LT1-S vs RXT
Thread Starter
Teching In
Joined: Feb 2016
Posts: 44
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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; Jan 28, 2017 at 07:40 PM.
FormerVendor
Joined: Dec 2008
Posts: 287
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From: Anaheim, Ca
Thank you for your interest in McLeod Racing.
I think the RXT would be a great choice for your project.
The part number you will need is 6405507M.
This will come complete with a steel flywheel.
If you have any further questions please feel free to contact me at
billym@mcleodracing.com
Kind Regards,
I think the RXT would be a great choice for your project.
The part number you will need is 6405507M.
This will come complete with a steel flywheel.
If you have any further questions please feel free to contact me at
billym@mcleodracing.com
Kind Regards,
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
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 ?
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.
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Thread Starter
Teching In
Joined: Feb 2016
Posts: 44
Likes: 2
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.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
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.
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.
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.
TECH Fanatic
Joined: Jul 2007
Posts: 1,802
Likes: 333
From: Wilmington, De
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.
As a plus, with the way the LT1 clutch is designed, it installs like a single disc.
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.
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.
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
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
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....
TECH Enthusiast
Joined: Nov 2005
Posts: 749
Likes: 18
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.
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.