High RPM

[D69charger]

How high is revving
too high for a 440 stroker.... 4.15 stroke?

[BSB67]

Are you asking at what rpm will there be catastrophic failure of the rotating assembly?  Is this a constant rpm application?  What is your application?  and why are you asking?

How much power you are making matters, and the parts you use make the difference.

[c00nhunterjoe]

As russ said, parts and application are the key here. The 572 launches at 6k and turns 7600 through the traps but it was purpose built for it and done it for 12 years now with only freshen ups with 1 exception of a failed rod bolt due to the circumstances beyond our control. I doubt a 440 source kit would last to that kind of abuse.

[BSB67]

As russ said, parts and application are the key here. The 572 launches at 6k and turns 7600 through the traps but it was purpose built for it and done it for 12 years now with only freshen ups with 1 exception of a failed rod bolt due to the circumstances beyond our control. I doubt a 440 source kit would last to that kind of abuse.

What cylinder heads?

[c00nhunterjoe]

As russ said, parts and application are the key here. The 572 launches at 6k and turns 7600 through the traps but it was purpose built for it and done it for 12 years now with only freshen ups with 1 exception of a failed rod bolt due to the circumstances beyond our control. I doubt a 440 source kit would last to that kind of abuse.

What cylinder heads?

440-1's with port work. I do not have flow numbers, just the dyno sheets. Changing it this winter to the 572-13s. Should really wake it up.

https://youtu.be/2ciFpx9QaxQ

[D69charger]

440 bored .40 with 4.15 stroke crank... edlebrock rpm heads, comp cam thumper series hyd roller, ross racing pistons.  The reason i asked is because i accidentally bumped neutral when shifting it to drive and buzzed it to 7000 rpm.  I dont think i hurt anything but this being my first mopar im not sure what mopar big blocks can handle for rpm before castrophic failure

[garner7555]

If it didn't blow apart then you may very well be fine.  HAHA   If it were me then I would just keep a close eye on the oil pressure for a short while to make sure that one of the bearings wasn't damaged (spun slightly).   If it's not making strange noise and oil pressure stays consistent then I wouldn't worry, however I would consider a new shifter or rev limiter, perhaps both.       

[BSB67]

you're fine.

Plus, what you do otherwise?

[c00nhunterjoe]

The hydraulic cam will probably float before you do any bottom end damage. Install a rev limiter.

[D69charger]

it was holding 80 psi oil pressure and the motor was acting very responsive.  I just have a noise coming from somewhere.  Can the torque converter bolts rattle loose?

[BSB67]

Can the torque converter bolts rattle loose?

Yes

[D69charger]

Had a friend come help me track down the noise and it is a failed hydraulic lifter.   

[c00nhunterjoe]

Common problem any more. What brand?

[68-XS29]

I had a failed hydraulic lifter that was brand new from a mopar purple shaft kit just this spring. Fortunately it happened to be the #1 cyl exhaust lifter, so I was able to remove the distributor and fish it out and a new one in with a telescoping magnet through the distributor hole without removing the intake.

[D69charger]

Common problem any more. What brand?

Comp.