904 st-10 nos - Chevelle Tech
Transmission & Driveline Transmissions and Differentials

 5Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 17 (permalink) Old Sep 9th, 17, 11:19 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
904 st-10 nos

I have a chance to buy a over the counter NOS ST-10 trans. This is the 904 midplate trans. 288 first gear y code trans. Nickel gearset. Brand new never used. 1500 bucks

Would this hold up to a 600 ft lb 496 BB? Street car with drag radials 350 rear ratio 9 inch ford. No track time.

Like to go back to stick and pull the 400 turbo. Should be a direct bolt in including driveshaft.

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old Sep 10th, 17, 2:52 AM
Senior Tech Team
Vince
 
Join Date: Sep 2006
Location: Los Lunas, NM
Posts: 8,530
Re: 904 st-10 nos

i think the 496 will break it
the torque rating is only 375-450#/ft
it would work good till you stress it too hard with traction

68-Malibu 427bbc/t4oo/3.73-12bolt/pro charger f1-r
VinceS427bb is offline  
post #3 of 17 (permalink) Old Sep 10th, 17, 10:08 AM
Senior Tech Team
jerry
 
Join Date: Dec 2006
Location: portland oregon
Posts: 7,179
Re: 904 st-10 nos

When you say "no track time", does that mean you're launching at 3,4,or 5k rpm on the street. If so, you'll have issues with that trans. If you're pulling away hard off idle or high idle, then it'll be fine.
cheveslakr is offline  
 
post #4 of 17 (permalink) Old Sep 10th, 17, 10:28 AM
Tech Team
 
Join Date: Oct 1998
Location: Waukesha WI
Posts: 392
Re: 904 st-10 nos

If it's for a street car without slicks it would prolly be fine. You'll likely hate the "Y" gearset though. The 1-2 gear spread is almost 40%. The "CC" is much better at 34%. At first glance I didn't think $1500 was much of a deal, but a quick look at Jeg's shows the new aluminum Richmond's @ $2150. Guess I haven't bought any trans' for a while. I bought my ST10 new for $440. If you're really interested in a four gear check with Jody. He can prolly set you up with one of his supercase whizz bang Muncie's.
StevenS likes this.
Gary Anderson is online now  
post #5 of 17 (permalink) Old Sep 10th, 17, 10:30 AM
Lifetime Premium Member
Doug
 
Join Date: Jul 2002
Location: Md. US
Posts: 4,566
Re: 904 st-10 nos

Borg Warner Second Design ST
I have an AS9 T-10Y Powerbrute,I believe it is the same trans you are talking about.I had it in my street strip Elky briefly,when I was afraid my M-20 wouldn't hold up.Only ran it a short time,because I fell into a super deal on my G-Force 101A I couldn't turn down.
Would it hold up with drag radials,600tq on the street?Probably,if it wasn't abused with wheel-hop launches,or 5 grand clutch dumps.
Just don't put 12psi slicks on it,and launch it on a sticky dragstrip.
StevenS likes this.

70 SS 454 LS-5 M-22 Bornwith Drivetrain-Sold New Baldwin Chevrolet
72 SS 454 El Camino W Code-427 4spd.
60',1.46, [email protected] [email protected]

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Elky at Cecil
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Chevelle Resto Pics
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
DougA is offline  
post #6 of 17 (permalink) Old Sep 10th, 17, 11:29 AM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
Re: 904 st-10 nos

375 -450 ft pounds. Isnt this for the aluminum case ST10? This is a 904 nodular case and nickel gears. I was under the impression that this is the aftermarket St10 which is rated to 550 - 600 ft lbs not the gm version which is weaker. These were sold at speed shops back in 1975. I maybe wrong ofcourse.

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
post #7 of 17 (permalink) Old Sep 10th, 17, 12:01 PM
Senior Tech Team
Vince
 
Join Date: Sep 2006
Location: Los Lunas, NM
Posts: 8,530
Re: 904 st-10 nos

Quote:
Originally Posted by StevenS View Post
375 -450 ft pounds. Isnt this for the aluminum case ST10? This is a 904 nodular case and nickel gears. I was under the impression that this is the aftermarket St10 which is rated to 550 - 600 ft lbs not the gm version which is weaker. These were sold at speed shops back in 1975. I maybe wrong ofcourse.
https://www.chevelles.com/forums/152-...er-t-10-a.html
looks like the the torque rating is much higher than the 375-450lb/ft that i was recalling...

Aftermarket for GM
AS9-T10 "Power Brute" with iron case and nickel gears Borg-Warner also sold a version of this transmission through speed shops under the "Power Brute" name. It had a 904 nodular iron case and 9310 Nickel alloy gears. The gears can be identified by a small dimple drilled into the side of each gear. Most of these version were designed primarily for drag racing and had a very low first gear. The theory at the time was to use the low first gear to launch a car quickly.

StevenS likes this.

