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Test and tune..... Broke it.....Tranny
#1852856
06/19/15 10:42 PM
06/19/15 10:42 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
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OP
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Portage,michigan
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Get car sorted out, do burnout... Stage it.... Launch it( just off idle at 1500 and revs up like in neutral. And breaks.
904
No forward gears or reverse. No noises rolling it around. Not sure what I broke
First time out this year, made some nice changes, not meant to be... Lol
Last edited by B3422W5; 06/20/15 11:44 AM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1852897
06/19/15 11:32 PM
06/19/15 11:32 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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OP
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Local guy built it who does most of the 904/727 stuff for US131 racers.
Billet servo's A&A footbbrake valve body. As far as I know otherwise stock internals.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1852926
06/19/15 11:58 PM
06/19/15 11:58 PM
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Joined: Feb 2005
Posts: 20,173
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,173
PA.
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Major bummer. Get her fixed and go get em.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Test and tune..... Broke it.....
[Re: 340_Dart]
#1852963
06/20/15 12:45 AM
06/20/15 12:45 AM
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Joined: Jan 2003
Posts: 75,004
U.S.S.A.
JohnRR
I Win
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I Win
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U.S.S.A.
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My bet is the pump ears. Should be an easy fix with the trans out Add me to the list, pump ears if it's stock.
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1852972
06/20/15 12:55 AM
06/20/15 12:55 AM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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OP
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No park either. Car rolls easily and acts likes its in neutral in all gears
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1852977
06/20/15 01:03 AM
06/20/15 01:03 AM
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Joined: Feb 2005
Posts: 20,173
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,173
PA.
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Not pump ears then. Dig deeper
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1852979
06/20/15 01:06 AM
06/20/15 01:06 AM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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OP
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Portage,michigan
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Pushed it up on the trailer and put it in park... As it was flat didn't notice it didn't hold until started putting a little tension on straps..... Oops.
Back at my store in its bay safely, now have to figure out what's broke.
Last edited by B3422W5; 06/20/15 01:07 AM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: Twostick]
#1853029
06/20/15 03:12 AM
06/20/15 03:12 AM
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Joined: Feb 2015
Posts: 2,074
CA
crackedback
top fuel
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top fuel
Joined: Feb 2015
Posts: 2,074
CA
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Sounds like the output shaft is FUBAR.
This is assuming the engine is turning but the driveshaft isn't.
Kevin Agreed, sounds as though it broke aft of the parking pawl point
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1853379
06/20/15 08:13 PM
06/20/15 08:13 PM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
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I Live Here
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Akron, Ohio
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Hopefully it's something fairly simple Don, breakage is no fun.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856053
06/24/15 05:47 PM
06/24/15 05:47 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
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OP
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Appears it broke the rear end, tore cap off. Will know for sure tomorrow 8.75, 489 case, solid spacer.
Funny I didn't hear any noticeable noise pushing it.
I pray Quicktree doesn't see this post........ Lol
Last edited by B3422W5; 06/24/15 05:48 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856070
06/24/15 06:17 PM
06/24/15 06:17 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
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Appears it broke the rear end, tore cap off. Will know for sure tomorrow 8.75, 489 case, solid spacer.
Funny I didn't hear any noticeable noise pushing it.
I pray Quicktree doesn't see this post........ Lol I didn't see a thing, but I thought you were one of the guys telling us how great they are? now you have to pull the tranny and check it also. really sorry to hear it though.
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Re: Test and tune..... Broke it.....
[Re: Quicktree]
#1856097
06/24/15 06:50 PM
06/24/15 06:50 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
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OP
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Appears it broke the rear end, tore cap off. Will know for sure tomorrow 8.75, 489 case, solid spacer.
Funny I didn't hear any noticeable noise pushing it.
I pray Quicktree doesn't see this post........ Lol I didn't see a thing, but I thought you were one of the guys telling us how great they are? now you have to pull the tranny and check it also. really sorry to hear it though. Nope not me. I ran an 8.75 in my old car. Lived a couple years at 11.70's, couple more years running 10.70's, and then when I stepped it up it grenaded and went straight to a Dana and never looked back. Gonna put it back together and hope this little 318 doesn't bust it again.... Lol I will feel like an idiot running a Dana with a 318, hope it doesn't come to that.... It's only 475 horse once I get it dialed in..... And I think I have, just need to not break anything now to find out.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856113
06/24/15 07:28 PM
06/24/15 07:28 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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OP
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Portage,michigan
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Don't think it was, no external damage, and zero leaks.... 904...
