4R70W Rebuild & Parts Recommendation

[BlueOvalFan67]

I’ve recently aquired a 4R70W out of a 3.8L ‘01 Mustang to be transplant into a classic mustang. I’ve broken it down for insp and found it to be in mostly good condition. I‘m planning on numerous upgrades (i.e. spiral ring, OD pin with o-ring, new OE ford direct drum, sonnax HC billet forward drum, new electronics, Jmod) and currently looking for a quality “Deluxe Master Rebuild Kit”.

I’m somewhat concerned about vendors cheaping out and sourcing less than quality parts from overseas, therefore looking for guidance on quality manufactures/parts for the following.

1. KOYO 7 PC 4R70W BEARING KIT TBK-F6.
   • I understand these trunnion bearings are USA made from a reputable company, are these the preferred…?
   • How does Sonnax’s bearing kit compare…?
2. DURABOND SEAMLESS 4R70W 15 PC BUSHING KIT TK-3.
   • Well known USA bearing manufacture. These are bi-metal seamless bearings, are these preferred over split seam…? On a different forum I believe I read these babbits gal easily, what does that say about cam bearings. So confused.
   • Are split seams that much better, who’s a good manufacture/source…?
   • Dan Gilsdork has mention bronze brass are best. Where can one source these…?
3. 1-2 & 3 Accumulators, and Reverse/Overdrive Servos
   • Looks like Ford still makes these albeit at a premium price, are there better options other than overseas crap.
   • From a little internet sleuthing seems I located a USA manufactur, National Seals. Are these equal to FORD

Any help would be appreciate, Please!

 

[Fix4Dirt]

I’ve recently aquired a 4R70W out of a 3.8L ‘01 Mustang to be transplant into a classic mustang. I’ve broken it down for insp and found it to be in mostly good condition. I‘m planning on numerous upgrades (i.e. spiral ring, OD pin with o-ring, new OE ford direct drum, sonnax HC billet forward drum, new electronics, Jmod) and currently looking for a quality “Deluxe Master Rebuild Kit”.

I’m somewhat concerned about vendors cheaping out and sourcing less than quality parts from overseas, therefore looking for guidance on quality manufactures/parts for the following.

1. KOYO 7 PC 4R70W BEARING KIT TBK-F6.
   • I understand these trunnion bearings are USA made from a reputable company, are these the preferred…?
   • How does Sonnax’s bearing kit compare…?
2. DURABOND SEAMLESS 4R70W 15 PC BUSHING KIT TK-3.
   • Well known USA bearing manufacture. These are bi-metal seamless bearings, are these preferred over split seam…? On a different forum I believe I read these babbits gal easily, what does that say about cam bearings. So confused.
   • Are split seams that much better, who’s a good manufacture/source…?
   • Dan Gilsdork has mention bronze brass are best. Where can one source these…?
3. 1-2 & 3 Accumulators, and Reverse/Overdrive Servos
   • Looks like Ford still makes these albeit at a premium price, are there better options other than overseas crap.
   • From a little internet sleuthing seems I located a USA manufactur, National Seals. Are these equal to FORD

Any help would be appreciate, Please!

in general sonnax is quite good brand. borg warner if that make anythign for your trans. i believe national is from federal mogul, good brand, but id go ford over FM, unless FM has good pricing