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Old 09-29-2011, 08:14 AM   #1
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Howell fuel injection

Has anyone had a Howell fuel injection system on a 304? I'm wondering about mileage and Altitude compensation. Any knowledge would be appreciated. Thanks, John

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Old 11-28-2011, 06:01 PM   #2
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Bump. I have the same question.

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Old 11-28-2011, 06:46 PM   #3
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Originally Posted by johninmichigan View Post
Has anyone had a Howell fuel injection system on a 304? I'm wondering about mileage and Altitude compensation. Any knowledge would be appreciated. Thanks, John
I have Howell EFI on my AMC 401. Engine has been transplanted into a YJ (but it's essentially the same as a CJ)

My mileage is comperable to when I had my motorola 2100 carb. Little bit more power, and little bit more (percieved) economy. But I never really checked exact numbers. Driveabilty is nice. Installation was easy. Runs good on it's side and upside down (and when I say 'upside down", I mean "upside down'). Also runs really good on STEEP inclines.

You can get a couple different versions of this kit, either with distributor or without, and with emissions or without. My kit is NON emissions, non distributor.
Jeep TBI Products :: TBI KIT: 1972-93 304, 360, 401 V-8 Jeep/AMC, Offroad - Howell Engine Developments, Inc.
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Old 11-29-2011, 08:02 AM   #4
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Thanks, I'm glad to hear that. I was begining to think nobody is using them. John
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Old 11-29-2011, 03:45 PM   #5
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Thanks, I'm glad to hear that. I was begining to think nobody is using them. John
You aren't that far off. EFI has been prevelant for 25 years. Not many of us with old school engines any longer.
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1997 TJ, 350 V8, EFI, TH400, Atlas 4spd, D60s, Detroits, Warn 12000, Cage, 40 Kevlars
TTC 1994, TTC 2012, Trail Tour participant.
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Old 11-29-2011, 05:39 PM   #6
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That does make sense. I'm still old school but want at least that part of the new stuff. I wonder how long companies like Howell will be able to survive? I understand they use alot of OEM parts. Which should help in later times for replacement of components. This is going to be my DD so that's important.
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Old 11-29-2011, 09:44 PM   #7
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Originally Posted by johninmichigan View Post
That does make sense. I'm still old school but want at least that part of the new stuff. I wonder how long companies like Howell will be able to survive? I understand they use alot of OEM parts. Which should help in later times for replacement of components. This is going to be my DD so that's important.
The only Howell component is the wiring harness. Everything else is either OEM GM or aftermarket fuel pump. All those parts are widely supported and readily available. Even the Howell wiring harness can be swapped for a GM truck harness, if you don't mind thinning it out yourself.
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1992 YJ, 401 V8, EFI, TH400, Atlas, D60s, Detroits, Warn 8274, Cage, 37 Krawlers
1997 TJ, 350 V8, EFI, TH400, Atlas 4spd, D60s, Detroits, Warn 12000, Cage, 40 Kevlars
TTC 1994, TTC 2012, Trail Tour participant.
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Old 11-30-2011, 05:32 AM   #8
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Where did you put the ECU? and did the first program they gave you close for your setup? I may pickup an aluminum Intake to install at the sametime as the EFI. I'm hoping to come up with a used one.
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Old 12-01-2011, 10:34 AM   #9
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Runs good on it's side and upside down (and when I say 'upside down", I mean "upside down').
Lovin' it!!! I bet it's a good story!
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Old 12-01-2011, 02:56 PM   #10
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My son put the Howell on his 72 304 and it has been fine. Only problem was a weak fuel pump from them that came with the kit. Only had 2,000 miles and when pump got hot it wanted to quit.
Ron
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Old 12-01-2011, 03:04 PM   #11
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Originally Posted by johninmichigan View Post
Where did you put the ECU? and did the first program they gave you close for your setup? I may pickup an aluminum Intake to install at the sametime as the EFI. I'm hoping to come up with a used one.
I drilled a hole thru the firewall, and slid the wiring thru. The ECU is mounted where the ashtray used to go, on the underside of the dash, easily accessable.

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Lovin' it!!! I bet it's a good story!
It was an expensive story. New hood, grill, both fenders, and an aluminum radiator. But we drove it out. New radiator the next day, and continued the week long trip, albeit with mangled front clip. I will say, that on that day, the cage saved my (and my wife's) life. It was very violent.

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Originally Posted by Frisco Rubi View Post
My son put the Howell on his 72 304 and it has been fine. Only problem was a weak fuel pump from them that came with the kit. Only had 2,000 miles and when pump got hot it wanted to quit.
Ron
I carry a spare fuel pump, and several of the sensor with me in my 'kit'.

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1992 YJ, 401 V8, EFI, TH400, Atlas, D60s, Detroits, Warn 8274, Cage, 37 Krawlers
1997 TJ, 350 V8, EFI, TH400, Atlas 4spd, D60s, Detroits, Warn 12000, Cage, 40 Kevlars
TTC 1994, TTC 2012, Trail Tour participant.
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