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856121
06/24/15 07:41 PM
06/24/15 07:41 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Don't think it was, no external damage, and zero leaks.... 904... check it anyway or it could be in your lap
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856123
06/24/15 07:43 PM
06/24/15 07:43 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
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OP
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Portage,michigan
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Will do. It's at a tranny guys shop I know.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856131
06/24/15 07:59 PM
06/24/15 07:59 PM
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Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Trans is probably hurt also, seen it to many times after breaking rear. Please pull trans apart for a look see.
Mopar to the bone!!!
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856133
06/24/15 08:00 PM
06/24/15 08:00 PM
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Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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Talk about guys all posting at once haha.....
Mopar to the bone!!!
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856162
06/24/15 09:05 PM
06/24/15 09:05 PM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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check the rollers and springs in the sprag
Tony
70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856233
06/24/15 10:37 PM
06/24/15 10:37 PM
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Joined: Oct 2005
Posts: 1,927
Seaford, Va
Kindafast
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top fuel
Joined: Oct 2005
Posts: 1,927
Seaford, Va
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Dang sounds like my last trip to the track. My car did make one poor pass before my spinning and then hook pass. I thought it was good until I went to launch the car and it went into what felt like a neutral . I found it still pulled a little so I tried to shift to second and it locked up completely. Found the sprag came apart and lock the rear drum. When the rear band applied it locked up. Now waiting on my new super sprag for my 727. Oh by the way mine is a 318 422 cube engine too
Last edited by Kindafast; 06/24/15 10:38 PM.
6.50 @105.26
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Re: Test and tune..... Broke it.....
[Re: Kindafast]
#1856242
06/24/15 10:53 PM
06/24/15 10:53 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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OP
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Dang sounds like my last trip to the track. My car did make one poor pass before my spinning and then hook pass. I thought it was good until I went to launch the car and it went into what felt like a neutral . I found it still pulled a little so I tried to shift to second and it locked up completely. Found the sprag came apart and lock the rear drum. When the rear band applied it locked up. Now waiting on my new super sprag for my 727. Oh by the way mine is a 318 422 cube engine too Mine is a 323 cubic inch 318 block magnum motor in my Duster that broke My old car/ motor was a 422 W5 mill Just never changed my screen name.... Lol
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: Quicktree]
#1856610
06/25/15 01:34 PM
06/25/15 01:34 PM
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Joined: Jan 2003
Posts: 75,004
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
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U.S.S.A.
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you will be lucky if the tranny case is not destroyed Not so fast there Mr. doom and Gloom ... for some odd reason the 904 is not as acceptable to the sprag woes of the 727 , but he needs to look at it anyway ...
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Re: Test and tune..... Broke it.....
[Re: JohnRR]
#1856616
06/25/15 01:40 PM
06/25/15 01:40 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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you will be lucky if the tranny case is not destroyed Not so fast there Mr. doom and Gloom ... for some odd reason the 904 is not as acceptable to the sprag woes of the 727 , but he needs to look at it anyway ... yea i over looked the 904, thanks for pointing that out Mr. Cheerful 
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856692
06/25/15 03:17 PM
06/25/15 03:17 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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Buddy of mine looking at it just sent me a picture. The axles are stripped.
Looks like only about 1/2 to 3/4 inch of the splines were engaged .
So measuring the rare ds looks like mine is 54 and an A body is 52
Sooo..... I didn't know the rear that was in the car when I bought it was out of a B body
Need to order some B body axles....... I am guessing correct axle spine engagement should be roughly 1.5 inches into the spool on both sides?????????
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856716
06/25/15 03:44 PM
06/25/15 03:44 PM
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Joined: Nov 2007
Posts: 21,822
Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,822
Kirkland, Washington
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Buddy of mine looking at it just sent me a picture. The axles are stripped.
Looks like only about 1/2 to 3/4 inch of the splines were engaged .
So measuring the rare ds looks like mine is 54 and an A body is 52
Sooo..... I didn't know the rear that was in the car when I bought it was out of a B body
Need to order some B body axles....... I am guessing correct axle spine engagement should be roughly 1.5 inches into the spool on both sides????????? Common problem. The issue is the split gear setup on MOST 8.75s. Each axle engages a side gear AND a side 'plate' that is part of the clutch assembly of the sure grip. That means of the engagement of the axle-to-side-gear strips out you go nowhere. Not only are the axle splines trashed, but so are the side gears (at least one) in the diff unit. A much better design was the one piece where by the side gear and plate are one unit, but they are rare. The side gear and plate are locked together when an axle is installed so they FUNCTION as a single piece, unless, as in your case the small amount of axle spline to side gear engagement strips out.
