383 rotating assembly balance
Thread Starter
Registered User
Joined: Jul 2000
Posts: 1,428
From: Woodstock,Georgia
Originally posted by RCF925
The front of the crank is neutral balanced, The rear has to be balanced with the flywheel.
The front of the crank is neutral balanced, The rear has to be balanced with the flywheel.
Thread Starter
Registered User
Joined: Jul 2000
Posts: 1,428
From: Woodstock,Georgia
Originally posted by Dave88LX
What does this mean exactly...
If one goes w/ a 383, do they need a new flywheel? I have guys telling me this...
What does this mean exactly...
If one goes w/ a 383, do they need a new flywheel? I have guys telling me this...
Registered User
Joined: Nov 2001
Posts: 225
From: Brockton, Ma,
The old 383s were made using a 350 block, with a 400 crank and flywheel. LT1's arent done that way. They use an aftermarket crank with your flywheel. Your buddies obviously don't know much about the LT1.
Registered User
Joined: Oct 2002
Posts: 2,168
From: AACO, MD
Originally posted by BigDaddy
The old 383s were made using a 350 block, with a 400 crank and flywheel. LT1's arent done that way. They use an aftermarket crank with your flywheel. Your buddies obviously don't know much about the LT1.
The old 383s were made using a 350 block, with a 400 crank and flywheel. LT1's arent done that way. They use an aftermarket crank with your flywheel. Your buddies obviously don't know much about the LT1.
So the "balancer" is really just a dampener, and has nothing to do with balance. It's easy to get a LT1 rotating that is already balanced, and all the machine shop has to do is balance the flywheel to the rotating assy? How is this achieved?
Thanks again. I did a search but this was the only thread I could find on balancing.
Registered User
Joined: Jan 2001
Posts: 608
If the flywheel has weights like a Mcleod then thats how it's balanced, If not you either add weight by welding or take it off at the rear of the crankshaft. I just had mine balanced for a 383 with the Mcleod flywheel but there still wasn't enough weights on the flywheel so they had to add some to rear of crank.
Registered User
Joined: Oct 2002
Posts: 2,168
From: AACO, MD
Originally posted by RCF925
If the flywheel has weights like a Mcleod then thats how it's balanced, If not you either add weight by welding or take it off at the rear of the crankshaft. I just had mine balanced for a 383 with the Mcleod flywheel but there still wasn't enough weights on the flywheel so they had to add some to rear of crank.
If the flywheel has weights like a Mcleod then thats how it's balanced, If not you either add weight by welding or take it off at the rear of the crankshaft. I just had mine balanced for a 383 with the Mcleod flywheel but there still wasn't enough weights on the flywheel so they had to add some to rear of crank.