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

 

anyone has experience with a terminator EFI? not even an avenger?

 

I have not. I hear then the Edelbrock E-Street set up works pretty good.

Edelbrock.com - Electronic Fuel Injection - Introduction

 

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:

 

Here's a good read on a different EFI system upgrade (Holley Avenger) whish is about half the price of the Terminator - they only picked up 1 MPG average on this one:

Holley

 

.. Good looking 400 in that picture... what's the heads and cam?

 

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.

 

.. 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...

 

I didn't catch that.

The system may have been retarding the timing, that hurts mileage pretty bad too.

 

. LOL! Yes, I didn't think of the computer retarding the timing from a knock sensor...

 

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.)

 

In to follow. Been looking at these as well.

 

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!

 

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.

 

.. 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...?!?!?