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Re: 727 for SS hemi [Re: sixpacksteve] #2467920
03/17/18 11:53 PM
03/17/18 11:53 PM
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Hot 340 Offline
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Originally Posted By sixpacksteve
Doug, i glad you had great luck. i've been thru aleast a dozen 727 trans, i have 200 less HP and a coan trans now. has been rebuilt several times.
I personally believe if you go more than 600+hp 727 Not the way. Im happy for the guys that have been.
Someone needs a new tranny guy.

Re: 727 for SS hemi [Re: Hot 340] #2467922
03/17/18 11:56 PM
03/17/18 11:56 PM
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NW Pa.
KD800X Offline
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Originally Posted By Hot 340
Originally Posted By sixpacksteve
Doug, i glad you had great luck. i've been thru aleast a dozen 727 trans, i have 200 less HP and a coan trans now. has been rebuilt several times.
I personally believe if you go more than 600+hp 727 Not the way. Im happy for the guys that have been.
Someone needs a new tranny guy.


I agree! I know guys going 8.60's in full body cars with a 727's.

Last edited by KD800X; 03/18/18 12:00 AM.
Re: 727 for SS hemi [Re: kyhemi-dart] #2467970
03/18/18 02:27 AM
03/18/18 02:27 AM
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Great Neck,LI,new york
hemi-itis Offline
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I will stay with the 727 because it's a streeter,I seem to be ok with iT?


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: 727 for SS hemi [Re: kyhemi-dart] #2468019
03/18/18 10:29 AM
03/18/18 10:29 AM
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A shed in England
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A shed in England
Almost 950ft/lb here. Only time it's broke has been when we took some teeth off the ring gear (Dana 60). Broke the O/P shaft and rolled the sprag. It's got a lot of aftermarket stuff inside, nothing lightened just all the H/D steel stuff you can get and has worked great, although now I've probably jinxed it laugh


'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: 727 for SS hemi [Re: kyhemi-dart] #2468091
03/18/18 01:44 PM
03/18/18 01:44 PM
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kentucky
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kyhemi-dart Offline OP
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Sounds like plenty of you guys are doing just fine and making lots of power with a 727

Re: 727 for SS hemi [Re: Hot 340] #2468113
03/18/18 02:38 PM
03/18/18 02:38 PM
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Bend,OR USA
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Originally Posted By Hot 340
Originally Posted By sixpacksteve
Doug, i glad you had great luck. i've been thru aleast a dozen 727 trans, i have 200 less HP and a coan trans now. has been rebuilt several times.
I personally believe if you go more than 600+hp 727 Not the way. Im happy for the guys that have been.
Someone needs a new tranny guy.
iagree
Who knows what used parts have been through before the average tranny builder reuses them work
I like new good race parts from Dave Smith in all of my all out race trannys that he builds for me up work

Last edited by Cab_Burge; 03/18/18 02:38 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 727 for SS hemi [Re: kyhemi-dart] #2468128
03/18/18 03:24 PM
03/18/18 03:24 PM
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Michigan
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That's half the battle building a good trans - knowing what's good and what's not.
Guys can buy the "build a trans" book but that only gets it assembled. Using parts on the verge of failure only gets you limited life - guys that know what to look for don't use those parts. Starting with a good core takes a lot of risk out of the build.

Re: 727 for SS hemi [Re: kyhemi-dart] #2468520
03/19/18 11:47 AM
03/19/18 11:47 AM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
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Marion, South Carolina [><]
I'm at about 1100 hp w/ a 727 in a 3900 lb car. 8.90s at 150 mph.
Billet steel drum, TA transbrake (no LBA), A&A 5 pinion planetary, bolt in sprag, cast deep pan, your normal good clutches, etc. and that's it. The rest is stock stuff. Knock on wood, it's been good so far.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: 727 for SS hemi [Re: A727Tflite] #2468569
03/19/18 01:42 PM
03/19/18 01:42 PM
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Posts: 9,791
MI, usa
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Originally Posted By Transman
That's half the battle building a good trans - knowing what's good and what's not.
Guys can buy the "build a trans" book but that only gets it assembled. Using parts on the verge of failure only gets you limited life - guys that know what to look for don't use those parts. Starting with a good core takes a lot of risk out of the build.


