So I have been told by many of the older Mopar guys that they used to regularly turn their 440 to 7200 rpm.
Is this a trait of mopar purple cams or the 440 stroke? The reason I ask if its a trait of the purple shaft is my brothers first 440 with a .474 mopar cam made good power down low but really wanted to rev 6800 7000 productively even. My first 340 I used the .484 lift cam and it too wanted to turn 6900 RPMs. Not apples to apples experience but then, I built my stroker sm block eddie heads and hughes cam. He built another 440 with eddie heads and a hughes cam. Neither will productivly pull past 6100 rpm? Seems cam related. They are quite productive from idle to 5800 6000 but really fall off after. Springs are theirs and installed to spec.

AND TO THE POINT. Im building a 440 that needs to rev productively to 6500 and yet make 350+ pound foot of torque as close to 2500 rpm as possible.
The rods are stock LYs with arp bolts,pistons are aries. Heads will likely be stock mopars ported with templates from mopar. Intake is Weiand dual plane,750 Q jet, headers mopar electonic ignition, high 9 compression.
The truck is a 4 speed ,4.56 geared,37 inch everyday tires, 33 inch for pulling, short bed 4x4 dodge.

WHY for country stock truck pulling class and daily driver pre runner truck. Yes I know those are two extremely different disciplines. SO let me know what you know please. Its been a while since Ive pulled 3 years in fact and many have stepped up as I intend also.

well, I have a 383 with a 440 stroke, and at .060 over, it's basically a .010 under 440

mine started to fall off at 6100 rpm not quite the 6500 you wanted, but I also made over 500 ft lbs at 3000 rpm. the test didn't start until 3,000 so I don't know what it was making at 2500, but I'd imagine it's got to be over the 350 you want.

I would think with a slightly different cam profile, and some head work, you could get your 350 tq @ 2500 and pull strong to 6500 rpm.

my basic build:
383 stroked to 440
OOTB eddy heads
flat top pistons/valve reliefs, zero deck
10.5:1 compression
Comp XE275HL hydro flat tappet cam
RPM intake
holley 750HP

I shift my 440 at 6000 and go thru the traps around 6400-6500. The bottom end is stock, just ARP rod bolts, the heads have been done up by my dad and larger valves installed. The cam is a mopar performance .533. I have a 5000 stall convertor and it likes leaving at 3000 and above. I wouldn't twist a mainly stock 440 to 7000 but thats just me.

ok from 1 truck puller to another

pulling vs dragracing is completely diffrent but still the same. i mean yes ive based my builds off some drag motors but with changes. unless your running a automatic in a pulling truck which takes to much power in a stock truck we dont have the pleasure of shifting. so it needs to handle high rpms.
i myself am running a 440 in my truck and turn it 7500-8000 every time down the track. with a mp .484 hyd cam. ive seen best results useing the next higher mp spring then required. but the biggest thing i have seen is balance your motor. stock rotateing [Edited by Moparts - Keep it clean]. and trw pistons seem to let loose around 7500 rpms. but with proper balanceing we turned 9800 rpms on a cast crank 440,ly rods and some domed pistons with 906 heads. feel free to pm me with any questions as we have been pulling over 25 years.

idk what your fuel rule is but you need to bump your compression up, dont beleave everyone that says 10.5 to 1 all you can run. i am at 12.5 to 1 with 93 oct fuel. next gearing you need to ditch those 4.56. i use a nv4500 5 spd with a lakewood bell which is alittle fastesr and am running 3.55 gears. but i would at least go with 4.10 or 2.55 depending on tires and tracks. also is your sled a weight transfer or does it drop the wait on you around 200 feet? this also plays a factor. with the added hp you are gonna want to upgrade to the bigger ujoints.

it has to do with the combos... on stock strokes and stock or mildy done factory heads, the MP's duration will carry the power band well. When you change that to a non stock (longer) stroke, and add some better heads, the cam has to be a bit larger to support them. On a 4" arm small block, runnning mildly ported RPMS, a cam with 250°@.050 is a mild cam. That cam may not pull past 5800. And the carbs are another deal. Mild 4" small blocks will eat up cfm. I use 870 Holleys on mine, and they get 17mpg with them. A medium sized carb on a 496 or 505" is an HP950. So add camshaft, and carb, and intake volume, and they will all run up there.

I heard the more you turn them the faster they go

You really are a smart a$$ Quick. Maybe it`s just that you`ve never had anything powerfull enuff to need those r`s. Just a thaught......

Now the truth comes out..... So, really in front of all of your fans..........how quick have you gone and how long ago?

PLENTY.........A dragster I assume?

stock rods ..anything over 6500..is wrong ! I don't care who said it..or if they got away with it !

If I was you I would build a 400 block and use the 440 crank in it so the LY rod would be long enough to allow you to have a custom, very light, piston made that will help the motor rpm and the LY rods live. The cam should be made for your application by a reputable cam company the has customers that pull in classes like yours, PM if I can help you on that.

No need to turn your 440 up past 6500rpm.

Gear right and you will have the same tire speed as someone turning 8500rpm but your engine will last.

If your turning past 6500 your engine is screaming for nothing and is no longer working.

Not knocking Noah at all but I know that some guys have different ideas on how to run their trucks and engines but gear right and you won't have problems. You want to spin the fastest you can at your engines peak power and pull off the line at your engines peak torque.

Lets say your 440 makes 500hp at 6500rpm. Maybe its only making 400hp when it is turning 7500-8000rpm. So you think your doing great cause its turning 8000 but in reality if you geared right your engine would have turned the tires the same speed at 5000rpm (or where ever the engine made 400hp) Gear so you can spin the fastest you can at your peak power (500hp)

I know your in a stock class and dont have a Pro-fab to change gears as you wish. But for us and our old 500ci (850hp) engine we could gear between 21 to 1 and 23 to 1 and have the engine turn between 6800-7500rpm which is right where we made our peak power. If we hit the rev limiter we knew we geared wrong for the track. (happened twice this year)
Oh just an interesting thing. Once we hit the rev limiter softly at a pull (7600rpm) when we had our 23 to 1 gears in. so we went to our 21's went out and the engine wouldn't get over 4000rpm. Shows how much more power or how much softer a track has to be to spin a few points faster.

Anyways dont be shy to PM if you need any help.

Your not going to turn a 440 engine with stock heads 7200+ rpm with a MP cam for sure..LOL.
That engine with a large solid cam say a MP 590 old school style will be all done by 6000-6200 maybe earlier.
With that low a compression, cam shaft will be crucial, to big, and it wont have enough torque to turn the tires over on blacktop. Not good for what your wanting to do.
In this application stock rods should be ok for 450-500 range prep'd and good bolts.
Spend the money on the heads, cam, and converter.

With stock rods, you better look them over real good.

here's one from a 383