Engine help identify what 5.0 i have. H.O?

S

snackman508

Member

Jun 16, 2019

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Lancaster PA

Jul 16, 2021

#1

• Jul 16, 2021

• #1

ok so this motor came in a car and i was told it was a 5.0 H.O but not out of a mustang, he said it was out of something else but the same motor. So this is the motor 5.0 with efi, none H.O firing pattern. Has the S stamped on the heads, so I guess they are E6 heads, E9I ecu. Did they make a none H.O. efi motor? Would my ecu work with an H.O. motor or dose the tune have to match the cam.

 

S

snackman508

Member

Jun 16, 2019

9

2

13

Lancaster PA

Jul 16, 2021

#2

• Jul 16, 2021

• #2

O and its a MAF engine as well

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

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Jul 17, 2021

#3

• Jul 17, 2021

• #3

Yes, there was a non-HO efi engine that cam in vehicles like the town car, Thunderbird, cougar, crown Vic, etc. hp varies wildly. They are batch fire car.

in order for your ECU to work(although you didn’t state what you have so assuming a Mustang MAF ECU), you’ll need to change the cam for the firing order to match.

the Pistons on these are dished without eye reliefs, so you’ll want to check PTV clearance

 

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KRUISR

10 Year Member

Apr 16, 2015

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Jul 17, 2021

#4

• Jul 17, 2021

• #4

"Help Identify..." threads ABSOLUTELY need pics. The pic included looks like a polar bear in a snow storm.

 

S

snackman508

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Jun 16, 2019

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Lancaster PA

Jul 17, 2021

#5

• Jul 17, 2021

• #5

So I'm starting to feel like the guy who had it before me cobbled it together. A9L ECU on a pre HO motor would that work? It would explain why it doesn't run right.

 

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Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,249

17,934

224

Massachusetts

Jul 17, 2021

#6

• Jul 17, 2021

• #6

Looks like a non-HO to me. What’s the firing order on the distributor

 

S

snackman508

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Jun 16, 2019

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Lancaster PA

Jul 17, 2021

#7

• Jul 17, 2021

• #7

It's the older 1 5 4 2 6 3 7 8. And I confirmed it with valve opening. So moving forward the A9L ecu goes to the HO motor right.

 

KRUISR

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#8

• Jul 17, 2021

• #8

What car is the motor in? Cowl area is not Mustang. Also, fuel filter between intake and firewall scares me (it might work but personally I find scary).

I would agree, non-HO. Oil filler tube looks odd as well, almost modified part way up the tube (or just something with the pic).

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,249

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Jul 17, 2021

#9

• Jul 17, 2021

• #9

snackman508 said:

So moving forward the A9L ecu goes to the HO motor right.

Click to expand...

It doesn’t go with a specific engine, but rather a combo of parts.

in this case, a HO firing order cam and 19# injectors would likely get it running.

from what I can see, those are the gray #14 pound injectors.

I have seen guys get this setup working by rewiring the injectors to the HO firing order. I believe two pins will need to be swapped at the ECU. But, you’ll need 19# injectors

hack I know…but gets you running better

 

S

snackman508

Member

Jun 16, 2019

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2

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Lancaster PA

Jul 18, 2021

#10

• Jul 18, 2021

• #10

thanks so much this is really helpful. im just going to pick up an HO motor and swap it out.

 

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