727 Transmission Rebuild

david hill

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I am about to order a master overhaul kit for my RB block 727. ebay lists a wide variety of manufactures offering replacement parts. Who are reliable and who are questionable. This is a pre 71 727 transmission. This rebuild will include a rebuilt front pump and torque convertor. All seal rings, o rings, bands and bushings will be replaced. Who is a reputable company to buy from. Its been a few years since my last 727 rebuild, I just want some up to date info. Thanks
 

jcslocum

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I rebuilt my 727 last winter. I will have to dig thru some paperwork to find who I bought from. Im very satisfied with the parts and price.

Update
I purchased from Norcal Trasmission. They had everything I wanted. I can send you a list of parts if you want.
 
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MONC440

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For stock rebuild I like transtar. If you are looking to add extra clutch discs and steals for extra holding power I order from PATC they have performance kits that include red eagle clutches and kolene steals and Kevlar bands. I have used PATC parts to build 727’s to handle 800+ hp and 904’s up to 500 hp. You can also pick and choose what parts you want to upgrade.
 

david hill

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I rebuilt my 727 last winter. I will have to dig thru some paperwork to find who I bought from. Im very satisfied with the parts and price.

Update
I purchased from Norcal Trasmission. They had everything I wanted. I can send you a list of parts if you want.
Any receipts and part numbers will be most beneficial. By the way empty your inbox because it is full.
 

Moseman

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I am building a 77 era 727. I ordered the full kit from Monster Trans. It is a good kit and has everything you need. I then added upgraded planetaries from A&A. (ggod people to deal with) Instead of brass thrust bearings their upgraded planetaries have small roller bearing thrust bearings. But, this is probably way more than what you need behind a stock engine. My engine is a 512, so I need something to stand up to the torque from that.
 

jcslocum

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Here is what I bought for my rebuild. My mailbox is empty now. Didn’t have any idea it was full!

6AA4FEC6-5DD6-4D5B-9E87-3223BAEE4425.jpeg
 

david hill

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jcslocum

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I was upgrading my 1965 727 from the small input shaft to the later design when I did the rebuild. I needed this in order to get a newer design torque converter because you really can't but the old ones anymore and I wanted to up the stall speed a bit. I searched for a low mileage motor home 727 or pickup trans and found a MH one with about 45K miles on it. from that I used the input shaft, pump, sprag and the heavier planetary gears. All of these parts were in great shape and save me a small fortune in part costs.

Here are the improved- 4 posts/4 gear vs original 3 post/3 gear planetary gears:

BCXC3846.JPG


OGJJ5392.JPG
 
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