5.3 Crank balancing question
#1
Teching In
Thread Starter
iTrader: (1)
Join Date: Mar 2008
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I have a gen 3 5.3 and I'm putting gen 4 rods and pistons in it. To have the gen 3 crank rebalanced, it'll cost $300. A used gen 4 5.3 crank is $150. I'm thinking it would be cheaper to just swap in a gen 4 crank too and change the reluctor wheel to a 24t. That's assuming all of the gen 4 cranks are balanced the same, which they should be close because all of the pistons and rods weight the same from engine to engine. Thoughts?
#2
TECH Junkie
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I have a gen 3 5.3 and I'm putting gen 4 rods and pistons in it. To have the gen 3 crank rebalanced, it'll cost $300. A used gen 4 5.3 crank is $150. I'm thinking it would be cheaper to just swap in a gen 4 crank too and change the reluctor wheel to a 24t. That's assuming all of the gen 4 cranks are balanced the same, which they should be close because all of the pistons and rods weight the same from engine to engine. Thoughts?
Be warned... a Gen4 crankshaft from a 6.0L or 6.2L will not have a similar balance.
No matter which crankshaft you select, there should always be a re-balance performed.
Can you get away with finding a Gen4 5.3L crankshaft that matches and use it with out a re-balance... Yes, It is just not ideal.
#4
TECH Junkie
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I can not count the amount of rotating assemblies that I have balanced. However generally the mass of the factory LSx connecting rods does not vary greatly... I'm sure many, many people here do this, an get away with perfectly fine.
That does not make it proper procedure for engine rebuilding.
The following users liked this post:
Homer_Simpson (09-19-2023)
#7
TECH Addict
iTrader: (1)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Originally Posted by Kfxguy
Can you post back later on and let us know your results and what you ended up doing? and the power your making and RPM. I'm in the same situation.
The following users liked this post:
JoshuaGrooms83 (08-27-2020)
Trending Topics
#8
Teching In
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Do you have the gen 3 rod and pistons you pulled out? If so just weigh it to see how much a difference it is vs your gen 4 rod and pistons to see how close you are.