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Old 03-15-2009, 08:51 PM   #1 (permalink)
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Chevy 350 to dodge 4speed

After gernading my 318 I am thinking about doing a chebby 350 swap into my powerwagon. I am wondering if anybody knew of a company that sold an adapter kit to bolt my 350 to my (i believe np435) tranny.

I will probibly get flamed for this but I dont care. So....this is my reasoning....I am doing this rather than another 318 because I have a totaled 91 GMC with the 350 tbi. I have been battleing not having fuel injection for too long and I cant find a cheep fuel injection kit for the 318.... Feedback wanted
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Old 03-15-2009, 09:03 PM   #2 (permalink)
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Mopar TBI is probably easy to come by, along with the engine too. Probably easier than fabbing engine mounts.
If you must do the Chevy swap check length of input shaft. Chevy used the transmission too but the inputs may be different. You can use the Chevy bellhousing and your transmission if the inputs are the same length. The transmission bolt pattern should be the same, if not use a Chevy transmission.
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Old 03-15-2009, 09:22 PM   #3 (permalink)
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bronkho31,

Not that i want to see a Cheby in a Power Wagon, but GM used NP435's, so you might want to swap the engine and tranny. Check out: Novak Info on NP435's

I'm running a 318 married to a NP435 in my M37. Just swapped out the Std NP435 for a Granny 1st NP435.
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Old 03-15-2009, 09:34 PM   #4 (permalink)
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The gmc came with an auto. 700r4 that is sold.
The bell housing wont work because it is an auto. But I am pretty sure I can get ahold of an older gm bell housing that is for the chevy 4speeds....hmm...
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Old 03-15-2009, 09:37 PM   #5 (permalink)
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bronkho31,

What year and model of Power Wagon?
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Old 03-15-2009, 10:16 PM   #6 (permalink)
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1980 150
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Old 03-16-2009, 01:36 AM   #7 (permalink)
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First, stupid idea. Second, you will not be able to use a common GM 4 speed bellhousing as the NP435 is pretty rare in GM trucks and was only used in the late '60s. Just buy a 360 out of a '89 or newer Ram and get all the TBI junk with it. They are easy to come by. Or go with a '93 and newer 360 Magnum with MPI that will out power any of the older LA series engines. Sell the GM engine to some GM guy for his buggy or something. It will probably be much cheaper in the long run to sell the GM crap and get a good Mopar engine that to bootyfab and scrounge for the parts to get a 350 to bolt to a Dodge NP435. Just my .02
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Old 03-16-2009, 07:14 AM   #8 (permalink)
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I disagree about the stupid idea part. But whatever.... I forgot the gm 4 speeds are sm465's right?
I would love to keep it a dodge, for what exact reason I dont know....
Dodge parts are usually more exspensive for me and alot harder to come buy because I have a bunch of friends who race dirttrack....all use ford/gm motors.

But the bell housing seems to be the big deal here unless I can find a bell or another tranny..
Maybe ill just use my roller 302......since the bell should be easier to find.
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Old 03-16-2009, 07:47 AM   #9 (permalink)
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Maybe, maybe not. I think Ford used a different diameter input bearing retainer so that could make the bellhousing not fit.
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Old 03-16-2009, 07:55 AM   #10 (permalink)
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One other thing that will need addressed is the clutch disc.The 465's have a fine 10 spline input and the Dodge 435's are fine spline.The input shaft diameter is a different also.
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Old 03-16-2009, 06:47 PM   #11 (permalink)
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you should be able to find a 318 pretty easy IMO
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Old 03-16-2009, 07:02 PM   #12 (permalink)
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Quote:
Originally Posted by Elwenil View Post
Maybe, maybe not. I think Ford used a different diameter input bearing retainer so that could make the bellhousing not fit.
The bellhousing to tranny bolt patterns are different between the Ford and Dodges too. I asked about using a Ford 435 behind a small block mopar several years ago and everyone said it was a waste of time.

I agree with everyone who has said to just dump the GM motor and get a good running late model mopar small block. MUCH easier to deal with and it will sell much faster down the road if you decide to go a different direction.
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Old 03-16-2009, 07:35 PM   #13 (permalink)
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The Dodge NP435 has a 23 spline (or in some older units 10 spline) input shaft with an 8-3/8" stickout
The GM / Chevrolet NP435 has a 10 spline input shaft with a 6-1/2"

Notice the input shaft length differences.

I'm running a 68 318 and 65 NP435 (10 spline) in my M
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Old 03-16-2009, 08:12 PM   #14 (permalink)
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Quote:
Originally Posted by W_A_Watson_II View Post
The Dodge NP435 has a 23 spline (or in some older units 10 spline) input shaft with an 8-3/8" stickout
The GM / Chevrolet NP435 has a 10 spline input shaft with a 6-1/2"

Notice the input shaft length differences.

