Re: 413 Motorhome
[Re: scannman70]
#2414773
12/07/17 04:43 PM
12/07/17 04:43 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Still a good motor to build?
I don't think they were ever a good motor to build for anything other than HD use, as designed.
The block, and maybe crank and rods are ok if you really want a small bore RB.
Other than the the rest is scrap. If someone gave it to you that would be a fair price, assuming they'd already pulled it too.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 413 Motorhome
[Re: Supercuda]
#2414811
12/07/17 05:53 PM
12/07/17 05:53 PM
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Joined: Jan 2007
Posts: 2,212 Minnesota
peabodyracing
top fuel
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top fuel
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Minnesota
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If memory serves, the heads are unique and have little to no value. The exhaust manifolds were prone to cracking, so good ones have some value if you can find the right buyer. See them on eBay.
Pistons were dished for low compression. Water pump setup is unique too, of no value. Oil pan of no value and limited applicability in my experience.
A good strong block with thick cylinder walls, typically can be bored out up to .120" for a 426 displacement bore. Good crankshaft and pretty standard connecting rods. I've seen 6 and 8 bolt crank flanges on them.
That said, I've one painted up on a stand in the pole barn. Put closed chamber heads on it and plan to use it for street use to move a station wagon around. Mine only had 45K miles on it. I paid $200 for mine several years back and was happy to pay that as good as it looked inside. I viewed it as a $200 short block in good condition.
Lead, follow or get the hell out of the way
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Re: 413 Motorhome
[Re: scannman70]
#2414846
12/07/17 06:55 PM
12/07/17 06:55 PM
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Joined: Apr 2003
Posts: 348 Texas Hill Country
Centerline
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Texas Hill Country
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Its a good starting point. However, as has been said the only thing from a performance standpoint on the "motorhome" version that's of any real use is the short block. Take that and add a good set of heads and better pistons and it can be a very respectable power maker.
Also, you only need to enlarge a 413s 4.18 bore +.70 to get to the 4.25 bore of the 426 wedge.
Centerline 64 Dodge Polara 426 Street Wedge - For when I want to go fast 99 Corvette Z-06 - For when I want to turn corners
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Re: 413 Motorhome
[Re: scannman70]
#2414851
12/07/17 07:04 PM
12/07/17 07:04 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Pistons are low compression scrap and finding useful non-low compression off the shelf 413 pistons or 426 WEDGE pistons is tough. Sure you can pay to have custom pistons though $$$.
I sure wouldn't pay money for it.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 413 Motorhome
[Re: scannman70]
#2415022
12/08/17 12:30 AM
12/08/17 12:30 AM
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Joined: Aug 2003
Posts: 43,315 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,315
Bend,OR USA
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I've used those blocks on several motors I've built to replace the 426 W blocks that where wore out. I have one in the shop now that I sonic tested last week, I will bore it from stock(4.170 or maybe there 4.180 stock ) to 4.250 and use a Mopar 4.150 stroke crank with stock Mopar rod journals and a set of Eagle 6.800 long Mopar H beam steel rods with a set of custom pistons to make a pump gas motor for my 1963 Plymouth Fury It sonic tested okay, it won't go much above 4.25 safely though I had the stock steel crankshaft offset ground down to 2.200 and increased the stroke to 3.910 for a 440 motorhome motor I have to make another 464 C.I. pump gas stroker with aluminum heads to sell
Last edited by Cab_Burge; 12/09/17 03:38 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 413 Motorhome
[Re: scannman70]
#2415158
12/08/17 12:09 PM
12/08/17 12:09 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Efficient? No it was not designed to be efficient
Durability was it's major feature.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 413 Motorhome
[Re: Centerline]
#2415377
12/08/17 07:47 PM
12/08/17 07:47 PM
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Joined: Jan 2007
Posts: 2,212 Minnesota
peabodyracing
top fuel
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top fuel
Joined: Jan 2007
Posts: 2,212
Minnesota
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Its a good starting point. However, as has been said the only thing from a performance standpoint on the "motorhome" version that's of any real use is the short block. Take that and add a good set of heads and better pistons and it can be a very respectable power maker.
Also, you only need to enlarge a 413s 4.18 bore +.70 to get to the 4.25 bore of the 426 wedge. Thanks for clarifying my error on over bore. I was going on 45+ year old engine work I'd had done, plus tired brain cells. As has been mentioned, they work good to replace 426W blocks, which were getting scarce even back then. My current 426W is a 413 block I'd bored to 426. It's certainly seen its' share of abuse over the years and hasn't failed me yet.
Lead, follow or get the hell out of the way
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Re: 413 Motorhome
[Re: scannman70]
#2415382
12/08/17 07:55 PM
12/08/17 07:55 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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Posts: 14,889
up yours
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My 64 300 came with a 413. I rebuilt it, put on 906 heads, added the Street Hemi grind cam, a 750 and 4.10 gears out back. It scooted well enough.
But it didn't start as a MH 413.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 413 Motorhome
[Re: scannman70]
#2415652
12/09/17 11:11 AM
12/09/17 11:11 AM
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Joined: Jan 2006
Posts: 8,162 USA
360view
Moparts resident spammer
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Moparts resident spammer
Joined: Jan 2006
Posts: 8,162
USA
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What kind of specs do factory industrial 413 camshafts have ?
From allpar
Quote Just in 1969, the big block V8s had around sixty variations. There were 413s with two-barrel carburetors, for school buses and dump trucks. There were six blocks, five cylinder-head variations, four camshafts, three timing chains, four flywheels, four torque converters, five different oil pans, and many different linkage brackets End quote
Last edited by 360view; 12/09/17 11:14 AM.
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Re: 413 Motorhome
[Re: peabodyracing]
#2415696
12/09/17 01:06 PM
12/09/17 01:06 PM
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Joined: Apr 2003
Posts: 348 Texas Hill Country
Centerline
enthusiast
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enthusiast
Joined: Apr 2003
Posts: 348
Texas Hill Country
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Its a good starting point. However, as has been said the only thing from a performance standpoint on the "motorhome" version that's of any real use is the short block. Take that and add a good set of heads and better pistons and it can be a very respectable power maker.
Also, you only need to enlarge a 413s 4.18 bore +.70 to get to the 4.25 bore of the 426 wedge. Thanks for clarifying my error on over bore. I was going on 45+ year old engine work I'd had done, plus tired brain cells. As has been mentioned, they work good to replace 426W blocks, which were getting scarce even back then. My current 426W is a 413 block I'd bored to 426. It's certainly seen its' share of abuse over the years and hasn't failed me yet. I originally wanted to do that on my Polara but couldn't find a 413 block at the time. Wound up with a 440 instead.
Centerline 64 Dodge Polara 426 Street Wedge - For when I want to go fast 99 Corvette Z-06 - For when I want to turn corners
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