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Truck 440 build recipe #558565
12/20/09 04:00 PM
12/20/09 04:00 PM
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Mesa, AZ
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Pat_Whalen Offline OP
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Trying to do my first 440 buildup. This will also be the first engine I've ever put together my own shopping list for and I could use a little help to make sure I'm not wasting money with mismatched parts.

With that said, the engine is going in an 80 ramcharger with a 727 and 4.11 gears. I'm trying to stick to a budget and reusing parts. Ill be using the factory 452 heads that were on it and the edelbrock performer intake. I've got the tools and skill to port the iron heads with the molar templates.

The block is already .030 over and there is rust on he back cylinders so it will have to go at least, at a minimum .040.

I guess the two variables to my build are pistons and cam. I've considered the summit 6401 kit for the cam.

I know the pistons in there right now are .155" in the hole, calculating out to 7.7:1 CR. What should I shoot for for pistons. An actual part number would be appreciated.

I would like stump pulling torque and some nice stop light-to-stop light power, while running on pump has with good reliability.

Lets hear your tried and true recipes and/or opinions on my build.

Thanks

Re: Truck 440 build recipe [Re: Pat_Whalen] #558566
12/20/09 04:08 PM
12/20/09 04:08 PM
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SomeCarGuy Offline
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The Summit cam should be fine for that build.


I want my fair share
Re: Truck 440 build recipe [Re: SomeCarGuy] #558567
12/20/09 04:57 PM
12/20/09 04:57 PM
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Holland MI Ottawa
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2boltmain Offline
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What about a stock oem replacement cast piston for the 68-71 440 hp motor? Seems like a set made by Silvolite or Badger would not be expensive and be closer to the deck at TDC. Does badger even exist anymore?


Keep old mopars alive.
Re: Truck 440 build recipe [Re: Pat_Whalen] #558568
12/20/09 05:09 PM
12/20/09 05:09 PM
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Chilliwack B.C. Canada
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RUNCHARGER Offline
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I know you said low buck but sometimes spending a bit extra is the best value. I would buy some Ross flat tops for it. You will get closer to a true 9.5 or 10-1 compression and the engine will be much more efficient. It will get better fuel mileage and make more power than with cheap, replacement, cast pistons. the pistons will cost you about $200 more than the cheapies.
I've had 440's with replacement, cast pistons in them and every one of them was a dog.

Sheldon

Re: Truck 440 build recipe [Re: RUNCHARGER] #558569
12/20/09 06:11 PM
12/20/09 06:11 PM
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Mesa, AZ
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Pat_Whalen Offline OP
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Would hypereutectic pistons be alright? For example, Keith black kb237 pistons say they'll produce 9.9:1 cr. I can be happy with that.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558570
12/20/09 07:46 PM
12/20/09 07:46 PM
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Marilla, New York
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RalleyA12 Offline
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You say this build is for a truck, do you plan on doing much towing? If so, you might want to keep it closer to a 9 to 1 compression. The KB184 piston has a .140 pop-up so it can be custom fit to the depth of the chambers on your 452 heads to give you the preferred .040 piston to head clearance. Hughes Engines has some short duration cams with a decent amount of lift to give you plenty of bottom end.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558571
12/20/09 10:19 PM
12/20/09 10:19 PM
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SW Fla.
CYACOP Offline
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Go with the KB 184 pistons and the Summit cam.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558572
12/20/09 10:54 PM
12/20/09 10:54 PM
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Lincoln Nebraska
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RapidRobert Offline
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might spend the extra to get .040" quench so you can run a higher CR on the same octane gas. It will take some extra as you'll have to machine each open head recess to equalize them as the slope and depth varies but you want all the torque you can get and as said you dont want to end up w a dog after all this work.


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Re: Truck 440 build recipe [Re: Pat_Whalen] #558573
12/20/09 11:41 PM
12/20/09 11:41 PM
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Manitoba, Canada
DaytonaTurbo Offline
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KB237 pistons for sure. You won't have quench, but without milling the block at all and with the .020" steel shim head gaskets you should be at around 9.5 compression. With the right cam and premium fuel it will do okay. Actually I would deck the block to bring the pistons to zero deck while you're in there, that way if you ever choose to go to aftermarket closed chamber aluminum heads in the future, you'll be setup perfect for them.

