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BBills NEW Latest release: A NAG1 TRANS BRAKE!

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12K views 15 replies 13 participants last post by  BuilderBill  
#1 ·
Yep….a Patented trans brake for the NAG1
*This will NEVER in its current form be sold as a “kit”
The work involved in transforming a NAG1 into a NAG1 with a trans. brake is tremendous.
I basically added an additional valve body into the case. This involves machine work on the case.
I needed to further modify internal clutch packs and drums.
Then tying my valve body into the original valve body. Whew.
The only external clue is a short solenoid on the rear passenger side of the case, installed on the flat webbed portion, midway up the case.

I’m working on a remote mounted trans cooler with a fan.
Screwing around with mine, my temps quickly reached 245F….not good.
Also looking into a Moroso trans overflow tank. I needed to use some overflow passages in the tranny case.
This is NOT something to use for more than a moment when staged.
The torque converter is literally trying to tear apart the fluid with a trans brake.

With my 3,000 stall converter, I find the hardest launch is obtained by the following procedure:
*Pre-stage & stage.
*Brake torque to about 2,000 rpm and hit the button. This builds line pressure to lock the tranny.
*Hold the button and raise the rpm to about 300 below your stall speed. ( I wish I could find a stutter box for our vehicles as that would make the launch simple.)
*On the appropriate light, simultaneously, release the button and floor it. The torque converter will then flash about 100 rpm above the actual stall speed.

My jeep now launches HARD!

Again, this will only be available as an upgrade on one of my existing or new High Torque Capacity NAG1’s.
$1,495.00
 
#5 ·
Very nice Bill. You sure know how to raise the bar don't you? Wonder how long the quaifes will be hoolding up to this newly found trans brake?

All that's left to do Bill is solve world hunger and you should be on your way to LX of the Month! lol

Good job
Thanks...
Yeah, don't try a tranny brake with a stock rear for sure!
The LX & Challenger guys will certainly find the weak driveline link.

You certainly have known the months put in on this project.

BTW, the next released product will be more for EVERY Hemi / NAG1 powered vehicle out there.:wink:

Obviously, due to the price and High Torque NAG1 requirement, the tranny brake is for the very serious guy.
Bill
 
#7 ·
Nice work, as always Bill!
 
#16 ·
Actually, I asked a NHRA guy that uses a trans brake on his powerglide and he told me about the "stutter box" trick....they set their 1st stage rev limiter at about 300 rpm BELOW the stall speed and when they let off the button it releases the tranny and 1st rev limiter.

In my little testing it seemed to launch pretty hard like this.
Unfortunately, there is no 2 stage rev limiter for the Gen III Hemis yet.

Certainly the launch will take practice and quite possibly the cars will launch differently than the Jeeps.
Bill