Exactly. There is a difference between a builder and aN assembler. This stuff is old. Some wear in the sealing areas, where rotating parts ride, etc. Most of the time the stuff us pretty good, but not always. Mine needed a reaction shaft support this freshen. Not broke, just worn in the sealing ring land.
Doug

Re: 727 for SS hemi [Re: kyhemi-dart] #2468675
03/19/18 05:41 PM
03/19/18 05:41 PM
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kentucky
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kyhemi-dart Offline OP
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Well I went and picked up the trans this morn, price was def right and he threw in a new case/tail shaft and several other small parts. I’m sure it’ll be just fine for us. You guys are making tons more power/tq and weigh more than we will so that def makes me feel better lol

Re: 727 for SS hemi [Re: dvw] #2468950
03/20/18 07:52 AM
03/20/18 07:52 AM
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Mo.
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Originally Posted By dvw
Originally Posted By Transman
That's half the battle building a good trans - knowing what's good and what's not.
Guys can buy the "build a trans" book but that only gets it assembled. Using parts on the verge of failure only gets you limited life - guys that know what to look for don't use those parts. Starting with a good core takes a lot of risk out of the build.


Exactly. There is a difference between a builder and aN assembler. This stuff is old. Some wear in the sealing areas, where rotating parts ride, etc. Most of the time the stuff us pretty good, but not always. Mine needed a reaction shaft support this freshen. Not broke, just worn in the sealing ring land.
Doug
iagree..100% I have a few freshen under my belt (1 727,1 46h)both with good cores. I'm no expert for sure. I guess I luck out. wave

Re: 727 for SS hemi [Re: kyhemi-dart] #2469169
03/20/18 03:22 PM
03/20/18 03:22 PM
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fredericksburg,va
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Back in the 60s early 70s most all funny cars used TFs, how much HP did a blown nitro Hemi make then?

Re: 727 for SS hemi [Re: cudaman1969] #2469194
03/20/18 03:48 PM
03/20/18 03:48 PM
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Bend,OR USA
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Originally Posted By cudaman1969
Back in the 60s early 70s most all funny cars used TFs, how much HP did a blown nitro Hemi make then?

I am more interested in how many blew the trannys up and how many drivers got hurt from that work
Ask Don Garlits about using automatic tranny parts behind a Top Fuel Dragster scope puke down
That was back when racers and tranny builders where making Clutch Flyte, Clutch 400 and Clutch C6, no converters either work
Lenco did the needed research and development and took over that market on making safe drag racing trannys with clutchs up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 727 for SS hemi [Re: kyhemi-dart] #2469224
03/20/18 04:50 PM
03/20/18 04:50 PM
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Michigan
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Michigan
There is no question that a properly built 727 with even stock parts can withstand 1000HP and torque. The issue is the builder, the parts and how long you expect it to live.

We have several cars in the area making this power ( backed by dyno sheets not power calculators like Wallace ) that have lived long lives with stock parts.

As for funny cars back in the day - clutch is harder on the trans (clutchflite) but those cars were much lighter, tires and tracks are not what like are today. Starting line inertia is what kills some of the parts.

Re: 727 for SS hemi [Re: kyhemi-dart] #2469445
03/20/18 11:31 PM
03/20/18 11:31 PM
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San Diego CA
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65 Hemi Offline
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San Diego CA
Pro Trans vote here. My is behind a 605” Hemi in a all steel 65 Coronet. Very happy with it.


Doug

MOPAR or NO CAR!!!
1965 Dodge Coronet soon a 6.1 Hemi with a Magnson blower 810 hp on pump gas
1964 Dodge Polara 582" Indy alum Block 426-1RA heads,
1933 Plymouth PE all Steel, LT1 4L60E
1959 Plymouth Savoy 33,000 mile survivor
Old cars are never done. They are ongoing projects!
Re: 727 for SS hemi [Re: cudaman1969] #2469460
03/20/18 11:54 PM
03/20/18 11:54 PM
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Posts: 1,310
Charlotte, NC
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LSP Offline
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Originally Posted By cudaman1969
Back in the 60s early 70s most all funny cars used TFs, how much HP did a blown nitro Hemi make then?


They called them torchflites back then too lol.

I'd say about 2000hp back then

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