4010 final drive swap with 4020 August 06, 2018 12:23PM
Anybody can help me i’m looking to fit 4010 final drive on my 4020 for a faster ratio.Witch parts i need ?complete final drive or i can use some 4020 parts?Thank you in advance

Re: 4010 final drive swap with 4020 August 06, 2018 02:18PM
Think you have get complete the 4020 are wider then the 4010

Re: 4010 final drive swap with 4020 August 06, 2018 03:08PM
Complete, plus need to needle 3 gears to make strong enough and have billet sun gear to hold up

Re: 4010 final drive swap with 4020 August 06, 2018 11:59PM
Don't think you can "get by" with stock sun gear. We did the change and our billet ones were not here in time. We put the stock ones in, made 2 passes at NFMS.....we took the axils off to put the billet ones in and the there was a 2 spline twist

Re: 4010 final drive swap with 4020 August 08, 2018 12:06AM
Who makes billet sun gears for a 4010?

Re: 4010 final drive swap with 4020 August 08, 2018 12:20AM
I use 4010 finals on a 4020,no issues only thing you want to do is change out shims on sun gears to one's with out ears.I pull a hot farm tractor at around 1000hp.

Re: 4010 final drive swap with 4020 August 08, 2018 02:00AM
Doug Roberts

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