40 flathead EFI

[Bored&Stroked]

If I was heading down this path, I would surely use the Holley system as their EFI software is REALLY good (if it is the same software used on their other systems). Also, there are a lot of tuner/dyno folks that know how to USE the software - which is even more important.

[Thomas Sargent]

EFI project completed. Engine started instantly on the first try. This is the autotrend unit from CA. Installed Manifold pressure sensor, ambient air temp sensor, coolant sensor, idle air control motor, , throttle position sensor was on throttle body, and one wire went to coil. installed O2 sensor in pas ex pipe, and a Holley HP processor under the seat, pass side. Put in the tank fuel pump and pressure reg in engine compartment. Lots more details, DSC02703.jpg

DSC02705.jpg

DSC02707.jpg

IMG_8683.jpg

[mfirth]

Wow, that is nice. Nice job !

[Tim Ayers]

Awesome. Glad it works so well.

[petehoovie]

Originally Posted by Thomas Sargent

EFI project completed. Engine started instantly on the first try. This is the autotrend unit from CA. Installed Manifold pressure sensor, ambient air temp sensor, coolant sensor, idle air control motor, , throttle position sensor was on throttle body, and one wire went to coil. installed O2 sensor in pas ex pipe, and a Holley HP processor under the seat, pass side. Put in the tank fuel pump and pressure reg in engine compartment. Lots more details,

[mrtexas]

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Originally Posted by Thomas Sargent

EFI project completed. Engine started instantly on the first try. This is the autotrend unit from CA. Installed Manifold pressure sensor, ambient air temp sensor, coolant sensor, idle air control motor, , throttle position sensor was on throttle body, and one wire went to coil. installed O2 sensor in pas ex pipe, and a Holley HP processor under the seat, pass side. Put in the tank fuel pump and pressure reg in engine compartment. Lots more details, Attachment 563649

Attachment 563650

Attachment 563651

Attachment 563652

Cost?

[Thomas Sargent]

5 K for the throttle body package. 800 for fuel pump kit from Tanks, 200 for the intake manifold, 200 for the air cleaner, 50 for the filter from K &N,(not shown in pix),about 70 hours labor

[Thomas Sargent]

Three dollars for the nerve pills and Tums

[tubman]

"Starts immediately" is encouraging. Have you had it out on the road yet?

That's what I'd like to hear about. Keep up the good work!

[KiWinUS]

I will try to load a pic and video of an engine I built for a great couple of guys with Fuel injection. Unfortunately can’t load video.

[Bored&Stroked]

Once the partial load and road-test tuning is done, my bet is that it will run extremely well, get great gas mileage and be a total pleasure to drive. You did some really nice work on the install!

[tubman]

I like stuff like this. It's kinda like the time I tried to put a Quadrajet on a flathead using a Sharp 4 BBL manifold and a couple of adapters. It didn't work well the first time, but I may try it again, this time with a new carb from a 3.8L Chevy instead of a junk 455 Olds carb I tried to rebuild myself.

[jimTN]

Dynometer reading, before and after would be interesting.

[Bored&Stroked]

Yeah, I'd love to see some chassis dyno sheets on this new combination!

[Thomas Sargent]

Road trip today. Computer learning quickly. Smooth thru the gears. can start out at idle now with no pedal nicely. Was low on gas so returned to garage. Also need to minor adjust the clutch. Had it up to 35mph. Looks very promising. All vitals good on engine Snow storm coming next week so stay tuned.

[Seth Swoboda]

Post a video of this starting up and running please.

[Thomas Sargent]

Logged 30 miles today with the throttle body EFI. The computer is learning fast. This has met all my expectations so far. I filled up the gas tank in order to get a mpg. The display I have indicates air fuel ratio bouncing around 13 so that seems rich. I am using just the mechanical advance on the Stromberg distributor. Without a crank trigger there is no way for the timing to be managed by the computer. Will continue to drive for developments but so far so good.

[Thomas Sargent]

can't figure out how to post a video. site says a token is missing?

[glennpm]

You can't post then directly but you can post it on YouTube and then provide the link here. Like to see it.

https://socialbee.com/blog/how-to-post-on-youtube/

[Thomas Sargent]

here is my first try with youtube
https://www.youtube.com/watch?v=p7OsSdsdZFc
If this works out I will post more video