming
holley seems to be good system!
Been reading on these but ended up going with ezefi 2.0. Reason is cold start tunability. holley is catching up! they all have their place. My 2.0 showed up this week. working in colorado, sucks!
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There's an article featuring four systems head-to-head installed on a Nova in the March 2014 Car Craft. It's a great read!
It reviews:
MSD Atomic
FAST EZ-EFI 2.0
Edelbrock E-Street
Holley Terminator EFI
After reading it all, I would choose the terminator because of the easy hook-up to my C-6 tranny kick-down linkage.
I would also use the article-recommended Aeromotive Phantom Stealth-340 based in-tank fuel pump setup.
It reviews:
MSD Atomic
FAST EZ-EFI 2.0
Edelbrock E-Street
Holley Terminator EFI
After reading it all, I would choose the terminator because of the easy hook-up to my C-6 tranny kick-down linkage.
I would also use the article-recommended Aeromotive Phantom Stealth-340 based in-tank fuel pump setup.
Laughing Gas
Joined: Dec 2012
Posts: 801
Likes: 7
From: Toledo, Ohio
.. LOL! Your comment made me think of the new car commercials these days that try to get one to choose a new car based on the type of internet connectivity in it... what's our hobby come to...?!?!?
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