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Old 12-11-2001, 05:57 AM
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Post Mopar 440 options

Here's a little question so that you all can voice your engine opinions.
I'm looking to build a pretty much bullet-proof Mopar 440 with a bullet-proof 727 Torqueflight tranny. I'm looking to use the engine in an every day driver car, so I need to retain as much fuel economy as possible (yeah right!). Here's the questions. Has anyone used the Edelbrock Performer (not Performer RPM) intake? What size carb would you go with (I'm thinking 750)? I'm going to keep a fairly small cam in the engine with stock heads. Are six-pack rods worth the extra money and weight?
Thanks everyone!

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Old 12-11-2001, 05:02 PM
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I think 6 pak rods are the same as regular rods the rods that came in the 440 magnum were hi perf and the magnum also came with forged steel crank forged pistons and W2 heads.I'm kinda sure that the 6 pak engine was the same as the 440 4bbl with a fancy intake set up but I could be wrong
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Old 12-11-2001, 06:59 PM
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The 6 pack rods are alot bigger than even mag rods if you use them be sure to use the correct damper also. I've built several 440s and they are pretty stout even with a cast crank and small rods,if you want to turn much over 5 grand out of it get rid of the stock oil pick-up and go to the larger hemi style pick-up other wise it will starve for oil.
Probably the strongest running one was an old mag, stock shortblock,used 426 solid cam,and a 413 cast iron duel quad intake with a pair of afbs,727,456 gear in a 71 duster, the car ran consistant 1150s on street tires and through the mufflers plus was a real sleeper until the word got out.
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Old 02-01-2002, 09:51 PM
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Larry is right, the six pack rods are heavier than the regular 440 rods. But for your application the stock rods would be fine. Make sure you have the correct harmonic balancer for the right engine. Before 1974, 440's had forged cranks and are internally balanced, later 440's have cast cranks and are externally balanced. The externally balanced cranks have a counterweight on the balancer and on the torque converter. Make sure you have the right balancer and torque converter for your specific crank or you will have severe vibration! A good stock rebuild with attention to detail and a mild cam with 750 to 800 cfm carb will work fine. Also the 727 torqueflite transmission is one of the most simple and bulletproof transmissions made. They used these for years behind 361, 383, 400, 413, 426wedge,440 and 426 HEMI"S. When was the last time you ever heard of one of these breaking. NEVER! I actually put one into reverse (By mistake)when trying for neutral at over 100 mph without damaging it. The tranny lasted over another year and was still working when I sold the car. GOOD LUCK ON YOUR PROJECT!
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Old 02-02-2002, 04:57 AM
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I didn't know there was any such thing as a non-bullet proof mopar motor.
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