Rear mount engine
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Post Fiend
Joined: Jul 2003
Posts: 11,945
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From: Spokane, WA
Rear mount engine
Alright, not that I actually plan to do it this week but I've always thought it would be cool to have an engine mounted in the bed of the truck like monster trucks to assist with weight distribution and to look hella cool. If you were to do this the engine would have to face backwards. This being the case how do you correct the direction your wheels are turning? I'm just not sure if there's a gear in the tranny that can be goofed with or in the transfer case or if you just need a completely different kind of transfer case. Anybody have any ideas?
Cargo Master
Joined: Sep 2003
Posts: 2,110
Likes: 32
From: southwest pa
i was watching monster garage a year or so ago and they had this gear setup out of a powerboat to run a wheelstanding ambulance with the motor mounted in the back. that would be my best guess about where to start looking. it was from a boat the had the motor mounted in the rear. sorta made a v shaped drive line. you could probably get that monster garage episode or im sure some one on here knows what is actually used or where you could get a similar device
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Post Fiend
Joined: Jul 2003
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From: Spokane, WA
Originally Posted by proeliator
so maybe its an ignorant question.
If you place an engine in the bed of your truck facing forward the output shaft on the tranny is directly above your rear axle. Unless you point your pinion straight up and get a driveshaft like one of those from the scary steering site it's not going to work. You flip the whole thing around, engine facing backwards, and then your T-case is pretty much dead center between the axles. See what I mean?
Post Fiend
Joined: Sep 2000
Posts: 8,238
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From: Oregon
I do see what you mean, but I thought the monster trucks engines where more midmount anyways...?
Besides Mr. Fancypants, you can just chaindrive the rear axle without any solid shaft angularity issues
Besides Mr. Fancypants, you can just chaindrive the rear axle without any solid shaft angularity issues
Post Fiend
Joined: Sep 2000
Posts: 8,238
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From: Oregon
That makes more sense. Anyways, I could hazard some guesses as to what you could do to combat that but they would be only guesses. I really don't know what the big boys do. Why not you research it and present a book report to the group? 
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Posting Guru
Joined: May 2002
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From: Southwestern Michigan
A couple years ago I saw a truck at a mudbog that had a mid engine, he was also running some big axles like from a power company truck. He couldn't keep the thing going straight....seemed like not enough weight over the axle, Or he needed to overdrive the front to keep it going straight.
I do not remember if it was pointed forwards or back
I do not remember if it was pointed forwards or back
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Post Fiend
Joined: Jul 2003
Posts: 11,945
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From: Spokane, WA
I'll have to give Bryan a call when I'm not %$#& faced. Otherwise he'll talk me into that Eliminator block and a B&J tranny . . . and that's no good for anyone. The monsters pretty much all use the same T-case which appears to be (oddly enough) a giant chain driven unit with about a 2 foot drop. I'm wondering if the reverse they do is just in this case. I can't remember the name of the guy with crazy truck in your gallery (does Jeff Gotz sound right) but he's running a rear engine. I'd like to find out what he did.
Post Fiend
Joined: Sep 2000
Posts: 8,238
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From: Oregon
My guess is that they change the gears in the T-case too, since those are special units anyways. I forget the name of that guy with that truck in my gallery. Jeff something or another does sound right though. All I know is that its the future of Superbeast
edit: Telli! Good to see ya around, man
edit: Telli! Good to see ya around, man
Elder User
Joined: Sep 2002
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would you have to change anything? at the dragstrip there were two wheelie cars one elcamino and one cabover dodge they both ran with the engine facing the back of the cars and a divorced t case running off the front output.
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Post Fiend
Joined: Jul 2003
Posts: 11,945
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From: Spokane, WA
Hmm, now I'm wondering. I'll have to play with this when I get home. It's too hard to make sense of it in my foggy head. I'm wondering if the direction of rotation will still be correct.
Elder User
Joined: Apr 2004
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Ivan, you could get a front D60 from a chevy, turn the knuckles 180* and put in your truck upside down, then flip your rear diff upside down and relocated the spring pads, than would cause the diffs to turn in the opposite direction, therefore with your engine mounted backwards the truck would go in the right direction, the only down side would be your rear diff would be running on the coast side of the ring & pinion, but all the chevys run there front end this way anyhow, then order you a profab or scs drop box and mount it offset to the drivers side,
I had thought about doing this with my 49' (like you said for wieght transfer) but reconsidered since they probably would not let it fly in the street class,
I had thought about doing this with my 49' (like you said for wieght transfer) but reconsidered since they probably would not let it fly in the street class,
