Where to buy steel 390 flywheel?

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   I am in need of an internal (zero) balance steel flywheel for my 1970 390 build (4.5" crank flange). I've had a Hays on order through Summit for over a month and a half. Same with Jegs, has to ship from manufacturer (I purchased through Ebay since it said 10 available and would ship in two days, but cancelled when I received an email stating estimated shipping date was a month later). Are the Centerforce or any others shipped in 0 balance? It's the last part I need before dyno time and looking for something asap. Thanks in advance for any help!

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n2ojoe Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: May/04/2016 Location: Tecumseh, MI Status: Offline Points: 717	Post Options Post Reply Quote n2ojoe Report Post Thanks(0) Quote Reply Topic: Where to buy steel 390 flywheel? Posted: Feb/14/2017 at 11:24pm
	I am in need of an internal (zero) balance steel flywheel for my 1970 390 build (4.5" crank flange). I've had a Hays on order through Summit for over a month and a half. Same with Jegs, has to ship from manufacturer (I purchased through Ebay since it said 10 available and would ship in two days, but cancelled when I received an email stating estimated shipping date was a month later). Are the Centerforce or any others shipped in 0 balance? It's the last part I need before dyno time and looking for something asap. Thanks in advance for any help!

Ken_Parkman Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1814	Post Options Post Reply Quote Ken_Parkman Report Post Thanks(0) Quote Reply Posted: Feb/15/2017 at 6:42pm
	Hey Joe I used a Jeep 6 cyl Mcleod I think. It was zero balance, and had the 4.5" pilot for the crank which I really did not understand. I never worked with a 6 but I thought they would be the same as the 8. May have been a mistake on their part. I was using a later crank so had to machine it a touch so it piloted correctly on the ID.

ccowx Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Nov/03/2010 Location: Yukon Status: Offline Points: 3510	Post Options Post Reply Quote ccowx Report Post Thanks(0) Quote Reply Posted: Feb/15/2017 at 7:38pm
	Haven't dealt with this directly, but I recall that you can use any V8 flywheel, if it is rebalanced. Others may chime in to tell me I am an idiot, but I am used to that! I hope that helps! Chris

n2ojoe Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: May/04/2016 Location: Tecumseh, MI Status: Offline Points: 717	Post Options Post Reply Quote n2ojoe Report Post Thanks(0) Quote Reply Posted: Feb/15/2017 at 9:57pm
	Ken, that may be a good alternative to the pricey SFI spec flywheels. I have a stock 390 external balance flywheel that I'd hate to cut on. I'm just putting together somewhat of a "budget" engine to take to the pure stock drags, so I probably don't need an SFI approved "race" piece. (Edit: though my feet may feel better if it is) Edited by n2ojoe - Feb/15/2017 at 10:36pm

jpnjim Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Nov/25/2007 Location: New England Status: Offline Points: 2752	Post Options Post Reply Quote jpnjim Report Post Thanks(0) Quote Reply Posted: Feb/17/2017 at 3:55am
	I don't know if I'm right or wrong here, but I would check out 4.0L six cylinder flywheels in addition to the earlier carbureted 6 flywheels. The later 4.0L 6's have the ring gear repositioned to allow the 4.0L's compact gear reduction starter to be used. The late model starter may or may not be good for your application, but worth looking in to just the same if you're going with an L6 flywheel anyway.
	71 P-code 4spd Javelin/AMX some Jeeps and some Fords