I'm running a 68 318 and 65 NP435 (10 spline) in my M
Do you have a build up thread?
I would like to check it out. There are a couple M38's down the road that I could pickup cheap. I am afraid I would end up taking everything out of my rig and building a new rig.
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[COLOR="Olive"][SIZE="4"]Kodiak Dodge Build:[/SIZE][/COLOR][COLOR="YellowGreen"][SIZE="3"]https://pirate4x4.com/forum/showthread.php?t=702415
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Old 03-16-2009, 08:13 PM   #15 (permalink)
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ffdustyw,

No thread, but a full WEB site full of pictures and cometary. You can check out my M37 at: My 1953 Dodge M37 WEB site

Oh by the way I love your Truck (and thread)!
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Last edited by W_A_Watson_II; 03-16-2009 at 08:14 PM.
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Old 03-16-2009, 08:20 PM   #16 (permalink)
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pm crazycjman. he is running a tbi 350 with a 435 behind it, works great
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Old 03-16-2009, 08:35 PM   #17 (permalink)
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Quote:
Originally Posted by W_A_Watson_II View Post
ffdustyw,

No thread, but a full WEB site full of pictures and cometary. You can check out my M37 at: My 1953 Dodge M37 WEB site

Oh by the way I love your Truck (and thread)!
Thanks, I am checking it out right now.





EDIT: D*mn! that is one hell of a website. Good pictures. You need to start a thread here.
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[COLOR="Olive"][SIZE="4"]Kodiak Dodge Build:[/SIZE][/COLOR][COLOR="YellowGreen"][SIZE="3"]https://pirate4x4.com/forum/showthread.php?t=702415
[/SIZE][/COLOR]
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Old 03-16-2009, 08:49 PM   #18 (permalink)
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ffdustyw,

Thanks. The site was where I started, I share my stuff with a lot of Dodge Power Wagon guys over at Dodge Power Wagon Forum and at G741. My own WEB site was the simple soution when I started, Only been watching the Pirate site for about 6 months now.
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Old 03-16-2009, 09:52 PM   #19 (permalink)
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Im not worried about resale....if you have seen pics of the rig u would know why.....but you all definetly have me thinking....
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Old 03-16-2009, 11:06 PM   #20 (permalink)
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Just a quick thought, on Peoria's craigslist there is a magnum 318 out of a Dakota for sale for 500$, plus parts because it's still in the truck. Make that guy an offer that you can afford and take every thing he will give you. Like fuel pump, computer, or maybe the whole damn truck. Then sell your chevy engine for more than you buy the Dodge engine for and be happy, with your new cool ass multi point fuel injection motor, post pics on pirate so we can see your new mopar power plant, in it's new loving home between the framerails of truck that is going to be wheeled.
searching craigslist thousands of miles away
damn I'm bored
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Old 03-16-2009, 11:18 PM   #21 (permalink)
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searching craigslist thousands of miles away
damn I'm bored
Welcome to the Internet. Full of boredom, bullshit and porn, lol.
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Old 03-17-2009, 11:44 AM   #22 (permalink)
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Swap in a 360 and use the TBI off of the chevy, it should work fine if it is set up similar to the 350 exhaust and intake-wise (no headers or huge exhaust). Chevys have a shorter input shaft on the trans. Either use all Chevy or stick with Dodge.
Travis..
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Old 03-18-2009, 07:57 PM   #23 (permalink)
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I wouldn't do the Chevy 350 because then you have to fab up some mounts and you will have to address a bunch of other issues the biggest being the Tranny. IMO the 318 is more reliable then the 350. And I'd take a 318 any-fucking-day of the week. Sell the 350 and get some decent money for it and then strip and scrap the wrecked Chevy. Then get yourself another 318 and your good to go.

Or get yourself a 360 even better!

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Old 03-19-2009, 07:31 AM   #24 (permalink)
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I dont like to argue, but why not.....Honestly I dont like these 318 really at all....seems like dodge went out of there way to make these engines exspensive, ugly and hard to tune...maybe its just me, but I dont think they handle rpms as well as a 350 or a 302 and I have a roller 318. I'm sure I could think of more reasons but I wont because I have seen my fair share of 350s gernaded also....

Making motor mounts dosent bother me, ive been wanting to lower the engine anyways...but...finding a tranny/tcase to bolt up to the 350 may be what stops me. we will see....

Thanks for the help
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Old 03-19-2009, 01:19 PM   #25 (permalink)
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A 318 revs very well with a little head work. The 318's bad reputation comes from the fact that 90% of them out there are either mid '70s-'80s emissions engines with Lean Burn and other crap that kept their stock power at the 150 HP level and TBI setups that don't offer much flexibility over stock. Ask anyone who owns a late '60s to early '70s 318 and they will tell a different story. 230 HP stock with a 2BBL and wakes up real nice with a 4 BBL. 318's are dead simple to tune, reliable as any inline 6 cyl and it's small stroke and internal balance will rev well beyond it's limits with the right airflow. A buddy of mine used to street race a '73 Dart with a nicely built 318 on pump gas and the only 350s that ever beat him were full tilt race engines. Big blocks would have trouble against that little engine to the point that the scuttlebutt was that it was actually a 340. It was nothing more than a 318 built with some thinking and good parts.
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Last edited by Elwenil; 03-19-2009 at 07:24 PM.
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