LT1-S vs RXT - LS1TECH - Camaro and Firebird Forum Discussion



Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters
Sponsored by:
Sponsored by:

LT1-S vs RXT

Reply
 
Thread Tools Search this Thread
Old 01-28-2017, 07:28 PM   #1
Teching In
Thread Starter
 
Aussie_LS2's Avatar
 
Join Date: Feb 2016
Posts: 18
Default LT1-S vs RXT

Hey guys so I'm from Australia and I've just dropped an LS1 into an 1986 Holden. Car weighs 3150 with me in it. I've done a bit of searching and I've narrowed it down to the LT1-S and the RXT clutch. It's 90% street driven and will hit the track a few times on slicks. Power wise I'm at 350rwhp for the first 3000 miles and then I'll be fitting a blower/cam package. I am an aggressive street driver...This car is built for fun and will put on a few smoke shows on the street but I do live in the city and getting out of here can be a pita on the left leg.

Last edited by Aussie_LS2; 01-28-2017 at 07:40 PM.
Aussie_LS2 is offline   Reply With Quote
Old 02-01-2017, 11:31 AM   #2
LS1Tech Platinum Sponsor
 
Billy M's Avatar
 
Join Date: Dec 2008
Location: Placentia Ca
Posts: 285
Default

Billy M is offline   Reply With Quote
Old 02-04-2017, 04:36 PM   #3
9 Second Club
 
Join Date: Nov 2003
Location: Norn Iron
Posts: 10,094
Default

Quote:
Originally Posted by Aussie_LS2 View Post
Hey guys so I'm from Australia and I've just dropped an LS1 into an 1986 Holden. Car weighs 3150 with me in it. I've done a bit of searching and I've narrowed it down to the LT1-S and the RXT clutch. It's 90% street driven and will hit the track a few times on slicks. Power wise I'm at 350rwhp for the first 3000 miles and then I'll be fitting a blower/cam package. I am an aggressive street driver...This car is built for fun and will put on a few smoke shows on the street but I do live in the city and getting out of here can be a pita on the left leg.

As your in Oz...Xtreme ?

I'd have thought the RST would be more comparable to the LT1-S in that they're more organic based discs ?

What sort of power are you hoping to get to with the blower ?
stevieturbo is offline   Reply With Quote
Old 02-06-2017, 10:31 AM   #4
LS1Tech Sponsor
iTrader: (15)
 
SNLPerformance's Avatar
 
Join Date: Feb 2008
Location: Ft. Worth, TX
Posts: 3,310
Default

Quote:
Originally Posted by Aussie_LS2 View Post
Hey guys so I'm from Australia and I've just dropped an LS1 into an 1986 Holden. Car weighs 3150 with me in it. I've done a bit of searching and I've narrowed it down to the LT1-S and the RXT clutch. It's 90% street driven and will hit the track a few times on slicks. Power wise I'm at 350rwhp for the first 3000 miles and then I'll be fitting a blower/cam package. I am an aggressive street driver...This car is built for fun and will put on a few smoke shows on the street but I do live in the city and getting out of here can be a pita on the left leg.
The LT1-S would be perfect. It's rated for 700WHP/TQ, and it wont kill your leg. Give us a shout if you have any questions.
SNLPerformance is offline   Reply With Quote
Old 02-07-2017, 11:39 AM   #5
11 Second Club
iTrader: (5)
 
necrocannibal's Avatar
 
Join Date: Jan 2003
Location: Memphis,TN
Posts: 1,302
Default

My vote is Monster. I have the LT1-R which is rated at 1200 and it drives like a dream.
necrocannibal is offline   Reply With Quote
Old 02-08-2017, 08:46 AM   #6
11 Second Club
iTrader: (37)
 
Mikey 97Z M6's Avatar
 
Join Date: Mar 2004
Location: Vancouver, WA
Posts: 2,046
Default

The LT1-S is a great clutch. I've ran many clutches over the years and this is hands down the best street/track friendly clutch I've owned or driven.
Mikey 97Z M6 is offline   Reply With Quote
Old 02-08-2017, 09:05 AM   #7
LS1Tech Sponsor
iTrader: (15)
 
SNLPerformance's Avatar
 
Join Date: Feb 2008
Location: Ft. Worth, TX
Posts: 3,310
Default

Quote:
Originally Posted by necrocannibal View Post
My vote is Monster. I have the LT1-R which is rated at 1200 and it drives like a dream.
Quote:
Originally Posted by Mikey 97Z M6 View Post
The LT1-S is a great clutch. I've ran many clutches over the years and this is hands down the best street/track friendly clutch I've owned or driven.
Thanks for the votes!!
SNLPerformance is offline   Reply With Quote
Old 02-08-2017, 01:47 PM   #8
TECH Enthusiast
iTrader: (5)
 
Join Date: May 2009
Location: clear lake, Texas
Posts: 582
Default

Are ya'll using stock master cylinders with your Monster LT1 setups?
whatsa347 is offline   Reply With Quote
Old 02-08-2017, 05:30 PM   #9
TECH Enthusiast
iTrader: (7)
 
milkey57's Avatar
 
Join Date: Aug 2010
Location: Cedar Park, Tx
Posts: 531
Default

I'm with the lt1 guys here best twin I have had or driven. Yes stock MC here too
milkey57 is offline   Reply With Quote
Old 02-09-2017, 03:24 AM   #10
Teching In
Thread Starter
 
Aussie_LS2's Avatar
 
Join Date: Feb 2016
Posts: 18
Default

Quote:
Originally Posted by stevieturbo View Post
As your in Oz...Xtreme ?

I'd have thought the RST would be more comparable to the LT1-S in that they're more organic based discs ?

What sort of power are you hoping to get to with the blower ?
500rwhp is the number maybe less if it gets too lively.

Xtreme clutches are ok but the clutches available in the U.S are much better value imo. Seems like either are good and they're pretty similarly priced which is why I asked. Thanks Billy M for your help and SNLperformance. I can't find a bad word about either of these.
Aussie_LS2 is offline   Reply With Quote
Old 02-09-2017, 06:41 AM   #11
11 Second Club
iTrader: (5)
 
necrocannibal's Avatar
 
Join Date: Jan 2003
Location: Memphis,TN
Posts: 1,302
Default

Stock master and stock slave. Best high horsepower clutch I've ever driven.
necrocannibal is offline   Reply With Quote
Old 02-09-2017, 06:45 AM   #12
9 Second Club
 
Join Date: Nov 2003
Location: Norn Iron
Posts: 10,094
Default

Quote:
Originally Posted by Aussie_LS2 View Post
500rwhp is the number maybe less if it gets too lively.

Xtreme clutches are ok but the clutches available in the U.S are much better value imo. Seems like either are good and they're pretty similarly priced which is why I asked. Thanks Billy M for your help and SNLperformance. I can't find a bad word about either of these.

For that sort of power, plenty of single plate clutches would easily cope.

A twin would be serious overkill.
stevieturbo is offline   Reply With Quote
Old 02-09-2017, 11:20 AM   #13
LS1Tech Sponsor
iTrader: (15)
 
SNLPerformance's Avatar
 
Join Date: Feb 2008
Location: Ft. Worth, TX
Posts: 3,310
Default

Quote:
Originally Posted by whatsa347 View Post
Are ya'll using stock master cylinders with your Monster LT1 setups?
LT1-XX clutches can use a stock, or any of the aftermarket masters.
SNLPerformance is offline   Reply With Quote
Old 02-09-2017, 11:21 AM   #14
LS1Tech Sponsor
iTrader: (15)
 
SNLPerformance's Avatar
 
Join Date: Feb 2008
Location: Ft. Worth, TX
Posts: 3,310
Default

At 500WHP the LT1-S sounds like too much clutch. However the friction material that we use in the LT1-S is not aggressive, so it won't kill drive-ability, and it will last a lot longer then a single disc.
SNLPerformance is offline   Reply With Quote
Old 02-09-2017, 11:51 AM   #15
TECH Resident
 
MuhThugga's Avatar
 
Join Date: Jul 2007
Location: Wilmington, De
Posts: 973
Default

I have an LT1-S in my 500 RWHP GTO. I picked it over the McLeod because it was cheaper, included a new flywheel with the price, and I liked the idea of having a factory disc and pressure plate. The clutch itself drives -well- like a factory clutch. I don't have any experience with the RXT, but those were my reasons for selecting the Monster over the McLeod.

As a plus, with the way the LT1 clutch is designed, it installs like a single disc.
MuhThugga is offline   Reply With Quote
Old 02-16-2017, 04:26 PM   #16
9 Second Club
iTrader: (8)
 
Join Date: Jan 2010
Location: No VA
Posts: 965
Default

If you have any intention of following through with adding a blower I wouldn't be looking at the LT1-S to handle it. While the LT1-S is rated for 700whp/tq it cant handle a 5.3L on wastegate with a little chinese turbo, so it wasn't getting hit nearly as hard as a blower would off the line. I highly doubt it was even making 600wtq and it absolutely destroyed itself as shown below.

I've added LSA blowers to LS3's making more power then what this LT1-S saw and the McLeod handled it without issue. In fact the RXT has held up to multiple 9 sec passes at over 155MPH in a 4k lb car without issue. I know the vender says the RXT and LT1-S should not be compared but most every consumer compares on price not clutch material.






LT1-S vs RXT-img_1052.jpg
LT1-S vs RXT-img_1051.jpg
SLOW SEDAN is offline   Reply With Quote
Old 02-16-2017, 04:38 PM   #17
LS1Tech Sponsor
iTrader: (15)
 
SNLPerformance's Avatar
 
Join Date: Feb 2008
Location: Ft. Worth, TX
Posts: 3,310
Default

Quote:
Originally Posted by SLOW SEDAN View Post
If you have any intention of following through with adding a blower I wouldn't be looking at the LT1-S to handle it. While the LT1-S is rated for 700whp/tq it cant handle a 5.3L on wastegate with a little chinese turbo, so it wasn't getting hit nearly as hard as a blower would off the line. I highly doubt it was even making 600wtq and it absolutely destroyed itself as shown below.

I've added LSA blowers to LS3's making more power then what this LT1-S saw and the McLeod handled it without issue. In fact the RXT has held up to multiple 9 sec passes at over 155MPH in a 4k lb car without issue. I know the vender says the RXT and LT1-S should not be compared but most every consumer compares on price not clutch material.






Attachment 567520
Attachment 567519
Clutch dust and hot spotting is normal on full faced organic clutches, that said, that S does look over-powered. I've got 5th Gen Camaro guys making north of 800 rwhp with S twin discs and no issues, those cars weigh quite a bit as I'm sure you're aware.

That said, any clutch can be over-powered. I wouldn't compare a LT1-S twin disc to a RXT, that is more compared to the SC that we rate at 1000 rwhp. If you want more we have a LT1-R that's rated for 1200 and it's already gone low 8's.

For the newer model guys we have LT1-S triples that have held 1100 rwhp and have already gone numerous 1.3x 60's, the SC triples are rated to 1500 rwhp and the R triples are rated to 1800 rwhp... people should always compare apples to apples - comparing a ceramic friction twin to an organic definitely isn't that as you stated. The pricing isn't close, if you price a RXT with a quality billet steel flywheel it's closer/more than the SC....
SNLPerformance is offline   Reply With Quote
Old 02-17-2017, 10:27 AM   #18
10 Second Club
iTrader: (13)
 
Detoxx03's Avatar
 
Join Date: Jan 2007
Location: Woodward Avenue
Posts: 7,047
Default

Neither get a Mantic 9000
Detoxx03 is offline   Reply With Quote
Old 02-18-2017, 01:51 PM   #19
TECH Enthusiast
 
Join Date: Nov 2005
Posts: 696
Default

Put in a RXT in my boosted TA and couldn't be happier. This is after my Monster fused itself to the pressure plate and wouldn't disengage. Think i threw some pics in my turbo build of it when I pulled it apart. Taking it apart found a broken spring on the clutch that was causing a rattling sound that started after about 3k miles with the clutch that when I asked about it was told it was a normal sound.

Price I paid for my RXT I would have had to spend $500 or so last I looked to get an equiv Monster. This was prior to the LT1 setups they offer now and I was already hesitant about with my prior failure. Lot of coin to drop to have something possibly fail.

I have approx 15k miles on my RXT on stock master and have no issues at all when turning up the boost to the 750whp range. Went with it because friends did in the past on their cars and never had complaints up to the 900whp range. Pedal feels just like stock. Wife doesn't complain like she did when driving the Monster with Tick master.
Rawr256 is offline   Reply With Quote
Old 02-19-2017, 06:51 AM   #20
11 Second Club
iTrader: (5)
 
necrocannibal's Avatar
 
Join Date: Jan 2003
Location: Memphis,TN
Posts: 1,302
Default

900 rwhp on my LT1-R now for about a year or so and has performed flawlessly. Replaced a Mcleod that was slipping at 700.
necrocannibal is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Tick master w. Mcleod RXT twin ?? 1nastyss Manual Transmission 11 03-21-2017 04:38 PM
McLeod Rxt twin disk/ steel flywheel new in the box mc_ls1 Parts Classifieds 2 03-21-2017 08:53 AM
keep my monster 11inch or go rxt??? SStressin Manual Transmission 8 12-12-2015 10:22 AM
Who runs 275 Pro radial slowlsx Manual Transmission 0 06-22-2015 04:34 PM
McLeod RST or RXT for My Setup? glhs422 Manual Transmission 6 11-17-2011 04:14 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 09:28 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send