You can run the big summit cam if you're needing to pinch an extra 80 bucks from the budget. I would be more likely to look at the comp xe275hl or lunati voodoo 60304 myself.

But both of the above suggestions are assuming you're going for more of a street machine than a tow/utility/4x4 rig.

Re: Truck 440 build recipe [Re: DaytonaTurbo] #558574
12/21/09 02:33 AM
12/21/09 02:33 AM
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Mesa, AZ
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Pat_Whalen Offline OP
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Quote:

KB237 pistons for sure. You won't have quench, but without milling the block at all and with the .020" steel shim head gaskets you should be at around 9.5 compression. With the right cam and premium fuel it will do okay. Actually I would deck the block to bring the pistons to zero deck while you're in there, that way if you ever choose to go to aftermarket closed chamber aluminum heads in the future, you'll be setup perfect for them.

You can run the big summit cam if you're needing to pinch an extra 80 bucks from the budget. I would be more likely to look at the comp xe275hl or lunati voodoo 60304 myself.

But both of the above suggestions are assuming you're going for more of a street machine than a tow/utility/4x4 rig.




The truck in question will actually be a daily driver (economy is marginally important, all things being considered), and will see frequent off road and trail use.

I just poked around the COMP website and was pretty enamored by the tech they've got on cam selections. Now I've got my eye on the xe256h (256*/268*, .447"/.455"). Or should I step up to something like the xe262h (262*/270*, .462"/.470")?

Thanks for all the help thus far.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558575
12/21/09 02:52 AM
12/21/09 02:52 AM
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Florida STAYcation
BeEtLeJuIcE ! Offline
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Quote:



I would like stump pulling torque and some nice stop light-to-stop light power, while running on pump has with good reliability.







I would SERIOUSLY consider putting in a 413 from a motorhome. They are fairly cheap and have that stump-pulling-torque.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558576
12/21/09 06:45 AM
12/21/09 06:45 AM
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BDS871Cuda Offline
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Quote:

Trying to do my first 440 I could use a little help to make sure I'm not wasting money with mismatched parts.
I've got the tools and skill to port the iron heads with the molar templates.

Thanks




With a low rpm cam and just wanting stump pulling
TQ. I would not waste the time on porting the
452 heads. Just clean them up real good and let
a good shop do the valve job.
If you were going to run a big rpm cam and were
going to street/strip the thing, yes then porting
would pay off. Sounds like you just want a low
rpm (under 5500 rpm) 440 TQ motor. A bone stock
440 with a simple .470-.480 lift cam will make
all the TQ you need for your street 4X4. Any more
and you start busting axles.


Snap your neck, mega G-force launch, is all I want!
Re: Truck 440 build recipe [Re: DaytonaTurbo] #558577
12/21/09 08:02 AM
12/21/09 08:02 AM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
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Quote:

KB237 pistons for sure. You won't have quench, but without milling the block at all and with the .020" steel shim head gaskets you should be at around 9.5 compression. With the right cam and premium fuel it will do okay. Actually I would deck the block to bring the pistons to zero deck while you're in there, that way if you ever choose to go to aftermarket closed chamber aluminum heads in the future, you'll be setup perfect for them.

You can run the big summit cam if you're needing to pinch an extra 80 bucks from the budget. I would be more likely to look at the comp xe275hl or lunati voodoo 60304 myself.

But both of the above suggestions are assuming you're going for more of a street machine than a tow/utility/4x4 rig.




I'm running the 275 in my "440" (383, .060 over, 3.750 stroke--438 cu in) with flat top Ross pistons, .040 head gasket, eddy closed chamber heads and that XE-275-HL cam, when I had the power brakes on the truck, it had more than enough vacuum to keep them happy, and it makes gobs of torque, attached is a graph from my dyno visit. peak torque was 535, but was over 500 ft lbs from 3,000 rpm through 5000 rpm. with a properly matched torque converter and 4.10 gears, that cam would do well in a "stock 440" (with OEM heads)

it's got a really nice lope to it as well at idle. I run pump gas through it and never had a problem, and I've had both OEM iron heads and the eddy aluminum heads on this engine with that cam.

