Mopar lover and several in the stable.... 65 Ply Satellite, 12K, Street/Strip 9.41@142mph, 1.28 60'. Family Owed 30 years! This is a 100% unrestored, 40K, HEMI GTX Fully Documented! This is my 68 Charger, 80K, 1 owner, "Bullitt clone to be" 58 Ply Fury "Christine" to be......
Shot in the dark...Never know unless you try. Here goes I have a rebuilt 69 383 engine, .030 over bore, 15,000 miles with a rebuilt 727 trans (4,000 miles) Wanting to trade for a low miles 318, 340, 360 engine with overdrive trans. 383 & trans are good. Just can no longer afford the gas. 12 mph on the highway....I love Mopar...They Love The Gas
I'd be guessing that you have your foot buried in the go pedal too often... No reason for a mild 383 to be that poor unless you have 4.56 out back. The 'B' engines have plenty of torque so consider changing to a 3.23 or even a 2.94 if the curb weight isn't too high. Cruise rpm should be around 2200-2500. .
Here's some info on adapting an A518 (small block 727 based OD) to a big block. You may not want to go this route but it is an option. http://www.dodgecharger.com/forum/index.php?topic=65534.0
I would guess you're wrong about the foot being burried, unless your meaning I have a 3.23 rear end gear witt 27" tall tires & the 56 f100 weighing around 4,800 lbs.
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