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Old 10-28-2015, 07:17 PM
Ben Modified Ben Modified is offline
Super Member
Join Date: Oct 2015
Posts: 287
Default 1800% more horsepower than stock……...Hellcat Killer

In a straight line, at least!
This is an engine/chassis swap on my 1970 Daihatsu HiJet Micro Truck. The truck measures 4 ft wide by 9 ft long and will fit in the bed of a Ford F150

It was originally powered by a 22 hp 360cc two stroke water cooled two cylinder engine.

It is now powered by a 400 hp ZZ5 crate V8.

I swapped the chassis with one from a Jeep Dj5 (postal). It is two wheel drive with a limited slip Dana 44 rear axle. The frame is shortened and the back half is narrowed. Both the front and rear axles are also narrowed.

Both frame rails were full of acorns when I separated the two halves!

Here is the narrowed shortened frame, now fully boxed as well

The truck is being built up using an old low-perf 307 2bbl that I keep around the shop for builds. It is immune to the sparks and grit. The motor is mid-mounted and utilizes only a clutch, there is no transmission. I want this to be a sleeper, so I am maintaining the stock wheelbase and overall dimensions. That said, with a 66" wheelbase, there just isn't room for a whole lot. The engine is too tall to fit under the cab. With a power to weight ratio of less than 5 lbs per horsepower, a transmission isn't necessary. The truck will use an electric reverse, photos to come.

The One Speed is made up of a bell housing and a slice from a saginaw transmission.

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Old 10-28-2015, 08:00 PM
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smallfoot smallfoot is offline
He's rockin' the "Nuttin Special"!
Join Date: Nov 2013
Location: Flawda Flats
Posts: 5,435

Holy cow!!!
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Old 10-28-2015, 08:03 PM
Country Misfit Country Misfit is offline
I tell you... I get no respect!
Join Date: Feb 2013
Location: Augusta Ga
Posts: 1,228

Has it got a clutch?
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Old 10-28-2015, 08:47 PM
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rex1927 rex1927 is offline
Rusty Rat Rodder
Join Date: Mar 2009
Location: Murrells Inlet,South Carolina
Posts: 869

WOW that`s a short wheelbase.
Cool project,I like it
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Old 10-28-2015, 08:58 PM
I-R-POPS's Avatar
I-R-POPS I-R-POPS is offline
''Rusty Mopar Slacker''
Join Date: Aug 2012
Location: Tome, New Mexico
Posts: 3,354
Default That's scarey.....

Go for it!


48 DODGE Pilot House Rat

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Old 10-28-2015, 09:12 PM
Ben Modified Ben Modified is offline
Super Member
Join Date: Oct 2015
Posts: 287

The engine, clutch and rear axle are used as a unit and all ride in this cradle which also acts as a ladder bar setup. The front pivot mounts to the frame directly above the front axle. The rear leaf springs attach to the rear axle in their normal position.

The electric reverse consists of a late model Ford Taurus flex plate and starter. It will mount in this area

The mule motor and exhaust are in place

Built a custom aluminum gas tank. My friend William tig'd it together for me.

Had to move the steering column to the right so that I could get my leg in enough to close the door!

Fitted some gauges. No transmission means no speedometer output. Being direct drive, there is a correlation between the rpm and the mph. As it turns out, the speed is exactly double the rpm. When the tach reads 20 the speed of the truck is 40 mph

Running with the 307

At this point, the 307 is out and the 350 is going in. Hope to fire it up this weekend!


Last edited by Ben Modified; 10-29-2015 at 06:42 AM.
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Old 10-28-2015, 09:41 PM
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Sam_Fear Sam_Fear is offline
Brother Rat
Join Date: Oct 2008
Location: Dixon, IA
Posts: 12,331

Hope that steering wheel is bolted down good cause you're gonna be holdin on to it real tight.
Not so current build - '29 A Rats-N-Rice. Drivers! - '48 Olds '63 F100. Pile of parts - '30 Tudor.
Why do I always make my life so difficult? Because I can!
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Old 10-28-2015, 10:32 PM
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Bamamav Bamamav is offline
Rusty Rat Rodder
Join Date: Mar 2012
Location: Berry, Alabama
Posts: 4,505

I hope you own a tire store because those ain't gonna last very long! Probably need a bunch of lead ballast just to get it rolling!
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Old 10-29-2015, 06:01 AM
kenny c kenny c is offline
Rusty Rat Rodder
Join Date: Jan 2012
Location: West Greenwich R.I.
Posts: 2,562

Very neat.
Tetanus Tornado 49 F6
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Old 10-29-2015, 11:20 AM
dowoplover dowoplover is offline
Senior Member
Join Date: Feb 2011
Posts: 113

this is f'in ridiculous!! I used to drive one of those around campus when I worked for UTD....(with original power)
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