March 14, 2025, 08:01:48 PM

Author Topic: 403 LS2 FD - LS7 Build for 2020!  (Read 278720 times)

Offline kinger

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #765 on: May 05, 2020, 01:00:41 PM »
Mine is mamofied and uses the lightweight steel version.  Was 25lbs or something like that. 
93 Touring, 6.3L, T56 Magnum, Mamo RPS BC2 clutch, FAST 90, NW 90TB TB, 8.8, samberg everything, AC, PS, TC, Cruise, LED Tails, HID head lights

Offline Exidous

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #766 on: May 05, 2020, 01:52:39 PM »
I will swap you one for one. My LT1S for yours. I'll even do the work. :-p
94 BB Sleeved gen IV LS7, MS3ProU with TC, RONIN 8.8 and LT's with custom 3.5"single to VAREX muffler.

Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #767 on: May 07, 2020, 09:38:56 PM »


Completely blown away.  These fell off the UPS truck today and I was not responsible.  I'll just reiterate that I'm a very lucky person. 

Weds TC105X's 18x9.5 square.  I have a fresh set of 275/35/18 Maxxis RC1's on the way now to mount up.  Can't wait to get this thing on the ground!  Need to get busy busting a transmission apart now so I'm not holding up the show lol

Offline largeorangefont

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #768 on: May 07, 2020, 10:28:30 PM »
Nice.. that shits gonna work.

The 275 RC1s are huge.. I run them on a 10.5 wheel and they aren’t even stretched :)
Quote from: cool
Sell it to spacevomit.  He'll finish it.

Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #769 on: May 07, 2020, 10:42:17 PM »
I made my choice based on section width...we’ll see haha. The 255/40/17’s are 10.5 section on a 9”. This will be 11.2 section on a 9.5.

Have you tried their new R2 compound? My 17’s are 2 years old and the old compound.

Offline largeorangefont

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #770 on: May 07, 2020, 10:54:49 PM »
I made my choice based on section width...we’ll see haha. The 255/40/17’s are 10.5 section on a 9”. This will be 11.2 section on a 9.5.

Have you tried their new R2 compound? My 17’s are 2 years old and the old compound.

I ran my first set of 275s on a 9.5. I went to 10.5 wheels for the 2nd set.

I need to buy a new set. ALL the R1 compound tires in 275/35/17 were made in 2014. I was holding off on buying more for that reason. I was worried they were going to discontinue that size, but thankfully they made some more in the new compound.
Quote from: cool
Sell it to spacevomit.  He'll finish it.

Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #771 on: May 08, 2020, 11:35:26 AM »
I made my choice based on section width...we’ll see haha. The 255/40/17’s are 10.5 section on a 9”. This will be 11.2 section on a 9.5.

Have you tried their new R2 compound? My 17’s are 2 years old and the old compound.

I ran my first set of 275s on a 9.5. I went to 10.5 wheels for the 2nd set.

I need to buy a new set. ALL the R1 compound tires in 275/35/17 were made in 2014. I was holding off on buying more for that reason. I was worried they were going to discontinue that size, but thankfully they made some more in the new compound.


I was having the same worry!  When I saw they had an R2 compound they only had it in the 255/40/17 size, but none of the others.  I figured that meant everything else was old, but I also started to worry that they were going to disco the tire.  I love these things lol. 

The price was way cheaper on the 275/35/18's than I remember seeing in the R1's too!  They were $999 for four and I remember them being much higher, like 350 a tire.

Offline wickedrx7

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #772 on: May 08, 2020, 11:56:49 AM »
What offset are you wheels. Most people say that 275/35 is too tall for the front. But I’ve definitely seen others run it.

1993 Touring, 2012 L99, T-56, Ronnin 8.8, Ohlins, Speedhut, Samberg and lots of custom parts
Build Thread - http://www.norotors.com/index.php?topic=19354.0
Pictures - www.flikr.com/wickedrx7

Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #773 on: May 08, 2020, 11:59:51 AM »
I have some extra motivation now to get this shit back together...I want to see it on these new wheels!

Got the trans busted apart and put back together last night.  Just waiting on the shifter to show up today and then it can get shoved back in the car.



Tick is having a fire sale on rear extension housings.  Instead of swapping the seal and driveshaft bushing on mine, for not much more I started with a brand new housing with 0 miles.  Made the swap easier, and hopefully fool proof on getting the thing sealed up.



I checked out the reverse syncro and everything appears fine.  My reverse popping out issue must have been an issue with the shifter and not the trans itself.  That is far and away the better of the two outcomes lol.  Also, I think I found why my shifter was leaking...











Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #774 on: May 08, 2020, 12:03:29 PM »
What offset are you wheels. Most people say that 275/35 is too tall for the front. But I’ve definitely seen others run it.

I've seen people running 275's, and even 295/30's up front on stock fenders.  The Maxxis run a little short they're only 25.4" tall.  I've seen some 275/35's that are 25.7".  I was torn between 265 and 275, but I want to give 275 square a shot.  I'd rather keep a square setup.  The tallest tire I've ever had was 25" so I'm curious how it all fits.

The wheels are 18x9.5 +45".  I'll run my 12mm spacer in the back still, and the front should be real aggressive with the 275's.  My fenders are rolled, and the rear lips are cut down for more clearance. 

Offline largeorangefont

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #775 on: May 08, 2020, 12:23:27 PM »
I made my choice based on section width...we’ll see haha. The 255/40/17’s are 10.5 section on a 9”. This will be 11.2 section on a 9.5.

Have you tried their new R2 compound? My 17’s are 2 years old and the old compound.

I ran my first set of 275s on a 9.5. I went to 10.5 wheels for the 2nd set.

Yea they dropped the prices back down to what they were when they came out. My 275s are $200/tire, which is a great deal.

I need to buy a new set. ALL the R1 compound tires in 275/35/17 were made in 2014. I was holding off on buying more for that reason. I was worried they were going to discontinue that size, but thankfully they made some more in the new compound.


I was having the same worry!  When I saw they had an R2 compound they only had it in the 255/40/17 size, but none of the others.  I figured that meant everything else was old, but I also started to worry that they were going to disco the tire.  I love these things lol. 

The price was way cheaper on the 275/35/18's than I remember seeing in the R1's too!  They were $999 for four and I remember them being much higher, like 350 a tire.

Quote from: cool
Sell it to spacevomit.  He'll finish it.

Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #776 on: May 11, 2020, 02:45:40 PM »
Got a ton done over the weekend.  Worked until about 12:30 last night getting stuff thrown back together.  I splurged on the Sikky shifter.  I've seen mostly good feedback, and after so much frustration with my old shifter I'm trying to do it "right" and hopefully not have issues again.  As I was putting everything together I kind of had a moment where I thought about how "right" I've been doing things, and still just perpetually redoing the same shit over and over...so I hope I'm not disappointed by this thing.  I might have to go back to buying used parts and spending less money if it is all just going to break anyways lol.

The moment of self pity was when I was laying under the car bolting the exhaust up, I found the rear of the car covered in thick grease.  Turns out my axle boot has recently split and it is throwing axle grease out everywhere.  I have had relentless issues with the multiple 8.8 setups in the car since I made the swap.  I really wish I had kept the mazda diff truly.  I loved the engagement of the T2 diff, and the rear end itself was quiet other than the noisy diff mount.  Could have added some more isolation there and been happy I think.  I even prefer the short gearing I have 3.90's in the car now.

It isn't a major issue, and could be easily fixed with a new boot from vatozone, but just frustrating to be on the home stretch and sent back to tear things apart again.  Once I get it running in the next few days I'll be taking it up to my dad's to use the lift and the press.  Months ago I picked up some clearance DSS pro level axles for Cobra diffs which have the Porsche CV's.  I guess they didn't realize with a $20 seal swap you can use cobra stubs in an explorer housing.  Should be a nice refinement for the car vs the sloppy Ford tri-pods.  Another LS7 swap component I can throw on early I guess.