5680817-DynoGraph.JPG (135 downloads)

**Photobucket sucks**
Re: Truck 440 build recipe [Re: 70Cuda383] #558578
12/21/09 08:55 AM
12/21/09 08:55 AM
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Florida
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hey Pat

did you get the Motor mounts and xmember worked out?

on to the rebuild


Re: Truck 440 build recipe [Re: scratchnfotraction] #558579
12/21/09 10:10 AM
12/21/09 10:10 AM
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Mesa, AZ
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Pat_Whalen Offline OP
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Quote:

hey Pat

did you get the Motor mounts and xmember worked out?

on to the rebuild






I had actually written the big block off at the moment in favor of a fully assembled small block, just to get the truck running for the coming summer with plans to build the 440 in the meantime. Unfortunately, tearing down the smallblock just to check it revealed some really disastrous rust that would have required even more dough to rebuild than the big block. So the 440 got the nod, and I'll have to still straighten out the engine mount situation. I have decided to save myself some time and aggravation though by finding a suitable mated 727/np208 as opposed to trying to custom fit the 2wd 727 and divorced np205. I'd still like the 205 for the power the big block will be putting out, but I'll have to live with a 208 for the time being.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558580
12/22/09 11:41 PM
12/22/09 11:41 PM
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Mesa, AZ
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Pat_Whalen Offline OP
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One quick bump to maybe get some more opinions

Re: Truck 440 build recipe [Re: Pat_Whalen] #558581
12/23/09 09:02 AM
12/23/09 09:02 AM
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Grand Haven, MI
patrick Offline
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for a heavy truck with an emphasis on daily driver duty, I'd probably use the KB237's, setting them up near 0 deck, and for a cam, I'd look at a comp XE268 or a lunati voodoo 60303, using comp 915 springs with either.


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Re: Truck 440 build recipe [Re: Pat_Whalen] #558582
12/23/09 12:12 PM
12/23/09 12:12 PM
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Marilla, New York
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RalleyA12 Offline
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Just remember that if you are going to lug the motor at lower RPM's squish becomes more important. This is due to the greater threat of detonation at lower RPM, that's why I recommended the KB184 pistons. The slightly lower compression will help if you get into pulling a load up a long hill, because the heat you will generate under those conditions will increase the likelyhood of detonation. The build really comes down to how you plan to use the motor. Just remember, squish is always good and should provide a slight power increase over a comparable compression ratio motor that doesn't have squish.

Re: Truck 440 build recipe [Re: RalleyA12] #558583
12/23/09 01:17 PM
12/23/09 01:17 PM
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Mesa, AZ
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Pat_Whalen Offline OP
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I guess the next question would be, what is the safest compression ratio you can run on pump gas with iron open chamber heads.

The KB237s calculate out to 9.9:1 CR. Is this to high to run pumpgas on?

I don't really intend on trailering anything, so out goes lugging it up hills. I did talk to the guy who will most likely be doing my machine work and he mentioned the machining of the pistons for an appropriate quench would cost quite a bit extra and may not be worth it if budget and daily driving are in the equation. He did suggest the KB237s and then work the compression ration around how far they wind up in the hole.

Re: Truck 440 build recipe [Re: Pat_Whalen] #558584
12/23/09 10:47 PM
12/23/09 10:47 PM
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Cookeville
Chilort Offline
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I'm using the Lunati 60303 in my 440 build for a '68 Dodge Sweptline. I'm reusing some pistons so my squish is terrible and compression is only going to be about 9.1-9.2:1.

I am using some closed chambered Eddy heads I bought a couple of years ago with a Performer RPM intake and a 750 Holley.

Looking forward to getting it together though. Going with a slightly tighter converter from Turbo Action.

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