Why not a 413 ?

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383, 400, 426, 440.... but why not a 413? I've never owned one. They advertised 350-380 hp and 450-485 ft lbs of torque from the factory. Would it take much to get 450 hp and 525 ft lbs of torque on pump gas??? I'm looking to learn..... carry on, and thanks in advance
:thumbsup:
 
I see them as just small bore 440s. They share everything but pistons with the 440. If you can find pistons for it I don’t see why you couldn’t get to that power
 
Pistons are pricey. Some of the industrial ones will need different front dress. There were 413 Max Wedges so they can make power like all the other B/RB engines, it's just the obscure RB like the 350 and 361 B engines.
 
should you run 2.19/1.88 valves in a 4.19 bore of a 413?
 
Same advise . Pistons are an issue . Max Wedge pistons require Max Wedge heads which require Max Wedge intake which require Max Wedge exhaust . A lot of older 413s have old style freeze plugs that require a blow with a hammer to install . Truck/Industrial have a funky front drive . Marine 413s can be standard rotation or reverse rotation . They also have a funky front drive . ALSO , 426w have industrial/marine applications . Same problem with pistons .
 
383, 400, 426, 440.... but why not a 413? I've never owned one. They advertised 350-380 hp and 450-485 ft lbs of torque from the factory. Would it take much to get 450 hp and 525 ft lbs of torque on pump gas??? I'm looking to learn..... carry on, and thanks in advance
:thumbsup:
my buddy has one in his 68 dart. I have a 413 MW bare block laying around here as well. At one point, they were the legend on the strips. Heck, Jan and Dean, the Beach boys, the Super Stocks, all made songs about the 413 MW dodges.
 
Pistons are pricey.
meh. that is not exactly true. 413 pistons are about 10 bucks more a piece off the shelf than 440 pistons. and 60 on a set of 8 with similar piston specs as the 440s, just with a different bore size. This thru summit. The big factor is selection is limited.

413:
upload_2020-2-5_14-36-16.png




440:
upload_2020-2-5_14-38-33.png
 
Am I wrong? The 413's I have seen have very different motor mounts.
you're wrong. At least when it comes to passenger vehicle blocks. the marine and industrial ones can sometimes be different. But no, the mounting bosses are the same as on any other RB.
 
383, 400, 426, 440.... but why not a 413? I've never owned one. They advertised 350-380 hp and 450-485 ft lbs of torque from the factory. Would it take much to get 450 hp and 525 ft lbs of torque on pump gas??? I'm looking to learn..... carry on, and thanks in advance
:thumbsup:
I ran a combo on desk top dyno for my buddy the other day, give me a second and I'll find it.
 
383, 400, 426, 440.... but why not a 413? I've never owned one. They advertised 350-380 hp and 450-485 ft lbs of torque from the factory. Would it take much to get 450 hp and 525 ft lbs of torque on pump gas??? I'm looking to learn..... carry on, and thanks in advance
:thumbsup:
there is one on b bodies for $350.00
 
And some of the industrial/marine/motor home service blocks were cored on 440 water jackets. Sonic test and best of luck with what you can come up with. I myself probably wouldn't use 2.19/1.88 valves in any big block Mopar with smaller than a 4-3/8 inch bore. Chevy's do it with a smaller bore but they get benefit from it because of the canted valve angles help un shroud the valve as it opens away from the bore wall. If you already have heads with 2.19/188 it wont hurt anything, but you'd probably see better gains from 2.14/1.81 sizing. And I'm thinking that even the max wedges with their larger ports ran a 2.08/1.88 valve combination, but I'll have to double check that.
 
meh. that is not exactly true. 413 pistons are about 10 bucks more a piece off the shelf than 440 pistons. and 60 on a set of 8 with similar piston specs as the 440s, just with a different bore size. This thru summit. The big factor is selection is limited.

413: View attachment 1715464992



440:View attachment 1715464995

They are pricey for a cast replacement re-builder piston. Set of 8, 440 cast piston, $250. Set of Cast 413, $450. You can get Forged 440 pistons for under $400. Rings cost more too. It just cost more to rebuild the more obscure engines.
 
They are pricey for a cast replacement re-builder piston. Set of 8, 440 cast piston, $250. Set of Cast 413, $450. You can get Forged 440 pistons for under $400. Rings cost more too. It just cost more to rebuild the more obscure engines.
Perhaps, but they're not nearly as pricey as some make them out to be. for Keith Blacks, 440 pistons of the exact same family of pistons is 368.99 on summit, the 413 pistons, 429.99. Not that big of a difference.
 
I had a 413 out of a car long time ago. At that time I couldn't find any info or anything on it. I ended up using the crank in a 440 (nice forged crank that was factory drilled for a 4 speed.
I used the heads and exhaust manifolds on a 383 and gave the block away.

I later found out the piston rings from a Buick nail head 400/401 interchange
 
^^^Right On!^^^ Or, use aftermarket crank rods with 2.2 inch crank pins & .990 pins and take your pick of 4.25 inch chebby pistons. Find used parts and over the counter cast pistons while paying attention to your bob weights and you may be able to come up with a stroker on the cheap. i.e. 4.25 bore 4.25 stroke=471, doing it with the available 7.1 inch rods gives it a rod ratio 1.71. This combination should make great use of a fast rate of lift solid cam when using stock port window heads.
 
Great info and post here folks, and I appreciate them all. Thank you
 
Some larger valve sizes may require a clearance chamfer at the top of the bore, right where the valves gets close. I never had one, but I thought I remember seeing that somewhere. Maybe intake only.
If you get to 4.25" inch bore, things get less scary.
 
Some larger valve sizes may require a clearance chamfer at the top of the bore, right where the valves gets close. I never had one, but I thought I remember seeing that somewhere. Maybe intake only.
If you get to 4.25" inch bore, things get less scary.
That was on the 413 max wedges. The tops of the bore were notched to clear the larger valves of the max wedge heads. Regular big block heads with factory valves clear.

to be honest, if I were gonna go 413, I’d either max bore the thing to a 426, or go ahead, get the bores notched and run a set of aftermarket heads.
 
should you run 2.19/1.88 valves in a 4.19 bore of a 413?

Some larger valve sizes may require a clearance chamfer at the top of the bore, right where the valves gets close. I never had one, but I thought I remember seeing that somewhere. Maybe intake only.
If you get to 4.25" inch bore, things get less scary.

I built a 413 for a 300K, long ram motor several years ago.
I know I had to notch the bores, but I can't remember if they were 2.14 or 2.19 valves. Took longer to reclean the block than it did to add the notches.
 
Back in the early 70's, I had a 2 door Dodge 330 with a poly 318 in it that had been flogged hard by the previous owner. I drove it around for about 6 months & the oil pump failed. One of my neighbors was big into Mopars & said he had an old 413 sitting in the back of his storage building & said I could have it, as well as the old 4 speed attached to it. We drug my car down to his house & shoved the 413 & 4 speed in. It took some fab work for mounts, but it all came together. I had the car for another 4-5 years before selling it to build 2 '64 max wedge Belvederes. All in all, I think the 413 ran better than the max wedge on the street.
 
I like the idea of the 413 build with the speed master heads. Im'a thinking if you wanted to build a budget turbocharger combination to motivate a large and heavy vehicle, this would be a very good way to do it. :)
 
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