68-Malibu 427bbc/t4oo/3.73-12bolt/pro charger f1-r
VinceS427bb is offline  
post #8 of 17 (permalink) Old Sep 10th, 17, 2:05 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
Re: 904 st-10 nos

Thanks Vince I did a search and did read that thread. Hard to find any real answers on how strong the non GM ST10s really are. The one I am looking at is a 1975 NOS.

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
post #9 of 17 (permalink) Old Sep 10th, 17, 3:29 PM
Tech Team
Chris
 
Join Date: Apr 2010
Location: Calgary, Alberta, Canada
Posts: 982
You will be fine.

I am running a aluminum case with steel mid plate super t10 (2.64 first) on the street behind my 502. It has Micky Thompson drag radials with 10psi and a mcleod ceramic clutch.

4500rpm clutch dumps are not a problem.

Biggest thing is that with this much power on the street you really cant load it hard enough to brake it. Track time, well I do have a backup already

A lot of people will say they are good in full weight Chevelle a up to 11.5 quarter passes.
StevenS likes this.

1968 Beaumont
540 BBC + 15psi Boost via Single Garrett GTX
Stock looking, and fairly stock sounding
HP and ET not determined yet!

Boosted Beaumont Build:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
GoFast Beaumont is offline  
post #10 of 17 (permalink) Old Sep 10th, 17, 4:03 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
Re: 904 st-10 nos

Well dont have cash for a tko and really do not want to cut my floor. So this looks to be a good option since its basically new. If I remember correctly since I have a turbo 400 this should go right in with driveshaft and yoke. Clutch pedals are still in car and I have the zbar, linkage, and fork. Will need a shifter, scattershield and clutch. I have new floor installed when frame off was done. So I should find the factory hump for trans tunnel. Fun Fun

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
post #11 of 17 (permalink) Old Sep 10th, 17, 4:11 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
Re: 904 st-10 nos

Quote:
Originally Posted by cheveslakr View Post
When you say "no track time", does that mean you're launching at 3,4,or 5k rpm on the street. If so, you'll have issues with that trans. If you're pulling away hard off idle or high idle, then it'll be fine.
Jerry mostly nail it from a roll. If I ever take to the track (well no mercy) so thats way I really dont go. LOL

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
post #12 of 17 (permalink) Old Sep 10th, 17, 4:14 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
Re: 904 st-10 nos

Quote:
Originally Posted by Gary Anderson View Post
If it's for a street car without slicks it would prolly be fine. You'll likely hate the "Y" gearset though. The 1-2 gear spread is almost 40%. The "CC" is much better at 34%. At first glance I didn't think $1500 was much of a deal, but a quick look at Jeg's shows the new aluminum Richmond's @ $2150. Guess I haven't bought any trans' for a while. I bought my ST10 new for $440. If you're really interested in a four gear check with Jody. He can prolly set you up with one of his supercase whizz bang Muncie's.
Gary

I remember those days when they were 440.00 I really dont want a muncie with straight cut noisey gears. See what old age does to you.

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
post #13 of 17 (permalink) Old Sep 10th, 17, 5:27 PM
Tech Team
 
Join Date: Feb 2002
Location: Kenosha,Wi.
Posts: 383
Re: 904 st-10 nos

FYI, Most Power Brute ST-10's did NOT have 9310
nickel gear sets, that was a special order...

I have rebuilt 20 or more, and have 10+ power brutes in stock...

Hope this helps... Crash
70GS455 likes this.
crashent is offline  
post #14 of 17 (permalink) Old Sep 10th, 17, 6:22 PM Thread Starter
Lifetime Premium Member
Steve
 
Join Date: Nov 2007
Location: Franklinville N.J.
Posts: 1,966
Garage
Re: 904 st-10 nos

Quote:
Originally Posted by crashent View Post
FYI, Most Power Brute ST-10's did NOT have 9310
nickel gear sets, that was a special order...

I have rebuilt 20 or more, and have 10+ power brutes in stock...

Hope this helps... Crash
Crash

The owner claims this is the nickel 9310 version. I need to find out how to prove that before money changes hands. This is NOS so maybe there is paper work.

Do you have any nickel units in stock?

64 Chevelle 496
64 F100 Street Rod with BBC /Chevy trapped in a ford body
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
StevenS is online now  
post #15 of 17 (permalink) Old Sep 10th, 17, 7:40 PM
Tech Team
 
Join Date: Oct 1998
Location: Waukesha WI
Posts: 392
Re: 904 st-10 nos

Quote:
Originally Posted by StevenS View Post
Gary

I remember those days when they were 440.00 I really dont want a muncie with straight cut noisey gears. See what old age does to you.
Pretty sure the ST10's use the same gear tooth angle as the M22's. If you have anything other than stock exhaust you'd never hear it. Just had my 42 year old ST10 out for a cruise this afternoon, quiet as a church house mouse.
Gary Anderson is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in









Old Thread Warning
This Thread is more than 994 days old. It is very likely that it does not need any further discussion and thus bumping it serves no purpose.
If you still feel it is necessary to make a new reply, you can still do so though.

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome