Replacing a 273 motor for a 5.9 360 Motor Question

All 360s are externally balanced.This means the balancer and flexplate have application specific weights.You will need a 360 flywheel.You run your 273 flywheel,you will get bad vibrations and kill your new motor with time.A tie strap from Summit(or a peice of hardware store chain) would be a excellent idea.Your car will scoot with that engine.


You DO NOT want the 360 flywheel if it's Magnum motor. If it's not a Magnum motor, I'll sell you mine. 400 miles on it, in great shape. I bought it new from MP.

If it's a Magnum, you want the Mopar Perforamance 5.9 flywheel for these swaps. The balance holes are similar in location but NOT in size to the 360! Search the MP catalog...the 5.9 Magnum is NOT a 360!

Please clarify year before you buy a 'wheel.