Higher horses, higher revs & even higher torque, a streetable LJ engine swap
- Thread starter toximus
- Start date
OP
OP
The OEM TJ brake booster uses a 11/15" vacuum hose and so I replaced the one way valve with one from GM for the larger 1/2" barbed fitting to match the vacuum port on the LS3 car intake. Part #179-1266. I used 1/2" air brake hose to connect (I had to buy 50ft so if anyone has a use for 49ft let me know).
The side that fits into the brake booster fit just as snug as OEM.
I still need vacuum for the OEM Jeep HVAC controls. So I shortened the Jeep hard vacuum line that runs along the firewall and wrapped it in self fusing electrical tape to increase the diameter for a snug fit:
On the back of the LS3 car intake there's a 1/4" vacuum port that's blocked off. There's a tab on the back with 2 wings that needs to be cut off to use. I used a 90* fitting from Standard Motor Products (VT25) to adapt from 1/4" to 3/16"
Everything on the other side I left stock so the vacuum reservoir and HVAC are left intact.
OP
I can bring 3ft (probably 3x what you'll need) for you to TJ Fest since it won't be worth the price of shipping.
OP
My harness doesn't use the oil level sensor so I changed it out for a plug (ICT Billet FBA_551413). No real purpose other than I think it looks cleaner.
Before:
After:
Before:
After:
OP
Info from Advance Adapters about the 4x4 and low range switch locations:
I swapped the o-ring over to the switch (switch part number 300364):
And installed:
I swapped the o-ring over to the switch (switch part number 300364):
And installed:
OP
Winters shifter mocked up. Reverse, neutral, drive, and manual (TUTD) are all pretty close to the stock TJ location and easy to reach but park is a little forward of stock and requires some extra reaching. But I don't think that'll be a problem.
Random question. But what is the yellow circled item? I have it and never looked into it much and finally decided to care...
OP
It's the airbag trigger. It has a metal ball in it that slides forward under enough deceleration into a tapered slot and sets off the airbag.
OP
I made the mount for the Winters shifter. It's nice and solid.
(ignore the really long bolts. those will be replaced)
I cut the Jeep console to fit around it. I'm not sure I love the look, but at least it beats nothing. Maybe some trim would make it look better?
(ignore the really long bolts. those will be replaced)
I cut the Jeep console to fit around it. I'm not sure I love the look, but at least it beats nothing. Maybe some trim would make it look better?
I think it would look best without a console. Loom up the wiring, get a boot for the tcase shifters and the e brake, and i think that would look pretty sweet.
OP
The kit I mentioned earlier from Radesigns included a shift fork specific to the 6L80E transmission. The shift gate and cable is the same as a 4L80.
The Atlas uses the TJ style linkage shifter (part number also mentioned earlier) which I switched to away from their cable shifter so that I have space to route the exhaust up and over the transmission.
OP
Once I get this thing running and driving and get the building itch again, I'll come back and revisit this.
OP
I had posted about the steam vents early on in this build, but I got them all hooked up today. This uses the flex line kit from Motion Raceworks.
