Performance ModificationsWant to talk about performance modifications for your Dodge Challenger? This is the forum for that. Anything from exhaust systems to power adders and everything in between. (Dodge Challenger Performance Modifications)
With the new Mopar aluminum 426 coming out I figured I should offer our own version. In doing this, I decided to do a 440 instead. Our 440 uses the same proven crankshaft as the 426, but with a larger 4.145" bore to achieve 440 cubic inches. When used with a ported 6.1 intake and 90mm throttle body, this combo is capable of 650hp/650tq. Why pay more for a 426 that makes 100 less hp and no warranty. Our longblocks come with a 3 year/36,000 mile warranty when installed and tuned by an authorized installer/tuner.
Authorized locations include.
Performance Werks Racing
(256)275-1464
This is not an introductory offer but an everyday low price. Longblock includes everything needed for install with the exception of the timing cover, oil pan, coil packs, and intake manifold. We can supply a ported 6.1 intake if desired. ATI Balancer of your choice also included. Due to the nature of the availability surrounding aluminum blocks and the 4-6 week delivery time on custom pistons, expect to wait 8-12 weeks once purchased. I expect this timeline to greatly decrease as blocks become more readily available.
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(7.5L) N/A Aluminum 460 By Lewis Performance Machine
635RWHP/650RWTQ
N/A ET - 10.44 @128
Best 60 Ft 1.403
9.71@143 TT Challenger Test Dummy Driven
* 509rwhp / 473rwtq thanks to PWR Heads, Cam, Intake, 100mm TB, ATI 15% UD Pulley, and LMI CAI... * Solo Mach X-3 Catback Exhaust... Custom made Black Chrome SRT8 Forged Wheels... All emblems custom Black Chromed... Solarguard 30% Tint... Side marker blackout tint... Mopar Aluminum pedal kit... DRLs On...
For as big as Denver is and with having a NHRA sanctioned track along with other smaller tracks it sure don't seem to have the shops around to do the work. I went there for my Maggie install and didn't really get a quality install job IMO. Maybe there is one and I haven't found it yet??
There isn't one that I've found. It's aggravating as hell. S'why I keep prompting Andy to set up a shop here... there seems to be no really good Mopar tuners in the area. (POKE POKE Andy! ) I have horror stories around the one I used for all my work, and Andy was right there with me helping get through it. We though we'd found a good "authorized installer" who turned out to be horrible.
Funny I never realized you were up in WY there Boatman. You should come down to one of our mini meets or come visit one of these days.
Can you post the stroke on that 426 crank you are using?
I'm guessing a forged 440ci, and a 3.6L Kenne Bell would put over 800rwhp to the tires. Holy wow, the stuff of dreams right there. That much power woudl be useless on the street.. but great at the track.
We have already seen 1000rwhp/1000rwtq from a 3.6L KB on a 426, the 440 will match that no problem and with a few psi of boost less.
I'd read that going up to 440ci can really wear on the longevity of the engine with the stroke being equal or larger than the bore.
Your combination sounds better by going with a larger bore. What do you think about the longevity of this package?
I'm in the middle of a sale on my 1969 Dodge Charger R/T SE to raise the funds for a KB 3.6L for my 2010 6.1L. Is that 650hp quoted crank, or rwhp? If it's rwhp, then I may just reconsider the KB, and give the 440 some serious thought. I wouldn't have to worry about the land rings coming apart on me down the road.
Problem is, I have the time to get the work done in early February, takes months to plan a week off work for me. It may be some time before I could get enough time to shoot the car to Mr. Norms... but I guess more time to plan.
The longevity of this motor will outlast the iron block 426 since its the same stroke but larger bore. The 426 is a 75,000 mile motor IMO and I would put the aluminum 440 in that same category until more testing is done. Theoretically it will last longer, but theory isnt always correct.
650hp is at the crank. We could do 650rwhp, but it will require more rpm, more aggressive cam, and a sheet-metal intake. It wouldnt be very streetable.
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) I have horror stories around the one I used for all my work, and Andy was right there with me helping get through it. We though we'd found a good "authorized installer" who turned out to be horrible. 
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