Construction of the Sikky shifter is obviously very pretty, and it is a neat trick how they keep the shift lever in plane even though it is offset.  It just better not leak or have any performance issues or I'm ripping the bitch out and using one of the stock magnum shifters.

I did get myself into a bit of a frustrating situation lol...started out not on the trans jack, but rather the trusty barstool and floor jack method I used to drop the trans.  Turns out the Sikky shifter lever hits the floor on the way up.  Had to cut and bash the floor down a little bit, but Matt's shifter plate still seals just fine.  However, when it was balancing on the jack and got stuck on the floor it tilted the trans too far nose up and I started showering in gear oil, which by the way - Tremec now sells their own syncromesh manual transmission fluid.  I'll be trying that out instead of the Redline D4 that I had in it.  Trans fluid is I think the most expensive liquid I put in the car so it is always nice to be showering in it under the car.





As a round 2, and with the driveshaft yoke in the rear of the trans, it went in very easily with the trans jack.  This thing is badass I hadn't used it before.



You can see the section I had to cut for clearance.  I bashed it a lot before cutting it, but still barely didn't have enough room.  Wound up buying a sawzall over the weekend and made short work of it.



I'm finally retiring Mattster's prototype MGW shifter plate cover.  This was one of the first if not the first units he made for the MGW shifter way back in the day.  He got a new one out to me in only a couple days for the Sikky, and it fits great and seals very nicely. 




So, really in the home stretch now.  Need to bleed the clutch slave, install the radiator and fill it, hook the battery up, and then flash in a new calibration for the LS3 MAF and the coil packs.  Should only need 1 or 2 more short nights of wrenching on it.

I want to vaporize my old tires in a massive burnout, but they're also in really good shape...not sure if I want to sell them, hold onto them to use at an event, or light them off lol.  The tires are 2 years old, but still work well and have a ton of tread.  No camber wear either they're wearing evenly.  Most of the value is probably in the wheels, and even that isn't huge, but if I could get like 800-900 out of them that'd be nice.

Offline Cobranut

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #777 on: May 11, 2020, 03:54:19 PM »
Yuk.  I usually drain my transmission before i drop it, just to avoid the potential mess.
I do have a set of tailshaft plugs that work pretty well for most applications.
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.

Offline MPbdy

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #778 on: May 11, 2020, 04:55:27 PM »
Yuk.  I usually drain my transmission before i drop it, just to avoid the potential mess.
I do have a set of tailshaft plugs that work pretty well for most applications.

Yeah the choice is either glue the shifter on outside the car and make it pretty, or get the trans mostly in the car and try to silicone it on through the shifter hole.  You can't R&R the shifter on a magnum with the trans fully installed.  I thought I'd be able to keep it level enough haha it proved me wrong.  Good news is I still have more fluid in it than I did before with all the leaks I had.  Filling a t56 from the top is a much nicer experience than through the plug in the side in my opinion.

I'm having to build up my own collection of random crap now that I'm working out of my own garage and not my dad's with 40+ years of collecting useful junk haha.  I need either an old yoke or one of the plugs.  They come in very handy lol.

Offline Cobranut

Re: 403 LS2 FD - LS7 Build for 2020!
« Reply #779 on: May 11, 2020, 09:34:27 PM »
Yuk.  I usually drain my transmission before i drop it, just to avoid the potential mess.
I do have a set of tailshaft plugs that work pretty well for most applications.

Yeah the choice is either glue the shifter on outside the car and make it pretty, or get the trans mostly in the car and try to silicone it on through the shifter hole.  You can't R&R the shifter on a magnum with the trans fully installed.  I thought I'd be able to keep it level enough haha it proved me wrong.  Good news is I still have more fluid in it than I did before with all the leaks I had.  Filling a t56 from the top is a much nicer experience than through the plug in the side in my opinion.

I'm having to build up my own collection of random crap now that I'm working out of my own garage and not my dad's with 40+ years of collecting useful junk haha.  I need either an old yoke or one of the plugs.  They come in very handy lol.

I bought an assortment of plastic plugs that fit several yoke sizes.  IIRC it was under $20.
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.