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Re: Test and tune..... Broke it.....
[Re: Pacnorthcuda]
#1856736
06/25/15 04:06 PM
06/25/15 04:06 PM
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Joined: Feb 2015
Posts: 2,074
CA
crackedback
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top fuel
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Buddy of mine looking at it just sent me a picture. The axles are stripped.
Looks like only about 1/2 to 3/4 inch of the splines were engaged .
So measuring the rare ds looks like mine is 54 and an A body is 52
Sooo..... I didn't know the rear that was in the car when I bought it was out of a B body
Need to order some B body axles....... I am guessing correct axle spine engagement should be roughly 1.5 inches into the spool on both sides????????? Common problem. The issue is the split gear setup on MOST 8.75s. Each axle engages a side gear AND a side 'plate' that is part of the clutch assembly of the sure grip. That means of the engagement of the axle-to-side-gear strips out you go nowhere. Not only are the axle splines trashed, but so are the side gears (at least one) in the diff unit. A much better design was the one piece where by the side gear and plate are one unit, but they are rare. The side gear and plate are locked together when an axle is installed so they FUNCTION as a single piece, unless, as in your case the small amount of axle spline to side gear engagement strips out. From his comments this is not the issue, he has a spool. Axles too short are the root issue. Sorry to read about this Don. Hope the spool isn't hurt. Pull it all down, flush out the garbage, measure and start over. Hopefully most all the junk is in the bottom section of your housing. Might be a good time to install a drain plug in the bottom of your housing.
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1856916
06/25/15 07:36 PM
06/25/15 07:36 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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Bought CORRECT length 35 spine axles and new 35 spline spool to replace the 30 spline stuff I had Dr Diff is as always a great guy to deal with Hope to get out soon and give it another try. Cass said it probably wouldn't have stripped if I had 35 spline to begin with, even with the shallow engagement. Should have listened to him the first time 
Last edited by B3422W5; 06/25/15 07:38 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1857279
06/26/15 09:55 AM
06/26/15 09:55 AM
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Joined: Jan 2003
Posts: 13,362
Marion, South Carolina [><]
an8sec70cuda
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I Live Here
Joined: Jan 2003
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Marion, South Carolina [><]
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Glad it was an easy fix. Check the trans out yet?
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
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1857333
06/26/15 11:56 AM
06/26/15 11:56 AM
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Joined: Jan 2003
Posts: 13,362
Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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Stripped axle or ring gear, doesn't matter. The engine/driveshaft rpm instantly went high when the axles stripped...it still "freewheeled".
With stripped axles, the driveshaft wouldn't stop when the car did if there was enough RPM on the motor to power through it. There has to be something connecting the driveshaft to the tire...in this case, the axles were not, so the spool kept spinning but the axles didn't.
Hope that makes sense..lol
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
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1857434
06/26/15 03:07 PM
06/26/15 03:07 PM
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Joined: Jan 2003
Posts: 13,362
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,362
Marion, South Carolina [><]
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The driveshaft is still turning the pinion which is turning the ring gear/spool. The axle splines strip out so they slow down or stop as the car coasts, but the spool will keep going if you still have your foot in it.
As soon as the splines stripped, the engine/trans/driveshaft/spool will "freewheel" b/c there's no load anymore. That's when the trans damage can occur.
He said when it broke the car pushed like it was in neutral all the time and wouldn't move under it's own power. It might as well have dropped the driveshaft, but it stripped the axle splines. Different location of the breakage, but same result.
Last edited by a9sec70cuda; 06/26/15 03:11 PM.
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
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Re: Test and tune..... Broke it.....
[Re: B3422W5]
#1857518
06/26/15 05:45 PM
06/26/15 05:45 PM
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Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451
master
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master
Joined: Jan 2003
Posts: 4,296
Chicago, IL
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Sorry to hear the news. I hate when stuff breaks! Hope you get it all sorted out asap.
2 kids and a dog
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Re: Test and tune..... Broke it.....
[Re: TonyS451]
#1857535
06/26/15 06:05 PM
06/26/15 06:05 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Sorry to hear the news. I hate when stuff breaks! Hope you get it all sorted out asap. Same here, never good and I cringe everytime I romp on mine.............. 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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