Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Jake's 4L80e D3

Thread Tools
 
Search this Thread
 
Old Oct 7, 2024 | 07:24 PM
  #1  
Sixty-Eight's Avatar
Thread Starter
Teching In
 
Joined: Oct 2024
Posts: 3
Likes: 0
Default Jake's 4L80e D3

Hello all, new here. I have a Jakes's transmission with D3 brake. Been searching for sometime and don't see what I'm looking for. Anyone know how much current the transbrake circuit draws?

Thanks
Reply
Old Oct 8, 2024 | 09:48 AM
  #2  
MaroonMonsterLS1's Avatar
TECH Junkie
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2012
Posts: 3,614
Likes: 1,326
From: Iowa
Default

Less than 2.5 amps for the standard D3
D3 pro uses a larger solenoid that pulls less than 5
Either way, protect the circuit with a fuse. Use a solid state relay if you plan to bump

I never recommend an ECU trigger be sent directly to a transbrake solenoid. If using an ECU output, always use a relay
Reply
Old Oct 8, 2024 | 02:33 PM
  #3  
Sixty-Eight's Avatar
Thread Starter
Teching In
 
Joined: Oct 2024
Posts: 3
Likes: 0
Default

Great, I thank you. Was wanting to be sure I used the correct size fuse. If over-fused wouldn't help in a melt-down/current over-draw. I've read on some forums where some trans brakes pull in excess of 10 amp which I thought was a lot for pulling in a solenoid.

By the way, I'm using an MSD solid state relay pack. I don't plan to bump at all. I'm going for an old-school approach, backup brake light circuit (through a relay) to provide reverse during backing up and then a parallel button activation switch for staging/launch. Still on a search for a well designed safety lock-out diagram as this is a street/strip car but worst case, I could use a mechanical spring-loaded switch cover to keep fiddly fingers off the activation button.

Again, thanks for the reply.
Reply
Old Oct 10, 2024 | 02:58 PM
  #4  
5.7stroker's Avatar
TECH Addict
15 Year Member
Liked
Loved
Community Favorite
iTrader: (36)
 
Joined: Apr 2009
Posts: 2,356
Likes: 276
From: OH
Default

Originally Posted by Sixty-Eight
Great, I thank you. Was wanting to be sure I used the correct size fuse. If over-fused wouldn't help in a melt-down/current over-draw. I've read on some forums where some trans brakes pull in excess of 10 amp which I thought was a lot for pulling in a solenoid.

By the way, I'm using an MSD solid state relay pack. I don't plan to bump at all. I'm going for an old-school approach, backup brake light circuit (through a relay) to provide reverse during backing up and then a parallel button activation switch for staging/launch. Still on a search for a well designed safety lock-out diagram as this is a street/strip car but worst case, I could use a mechanical spring-loaded switch cover to keep fiddly fingers off the activation button.

Again, thanks for the reply.
Factory or aftermarket ECU? Some pretty trick things you can do with a holley and setting up the safety parameters. Good call on the MSD 4 bank SSR. I have one also those, they are nice! On the stock ECU setup I ran a LED light on my Jakes D3 to tell me when it's on or not, and some relays tied into the microswitches and park neutral safety switch on an aftermarket shifter so that I didn't have to hold the transbrake button in every time I go into reverse. If your worried about hitting the activation button, you just wire a ON/OFF arm switch prior to the transbrake activation button.
Reply
Old Oct 10, 2024 | 06:41 PM
  #5  
Sixty-Eight's Avatar
Thread Starter
Teching In
 
Joined: Oct 2024
Posts: 3
Likes: 0
Default

I am running a Sniper Xflow but frankly I may not be keeping it much longer. I'm having a lot of reliability issues with it and seriously considering going back to carb setup. I like the microswitches idea. I've got a B&M Quicksilver, I may be able to tie something into the existing switches or possibly add something. Great suggestions...thanks very much!
Reply




All times are GMT -5. The time now is 06:25 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE