LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

What kind of motor to get, LT1 or LS1?

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Old Apr 23, 2005 | 01:56 PM
  #1  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
What kind of motor to get, LT1 or LS1?

Just Kidding, lol.

Seriously, how is everyones swap holding up? I havent seen a thread like this yet so...

Mine, no problems yet really. Been putting about 100 miles on it every week, not too much, but the car has been holding up nice I guess.

I still need a Speedo and a Heater Box for the firewall, but those are minor things that I can live without. Also, just bought some Weld Prostars, skinnies up front and MT 26x10's on the 15x8's out back. Going to the drag strip tonight to see what they will give me. I think after my cam and gear swap the car will be pretty much done, well for a little while.

Anyone else?
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Old Apr 23, 2005 | 04:37 PM
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From: Angleton, TX
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I was about to get irate.


Mines holding up awesome, couldn't ask for it to run any better. Going the whole package better in June with a T-56 and gears. I've put probably 60K miles on it since I swapped it in and its run like a champ ever since with a few minor hiccups.



Oh yeah, new clutch and set of Nittos going on too

Last edited by TexasLT1; Apr 23, 2005 at 04:41 PM.
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Old Apr 23, 2005 | 05:58 PM
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Car: 1982 Z28
Engine: LS1
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Nice thread topic Rick, I skipped it until I saw your username on it.

Mine just did another day of road coursing, this time on the Pocono East course. This brings the total to 6 events with no major trouble.

I had an O2 sensor fail last event of last season, replaced both with Denso pieces, so we'll see if they hold up better...the AC-Delco ones lasted 4.5 events before one let go.

I just changed the oil and went back to Mobil-1 15W-50 in prep for the National F-Body Motorsports Event in 2 weeks, should be nice 'n warm in Memphis so the thick stuff is indicated.

http://www.fbody-event.org/

-Kevin
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Old Apr 24, 2005 | 10:55 AM
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
I figured my user name would give it away.

Glad to hear you guys' cars are holding up. I wish I had a T56 for the street, but I do too much straight line racing so its an auto for me. And Kevin, road racing and only having a O2 sensor failure, thats just awesome.

Went to the strip last night and knocked off a whopping .1 with the slicks vs. drag radials, but I think that was really due to the cool weather, so its time to put those MT 26x10x15's up forsale. I hate swithching wheels out at the track, so I'm just going to get some 15in. Drag Radials to put on the Welds and be done with it.

How does she look?
Attached Thumbnails What kind of motor to get, LT1 or LS1?-mvc-003s.jpg  
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Old Apr 24, 2005 | 01:41 PM
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Your car looks great with the prostars on it!

My swap has been holding up great, I drive 2-3 times a week to work and to and from the drag strip as often as possible. I have not had any troubles at all.
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Old Apr 24, 2005 | 05:19 PM
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Thanks Camarocain. Yeah most of the mileage I've been putting on is to and from and at the Drag Strip. 1/8 mile then sut down and back, thats a half mile 4-5 times on saturday nights lol. Needless to say thats alot of abuse every week, and no problems yet.

What times are you getting out of that LS6?
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Old Apr 24, 2005 | 06:16 PM
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Not too bad. It has ran quite a few 12.50's @ 108 which isnt too bad considering i have only put lower control arms on the car. So everything else is completely stock as far as the engine and transmission go and for some reason an 02 exhaust manifold would not fit the passenger side so i had to go with the 98 manifold. But it also helps that it only weighs 3170 with me in it.
This is also in no so great weather. I have a few upgrades coming soon, my rear end started acting up so i need to change out the posi and i have some 4th gen front seats lined up(i hear they are lighter than the third gen's) and i just picked up some 15x3's for the front. i had 16x8's. So we shall see how it does. I cant wait til i save enough for the tq converter i want...
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Old Apr 24, 2005 | 10:00 PM
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
With the stall I dropped about .35. With the LCA's I dropped .5, but I think that was because after I put the stall in, the stock LCA's were twisting/buckling with the addition of more power off of the line, lots of bad wheel hopping and spinning. Now the thing just dead hooks.

I have some 4th gen seats and they did feel lighter over the 3rd gen ones when I was swapping them out, dont know exactly how much, but they are lighter.

Yeah I cant wait till someone wants to install my cam for me , and till I get some better gears for the rear, should be really haulin then.
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Old Apr 24, 2005 | 11:56 PM
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Car: '92 RS
damn CamaroCain, hope I don't run into you when I'm home, I'll won't be expecting to get my butt handed to me by another thirdgen Do you run at HRP?


StngKlr - car looks awesome, I've been considering picking up a set of those wheels myself. What times are you running?

*Edit* Nevermind, just saw your sig. Nice times.
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Old Apr 25, 2005 | 12:59 PM
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stngklr, I think you are right about the LCA's helping more due to the stall. I plan on getting a yank TP4000 should pick up quite a bit on motor, My 01 z had the 4400 yank, but i am also spraying the car so i need a little less stall.

TexasLT1, Yeah i have been to several other tracks but have always like HRP quite a bit better than any other track, that and it is alot closer to me than any other.

Just wait til i get the nitrous sorted out...I made one pass on a .55 jet dry shot. I slammed rev limiter on the 1-2 shift and the 2-3 shift it tapped the limiter, due to the 3.42 gears and the car is tuned for 3.23 gears and it ran low 11's at an insane mph. So i need to get that all sorted out and then maybe i will post some better times with a few more upgrades.
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Old Apr 25, 2005 | 02:12 PM
  #11  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Thanks TexasLT1, but pics always make'em look better, but I'm really all about function over form.

Camarocain: I thought I read in one of your post about you using Nitrous, low 11's thats haulin some tail. Sounds like you will jump right into the 10's when you get the PCM sorted out.

I'm going to try to get into the 10's N/A, but if it proves to be too hard, then I'll go the N2O route also.

Also, 3 of the 4 guys in this thread are from where?................................ Texas. Our state is just like yours only better. LOL that still kills me everytime.
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Old Apr 25, 2005 | 03:13 PM
  #12  
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Car: 1982 Z28
Engine: LS1
Transmission: T56
Originally posted by StngKlr

Also, 3 of the 4 guys in this thread are from where?................................ Texas. Our state is just like yours only better. LOL that still kills me everytime.
I lived in TX for a few years, San Antonio at first and then Killeen for ~2 years.

Driving a car with Tennessee plates always got commentary...
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Old Apr 25, 2005 | 04:13 PM
  #13  
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From: Angleton, TX
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Originally posted by StngKlr
Thanks TexasLT1, but pics always make'em look better, but I'm really all about function over form.

Oh I hear function over form, but it never hurts if you look good while doing it

I'm hoping new clutch/lower gears will help me hit the mid 12's I know the car is capable of. One of these days I'll be running 11's with yall.
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Old Apr 25, 2005 | 07:08 PM
  #14  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Kevinc: 2+ years in Texas qualifies I guess, sorry didnt know that. LOL. Wheres Pasky? That'll make 5.




Originally posted by TexasLT1
I'm hoping new clutch/lower gears will help me hit the mid 12's I know the car is capable of. One of these days I'll be running 11's with yall.
Find an LS1 and put that in, theres some 11's. No J/K, really I'm not running that much more HP than you, so with those mods and a few more I dont see why you couldnt get some 11's. I havent actually ever run a 1/4 so I'm not forsure if I'm in the 11's, but I think I'm close. I could go to Ennis and see, but I think I would only get one shot at it before they kicked me off the track for not having a cage. Our 1/8 track here really dosent mind it, heck I've ran the IROC before with a broken drivers seat.

Oh BTW, since we were talking about having no problems with our swap, of course mine had to go and make me a liar. I was just out in the garage with some buddies checking out what was under the hood and a buddy of mine says, "Why is the belt walking off of the balancer pulley?" I said, "You got me?" So we started fumbling around with it and found that the bolt holding the drivers side stationary pulley had nearly walked itself out. I thought that was rather odd, but I just had to tighten it down and now everything is fine. I guess it could have been worse, especially if I was out on the road and the bolt decided to come all the way out and then I lose the belt or something and be left stranded, but oh well, thought I'd share. I'll go ahead and knock on wood to try and avoid any major mishaps.
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Old Apr 26, 2005 | 05:18 PM
  #15  
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From: ATX
Car: Kitt
Engine: Classified
Transmission: T56
Axle/Gears: Moser/4:11
Mine still doesn't run...
I haven't driven it....goin' on a year now..
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Old Apr 26, 2005 | 05:59 PM
  #16  
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From: Itasca, IL
Car: 92 Camaro RS, 90 Camaro RS
Engine: 346 LS1, 305 TBI
Transmission: 4L60E, 700R-4
Axle/Gears: 10 bolt:3.42, 10 bolt:??
Originally posted by tamatt27
Mine still doesn't run...
I haven't driven it....goin' on a year now..
I feel ya man...im on 10 months now without being able to drive my baby...not only that but I find ways of breaking my car without even driving it. We should create a support group for us motor swappers who have not had the pleasure to drive our cars in several months .
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Old Apr 26, 2005 | 07:08 PM
  #17  
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Haven't gotten to drive mine either

But here's a pic of the swap in progress....sorta took the idea from TexasLT1 on the PCM placement.
Attached Thumbnails What kind of motor to get, LT1 or LS1?-5.jpg  
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Old Apr 27, 2005 | 11:49 AM
  #18  
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From: Houston, TX
Car: 88 Camaro
I know how it is guys, here is a picture of mine. It sat like this for at least 8-9 months while i saved money to try and get my LS1. But finally it came along. At least some of you have your engines and are working on them. I had nothing i could even work on with mine.
Attached Thumbnails What kind of motor to get, LT1 or LS1?-projectls1a1.jpg  
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Old Apr 27, 2005 | 12:05 PM
  #19  
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From: Houston, TX
Car: 88 Camaro
But just for some inspiration...they do get finished!
Attached Thumbnails What kind of motor to get, LT1 or LS1?-ls1done1.jpg  
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Old Apr 27, 2005 | 02:39 PM
  #20  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Sorry to hear about the swaps guys, but it'll get there. Once you get the first drive in, you will find that all of the wait was well worth it. Good luck on the rest of your swaps.
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Old May 3, 2005 | 07:57 AM
  #21  
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From: Marion, Iowa
Car: 92 Camaro
Engine: ZZ4 Crate Engine w/Hot Cam
Transmission: Rebuilt 700R4 with Transgo and MW 3
Axle/Gears: 3.73 Eaton Posi
Not to rain on the LT1 guys' parade, but why would you get an LT1 over an LS1, except for maybe the price savings.

My buddy gets horrible gas mileage in his 94 Z28. It seems to me if you are going through the trouble of doing a non-SBC swap you should go with the best, an LS1 and get a nice flat torque curve. And if not, just throw some expensive cam and heads on a traditional old SBC with an easy to tune carb.

I'm just wondering - LT1 guys straiten me out on this one.
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Old May 3, 2005 | 12:11 PM
  #22  
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
LT1 is basically a true bolt in where with the LS1 you have to use custom motor mounts, or swap the k-member, use the LS1 tank for a easier swap.

Something is wrong with his car if he's getting horrible milage, I've talked to people who are getting 25+ on the interstate with the LT1 and 6-speed depending on the gears.

Don't get me wrong, the LS1's are nice, but still a little pricey is more than likely the main reason.
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Old May 4, 2005 | 09:39 PM
  #23  
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From: Angleton, TX
Car: '92 RS
Originally posted by mdricken
Not to rain on the LT1 guys' parade, but why would you get an LT1 over an LS1, except for maybe the price savings.

My buddy gets horrible gas mileage in his 94 Z28. It seems to me if you are going through the trouble of doing a non-SBC swap you should go with the best, an LS1 and get a nice flat torque curve. And if not, just throw some expensive cam and heads on a traditional old SBC with an easy to tune carb.

I'm just wondering - LT1 guys straiten me out on this one.

At the time I did my swap, LS1's were still rediculously priced since they had only been out for 2 years.

As Klortho said, something is wrong with your buddies Camaro then if he gets horrible gas mileage. I get about 15-18 around town and about 25 on the highway. And I don't drive it like a grandpa.
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Old May 10, 2005 | 12:19 AM
  #24  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Re: What kind of motor to get, LT1 or LS1?

Originally posted by StngKlr
Mine, no problems yet really. Been putting about 100 miles on it every week, not too much, but the car has been holding up nice I guess.

WTF!!!!! Two weeks after I started this thread what happens?????? The pump in the tranny decides to grenade.


I'll get over it in a few days.
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Old May 10, 2005 | 08:15 AM
  #25  
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Car: 1982 Z28
Engine: LS1
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Re: Re: What kind of motor to get, LT1 or LS1?

Originally posted by StngKlr
WTF!!!!! Two weeks after I started this thread what happens?????? The pump in the tranny decides to grenade.

Interesting...we had an '04 GTO at the National F-Body Motorsports Event last week blow a trans pump. He'd had two aftermarket torque converters fail inexplicably, put in a stock replacement, ran three sessions on the road course and it stopped.

We diagnosed it as the pump by removing the cooler lines and observing no fluid flow whatsoever while the engine was running and trans in any gear.
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Old May 10, 2005 | 10:04 AM
  #26  
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ouch. glad I don't have to worry about that
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Old May 10, 2005 | 12:23 PM
  #27  
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by TexasLT1
ouch. glad I don't have to worry about that
same here..



but when you swap pumps, get a upgraded pump..

i donno exactly WTF is diffrent, but a friend of mine has that as his only internal trans mod on a 4200 stall daily driver.... and has over 50,000 miles with that converter.... his trans temp stays at a constant 150... summer or winter.


somehow, i think that pump has somthing to do with it... thats the only thing changed....
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Old May 10, 2005 | 01:59 PM
  #28  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Originally posted by TexasLT1
ouch. glad I don't have to worry about that
Yeah but its really a double edged sword, put a T56 in and I'll be blowing rearends left and right, and of course a stock 4L60E isnt going to hold to my kind of spirited driving, but the stock rear will take more of that with an auto. So sometime or another I'll have to fork over the big bucks for an aftermarket rear or tranny.

Right after I got my car on the road last year the same thing happened. So I just had a stock replacement pump put in and said F it. Now I'm regreting that decision, but this gives me a good chance to swap to a better converter. The Midwest converter has always dribbled a little bit fluid which is annoying. I'm gonna step up to a Yank this time. Also I'll be ordering a complete overhaul kit for the tranny, kevlar this hardened that and see how long it holds up.

I think its fair to say the car will be out of order for awhile. The cam is going in, the fuel tank is coming out for a high volume pump, better gears are coming and a little bit of spray maybe.
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Old May 10, 2005 | 02:15 PM
  #29  
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Car: 1982 Z28
Engine: LS1
Transmission: T56
I had one bogie during my ~1100mi trip to Memphis and back for the big F-Body event.

During day 1 of the road course segment, I got a check eng light...P0200 Injector Circuit Voltage. I'd had this intermittently once before, changing plug wires got rid of it. (injectors and ign coils share the same 12VDC feed on each bank)

I cleared the code, finished the day seeing no more instances of it.

Day 2 it came back during the 4th session, last of the day. The car ran fine, so I cleared it and went back to the hotel.

Next morning it was back, and I had a noticeable misfire at >3000 revs. While removing the plug wires, #3 plug wire slid right off the plug end with very little resistance...the aluminum end was still on the plug. Somehow the crimped-on end came uncrimped from the wire. Boot and wire were fine, no signs of damage or burns. They're Taylor wires and Thunder is covering it under warranty.

I replaced the set w/ NAPA pieces locally, got P0200 again after a few hours of road trip, found #7 plug wire not seated...must have not gotten a "click" during installation. Seated #7, rechecked the others, and no further issues from Knoxville TN all the way back to NJ.

I found one coil ~4KOhms lower resistance than the other 7 during the troubleshoot, so a replacement is on the way and this one will go in the pit box as a spare.
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Old May 10, 2005 | 03:03 PM
  #30  
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by StngKlr
Yeah but its really a double edged sword, put a T56 in and I'll be blowing rearends left and right..........
i know what you mean.. lol
9" should be here at the end of summer though.. should take care of that.

i havnt ordered my ETstreets yet because i know that if i do, i will go thru my rear, my spare rear, and my backup stock 2.73 rear, before summer is over.. lol


Originally posted by StngKlr
I'm gonna step up to a Yank this time. Also I'll be ordering a complete overhaul kit for the tranny, kevlar this hardened that and see how long it holds up.
what stall?


Originally posted by StngKlr
I think its fair to say the car will be out of order for awhile. The cam is going in, the fuel tank is coming out for a high volume pump, better gears are coming and a little bit of spray maybe.
what cam?
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Old May 10, 2005 | 05:56 PM
  #31  
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From: Paris, Tx. USA
Car: 89 RS
Engine: LS1
Transmission: TH350
Originally posted by MrDude_1
what stall? what cam?

Probably gonna stick with something around 3000 to 3500 which is a little more nitrous friendly.

I've had this TR224 Cam kit for about a year now, I think its time for it to go in.

Good news is, I buy all the rebuild parts for the tranny online and a buddy of mine from the tranny shop comes over and puts them in on my work bench. All for a couple of cold ones.
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