Ford Super 8.8 irs swap thread. Rear brakes too

[Invincibleextremes]

Looking forward to seeing what shane does with his kit.  He was actually there at the half mile event when me and David were testing the very first super 8.8 swap. 

 

Now jason, shane and David all have the diff setup.  All 3 of them have different generations of it but they're basically the same swap.

Edited April 21, 2022 by Invincibleextremes

[Invincibleextremes]

Had a great weekend watching Jason's 3,000 lb datsun put down low 10 second passes effortlessly using the super 8.8 setup on cheap coilovers and stock control arms.

 

He pulled a personal best of 9.9 @ 134 at the end of that weekend.

Edited May 4, 2022 by Invincibleextremes

[Invincibleextremes]

Going to point out that jason hit a personal best of 9.88 @ 137.8 with his turbo 4.8 using cheap neon coilovers and his super 8.8 swap kit which has NO issues holding down the power.

 

The second thing worth mentioning is now the latest version of the kit allows moving the wheel back up to 3/4 rearward.

 

This is dependent on what you are willing to do up top to match, i designed and now offer conversion tops that move the shock back if using cheap coilovers like jason did.

 

Using other brands of coilovers you can redrill the shock tower and rotate the camber plate if you like to squeeze a little more.  3/4 is about the limit because after that you run into the sheetmetal.

[Invincibleextremes]

Did an install this weekend and grabbed a photo of the 3.55 diff in my latest cradle.

Edited June 13, 2022 by Invincibleextremes

[rossman]

It certainly looks beefy and you can't argue with results!

 

I'm curious what moving the strut back does for you?

[Invincibleextremes]

Moving the wheel back centers it a little better in the quarter panel opening and allows maximum tire to fit whatever your flare or not flare setup is.

 

The stock wheel placement is heavily forward and the tires hit the front of the wheel well once you start getting too big.

[fusion]

On 6/13/2022 at 2:21 PM, Invincibleextremes said:

Going to point out that jason hit a personal best of 9.88 @ 137.8 with his turbo 4.8 using cheap neon coilovers and his super 8.8 swap kit which has NO issues holding down the power.

 

The second thing worth mentioning is now the latest version of the kit allows moving the wheel back up to 3/4 rearward.

 

This is dependent on what you are willing to do up top to match, i designed and now offer conversion tops that move the shock back if using cheap coilovers like jason did.

 

Using other brands of coilovers you can redrill the shock tower and rotate the camber plate if you like to squeeze a little more.  3/4 is about the limit because after that you run into the sheetmetal.

Can you post pics showing what has changed in the kit that allows the rear wheels to move backward?

 

 

[Invincibleextremes]

The tube section that the has the 5/8 bolt going through it is shorter by 3/4 and i now include that 3/4 long section for people to place in front of, or behind the upright piece.  Or section it and space it exactly to your liking, depending on how your shock upper setup is.  Moving the wheel back requires moving the strut top back as well to prevent binding.

[Invincibleextremes]

Jason is rounding the final day of rocky mountain race week using this setup.  He's 3rd place in the 10.00 true street class and drove a couple thousand miles so far in the course of a week and a half and will be driving that datsun home over 1,000 miles to California from kansas.

[Invincibleextremes]

After 4,500 miles in two weeks, and a dozen low 10 and high 9 second passes, Jason is back home from Rocky Mountain race week, having driven the ENTIRE way and placing 3rd place in the 10.00 true street class.

[Invincibleextremes]

Nick shredded his r200 turbo axles, and his r200 whined, so he swapped to the super 8.8 and did the front mustang spindle swap with boss 302 brembos too.

 

Motor is turbo 1jz making around 600 with an e85 tune.

[Invincibleextremes]

Designed a replacement for the r200 mustache bar that ties in the suspension mounts too, but still has bushings for the rear of the diff cradle.

[Invincibleextremes]

As time goes on, more and more of the kits get installed on various project cars, mild to wild, including my own rusty widebody car.

[Invincibleextremes]

David hit 171 mph repeatedly in the half mile event recently and looked darn good doing it.

 

He also spent the weekend kicking butt at ls fest proving once again the absolute reliability of the super 8.8 setup.

 

His lsx 434 hit a best of 10.3 @ 141 mph with a DA of over 4000 and him using a 100 shot.

[Invincibleextremes]

Gotta love the guys with parachutes and huge turbos.

[Invincibleextremes]

There's an optional piece now that replaces the mustache bar and rear drop downs and drastically strengthens the rear of the car and completely illuminates the toe issues these cars sometimes come with from the factory.  

 

The newest version of the mustache replacement is lighter and has more provisions for fuel line routing.

 

It ties in the mustache bar anchor points with the 4 drop down bolts, making the entire back of the car incredibly strong, while still having proper isolation in the rear differential mount for the cradle via common aftermarket mustang bushings.

[Invincibleextremes]

175 mph back to back Class wins for Davids Blue 260z with a 434ci LSX running a half mile event.

 

Terry's green car has over 1,000whp but turned down for pump gas it pulled a 1.3 60ft on a 6.0 @ 118 run for the 1/8 mile.

 

his best so far has been 9.3 @ 150 mph in the 1/4 mile and 5.9 @ 126 in the 1/8.

 

 

[Invincibleextremes]

 

 

 

[fusion]

On 9/10/2020 at 1:08 AM, Invincibleextremes said:

 

How to disassemble the cv axles to replace the shaft.  As you can see it only takes a couple minutes.

 

Here's another thing I've come across... I buy the donor cv axles in bulk from Shelby America.  Half of them are unusable pairs because they're gt350 axles that have the left shaft with a different cv and shaft... meaning the custom shafts won't work in that axle.

 

Some guys have stumbled across this and now have a gt350 left shaft just hanging out after purchasing another left shaft off the 2015-2017 v8 cars or 2018 and newer v8 automatic transmission cars.

 

I'm going to to contact some companies and see if they can continue the splines and hack the extra length off of half of my growing pile of gt350 axles.  Thereby converting left inner stub shafts into right ones, making a complete donor pair that would utilize the stronger larger cv joints from the gt350 left axle.

 

This will accomplish two things.

 

1.  Gt350 left shafts can be shortened unlike the right side, or the hollow standard v8 shafts.  For guys not pushing the hp limits this opens up a very economical option for guys doing the swap who can then enjoy silky smooth 8 ball cv axles.  No idea what the theoretical limit of cut down gt350 shafts will be, but they are substantially stronger than the solid shaft found in explorers, and that's not even comparing the cv itself. 

 

2. The gt350 cv joints themselves are substantially stronger than the regular v8 cv joints currently used for the swap... which themselves are no slouch.  I can have batches made of the larger diameter custom shafts to fit those larger joints... and at a price point for a usable pair of axles that still don't come up to the price of custom length DSS race axles.

 

This layered approach drives the cost of the swap even lower while substantially increasing the hp potential for pennies on the dollar for guys who want the peace of mind of the bigger diameter hardened shafts and bigger cv joints.

 

Another option would be to get a pair of gt350 left axles cut and splined to the smaller v8 inner cv specs and run gt350 cv joints on the outboard side and regular v8 differential stub shafts.  This again would be very economical since i buy the axles in bulk.

 

@Invincibleextremes Vlad, your video showing how to swap the axles into the Mustang GT cv is down.  Could you please put it back up?  I ran into an issue and need to reassemble one of my axles.  Or if it's deleted would you be willing to make another step by step video of the process?

 

Also, just to clarify, the CVs need to be from 2015-2017 GT v8 cars or 2018 and newer GT v8 automatic transmission cars and can be either side?

 

Thank you