5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

331 balancer and flywheel

Thread Tools
 
Search this Thread
 
Old 04-19-2007, 06:30 PM
  #1  
Jersey5.0
1st Gear Member
Thread Starter
 
Jersey5.0's Avatar
 
Join Date: Sep 2005
Location:
Posts: 67
Default 331 balancer and flywheel

My block is going to the machine shop in the next few weeks to be cut for the .030" over pistons as well as block notching if need be. He is also going to balance the assembly if I bring him the flywheel, crank, and balancer. I am at a loss for which balancer and which flywheel I should be getting. I have heard I can use the same spec flywheel that came off the 302, but I'm looking for input on other options, but as far as the balancer, I don't have the slightest clue.

Any help would be greatly appreciated.
Jersey5.0 is offline  
Old 04-19-2007, 07:53 PM
  #2  
BlessedHellride
4th Gear Member
 
BlessedHellride's Avatar
 
Join Date: Apr 2007
Location: DeRidder, Louisiana
Posts: 1,184
Default RE: 331 balancer and flywheel

I assume you are buying an aftermarket crank that has to be balanced. If so then yes, all of your 50.5oz stuff will work. it may cost more but would be easier in the long run because everything will bolt up as it was the stock crank in the block.
BlessedHellride is offline  
Old 04-20-2007, 12:12 AM
  #3  
94StinkinLincoln
5th Gear Member
 
94StinkinLincoln's Avatar
 
Join Date: Dec 2006
Location: louisiana
Posts: 2,763
Default RE: 331 balancer and flywheel

my 331 did not have to be notched...when mine got balanced the old flywheel was reused and i needed a different oz flywheel...it was $50.
94StinkinLincoln is offline  
Old 04-20-2007, 12:36 AM
  #4  
BlessedHellride
4th Gear Member
 
BlessedHellride's Avatar
 
Join Date: Apr 2007
Location: DeRidder, Louisiana
Posts: 1,184
Default RE: 331 balancer and flywheel

Not to hijack your thread here but ... Have you taken that 331 of yours to the track or dyno? If so post some numbers or pm me with them. I went by the machine shop today and watched the guy cut 6 holes outta 8 30 over. Fixin to assemble a 331 myself.
BlessedHellride is offline  
Old 04-20-2007, 12:46 AM
  #5  
94StinkinLincoln
5th Gear Member
 
94StinkinLincoln's Avatar
 
Join Date: Dec 2006
Location: louisiana
Posts: 2,763
Default RE: 331 balancer and flywheel

i should have the motor ready sunday to put in my car...im guessing 400-425 fwhp maby 450 after the tuneing is done.
94StinkinLincoln is offline  
Old 04-20-2007, 12:55 AM
  #6  
FullAuto
5th Gear Member
 
FullAuto's Avatar
 
Join Date: Jan 2006
Location:
Posts: 2,760
Default RE: 331 balancer and flywheel

What brand of kit is it? Most strokers are made to go 28oz.
FullAuto is offline  
Old 04-20-2007, 12:58 AM
  #7  
94StinkinLincoln
5th Gear Member
 
94StinkinLincoln's Avatar
 
Join Date: Dec 2006
Location: louisiana
Posts: 2,763
Default RE: 331 balancer and flywheel

mine is eagle...mine was 28oz...stock is 50oz.
94StinkinLincoln is offline  
Old 04-20-2007, 01:00 AM
  #8  
FullAuto
5th Gear Member
 
FullAuto's Avatar
 
Join Date: Jan 2006
Location:
Posts: 2,760
Default RE: 331 balancer and flywheel

I was asking the original poster since the second guy said to do it at 50oz.
FullAuto is offline  
Old 04-20-2007, 01:33 AM
  #9  
BlessedHellride
4th Gear Member
 
BlessedHellride's Avatar
 
Join Date: Apr 2007
Location: DeRidder, Louisiana
Posts: 1,184
Default RE: 331 balancer and flywheel

If he bought an unbalanced kit, he has the option to balnce it any way he wants. There is three choices. 28, 50 or you could go with a neutral balance (0). I have been told that internal or neutral balance was the way to make the strokers last in a stock block.
BlessedHellride is offline  
Old 04-20-2007, 01:52 AM
  #10  
my77stang
6th Gear Member
 
my77stang's Avatar
 
Join Date: Dec 2006
Location: Citrus County, FL
Posts: 8,007
Default RE: 331 balancer and flywheel

yeah neutral balance is best, but 28oz or 50 is ok...... i would grab a new balancer at the least since the rubber on the original balancer is most certainly due to be replaced. the professional products balancers have a removable weight so you can make it 28/50/zero
my77stang is offline  


Quick Reply: 331 balancer and flywheel



All times are GMT -5. The time now is 06:22 AM.