What's a good 727 rebuild kit for the money

[gtmopar]

Going to tackle a rebuild on my 727 and I know there are several out there on the market. It will see some strip use and probably north of 550 hp it's going to need to handle. If more info is needed please let me know. Thanks

 

[fishy68]

Up to 550 HP I use good quality stock replacement clutches and steels. TransStar puts out a decent kit. More than 550 hp I upgrade the clutch plates to either Borg blue plates or Red Eagles and use koleen coated steels. Red Eagle linings on the bands too. Not sure if you'll find a complete kit with them but Andrews racing, Rick Allison's A&A, and Cope Racing Trans. are places I'd look. You also need a bolt in sprague, reinforced front band strut, billet rear servo, and either a manual valve body or a Trans-go shift improver kit for yours. If you use a manual valve body make sure and use the front band apply lever it calls for. If you use the Trans-go kit (or any other kit for that matter) do not use a 5.0 kickdown lever. Use a 3.8 or 4.2 lever. For the level your pushing it too figure on replacing any normal wear item such as the belleville spring and cushion spacer (make sure and use a steel cushion spacer, not the plastic one the later trans. used), all thrust washers, bushings, and a set of HD pump gears. You'll need an assorment of selective snap rings to set the clutch plate clearances and shims for the rear gear train to tighten it up. If you don't already have it buy this book. It has a ton of great info on 727's. I set my clutch plate clearanses slightly loser than he recommends but that's it.

[ame="http://www.amazon.com/Torqueflite-A-727-Transmission-Handbook-HP1399/dp/1557883998/ref=sr_1_1?ie=UTF8&qid=1349152686&sr=8-1&keywords=torqueflite"]Torqueflite A-727 Transmission Handbook HP1399: How to Rebuild or Modify Chrysler's A-727 Torqueflite for All Applications: Carl Munroe: 9781557883995: Amazon.com: Books[/ame]

 

[gtmopar]

Excellent you have reiterated everything that I was thinking. Thank you sir I appreciate the info. This will be my first 727 but I've been doing a ton of homework and I'm a good wrench so I think all should be good. The bolt in sprague I'm a little unsure of but I'll read up and figure out what I need to do. Does anything need to be machined to convert to that? Thanks again

 

[lucky13]

What about a billet steel front drum? Around what hp level is that needed?

 

[gtmopar]

I'm looking into the billet drum but I think the OE ones are stout enough to handle what I'm going to do. When I put the blower motor back in then I might go with the billet drum but until then ill probably leave it alone. It's funny a buddy of mine has a fairly stock 727 and he's running close to 900 horse and he hasn't had any issues. I'm not that lucky. Ma mopar sure made the 727 tough as nails!

 

[fishy68]

Excellent you have reiterated everything that I was thinking. Thank you sir I appreciate the info. This will be my first 727 but I've been doing a ton of homework and I'm a good wrench so I think all should be good. The bolt in sprague I'm a little unsure of but I'll read up and figure out what I need to do. Does anything need to be machined to convert to that? Thanks again

Glad to help. The bolt in sprague is an easy conversion. No machining at all. Just have to drill the existing holes where the governor support bolts up the rest of the way through and press in the spragues outer ring and use the longer bolts they send to bolt it in. All it does is it keeps it from spinning in the case. If you plan on putting in a blower engine any time you might as well upgrade the front drum to a billet now like Lucky suggested. It's good insurance to have any time. 727's are tough but your friend is lucky at the level he's pushing it. Someone must have done a good job building it too.