C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:
View Poll Results: How much did your LSX conversion cost?
0-2,499
3
18.75%
2,500-4,999
4
25.00%
5,00-7,499
3
18.75%
7,500-9,999
2
12.50%
10,000-14,999
3
18.75%
15,000
1
6.25%
Voters: 16. You may not vote on this poll

How much did your LSX conversion cost?

Thread Tools
 
Search this Thread
 
Old Aug 25, 2012 | 06:47 PM
  #1  
jim2527's Avatar
jim2527
Thread Starter
Race Director
20 Year Member
Liked
Top Answer: 1
Top Answer: 3
 
Joined: Apr 2003
Posts: 19,352
Likes: 654
From: Tampa, Florida
Default How much did your LSX conversion cost?

How much did you spend and did you go 'all out' or 'economy'. I know...that sounds like an oxymoron.

I was thining of doing the conversion and threw $10K at my brother he said it could be done for alot less.
Reply
Old Aug 25, 2012 | 07:18 PM
  #2  
PatsLs1vette's Avatar
PatsLs1vette
Le Mans Master
20 Year Member
 
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
Default

Originally i did it for under 1800.ive since changed things including the motor from a ls1 to a ls6 so i in the 3000 range now.
Reply
Old Aug 25, 2012 | 08:07 PM
  #3  
Quil's Avatar
Quil
Drifting
15 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Dec 2007
Posts: 1,309
Likes: 24
From: Coastal Georgia
C2 of the Year Finalist - Modified 2020
Default

I got my LS1 and T56 for right at $3000, and I probably have another 2-3k in the swap itself. Compared to some of the really nice ones I've seen on here, that's fairly "economy".
Reply
Old Aug 25, 2012 | 08:34 PM
  #4  
mrvette's Avatar
mrvette
Team Owner
Active Streak: 120 Days
Liked
Loved
Community Favorite
 
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Default

Originally Posted by Quil
I got my LS1 and T56 for right at $3000, and I probably have another 2-3k in the swap itself. Compared to some of the really nice ones I've seen on here, that's fairly "economy".
INteresting thread, my son is doing a LS conversion on a '57 Chebby pickup and has a 4.8 LS engine already....I hope he goes automatic tranny for it....he in Berzerkly Ca. so it's a long way to be much help....

but going to point him to this thread....
Reply
Old Aug 25, 2012 | 09:24 PM
  #5  
74modified's Avatar
74modified
Burning Brakes
 
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Default

I know people will disagree, but I could do a low budget swap for less than $ 1,500. It would be a fairly high mile truck 4.8 or 5.3 with the late model 4 speed auto, self built motor mounts & wiring harness, exhaust manifolds, and a basic stock tune on the ECM. You could knock off $400 or $500 if you only did the engine and used an existing transmission. I have a little over $1,400 in my 5.3 with TR6060 six speed. My 70,000 mile engine is in great shape, and the trans is like new. After working out all the other changes to my C3, I may build a 6.0 to drop in. You could also buy a crate engine, stainless headers, fabricated motor mounts and wiring, have extensive tuning and have brand new equipment for much much more.

Last edited by 74modified; Aug 25, 2012 at 09:27 PM.
Reply
Old Aug 25, 2012 | 09:29 PM
  #6  
Quil's Avatar
Quil
Drifting
15 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Dec 2007
Posts: 1,309
Likes: 24
From: Coastal Georgia
C2 of the Year Finalist - Modified 2020
Default

You can do it VERY low budget, depending on the amount of fabrication you can do yourself. The wiring harness, T56 crossmember, and hydraulic clutch setup alone cost me over a grand.
Reply
Old Aug 25, 2012 | 09:30 PM
  #7  
Quil's Avatar
Quil
Drifting
15 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Dec 2007
Posts: 1,309
Likes: 24
From: Coastal Georgia
C2 of the Year Finalist - Modified 2020
Default

Originally Posted by mrvette
INteresting thread, my son is doing a LS conversion on a '57 Chebby pickup and has a 4.8 LS engine already....I hope he goes automatic tranny for it....he in Berzerkly Ca. so it's a long way to be much help....

but going to point him to this thread....
Point him here as well...

http://ls1tech.com/forums/conversions-hybrids-28/

There is no better source of information for LSx swaps.
Reply
Old Aug 25, 2012 | 09:39 PM
  #8  
74modified's Avatar
74modified
Burning Brakes
 
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Default

Originally Posted by Quil
Point him here as well...

http://ls1tech.com/forums/conversions-hybrids-28/

There is no better source of information for LSx swaps.
And the big Q always has thoughtful comments
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 25, 2012 | 09:44 PM
  #9  
jordan89's Avatar
jordan89
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Default

Originally Posted by mrvette
INteresting thread, my son is doing a LS conversion on a '57 Chebby pickup and has a 4.8 LS engine already....I hope he goes automatic tranny for it....he in Berzerkly Ca. so it's a long way to be much help....

but going to point him to this thread....
Interesting, is your son in school at Berkeley? I'm asking because I'm at school up here as well.
Reply
Old Aug 26, 2012 | 01:37 PM
  #10  
Garys 68's Avatar
Garys 68
Melting Slicks
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2004
Posts: 2,655
Likes: 19
Default

It's pretty difficult to do a budget swap in a C3 for under $2500. You NEED things like the low profile inake/oil pan, low profile FEAD, electric fans, etc.
A lot of people "forget" about things like exhaust mods, fans/controllers, hoses, driveshaft/yoke, trans mods, CAI, specialty connectors/adapters, and the list goes on. Then there are the things you would be changing with any engine swap/rebuild, pretty much any rubber piece, clutch, etc. Then the cost of tools like NPT tap set to modify the water pump heater inlet/outlet or huge metric allen wrench fot the block plugs.
Then there are the "while I'm at its".
My 68 with a 6.0 LQ9, Richmond 6 speed, and Vintage Air was probably around $10k. But on my 72 442 with a 5.3 I was able to do it for around $2500 and reuse most of the truck stuff.
Reply
Old Aug 26, 2012 | 07:33 PM
  #11  
72LS1Vette's Avatar
72LS1Vette
Safety Car
20 Year Member
 
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
Default

The cost will also depend on how much of the work you can do yourself. The only 2 things on my swap that were done by others were welding the offset shifter mount and welding up exhaust pipes between the headers and the crossmember. I did all of the other work myself with the help of my 2 sons.

There were several of us who were "early adopters" of the LS engine swap in a C3 and all of us made many contributions to the giant LS swap thread. That thread probably contains all of the infomation anyone would need to put a LS engine in a C3 with plenty of variations for wiring, fuel systems, etc.

There are a lot more commercial parts available now for swaps so the need for fabrication is reduced a bit but no 2 installs are the same.



Rick B.
Reply
Old Aug 26, 2012 | 08:00 PM
  #12  
Corey_68's Avatar
Corey_68
Team Owner
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 1999
Posts: 34,454
Likes: 665
From: Republic of Texas
Default

You can do it on the cheap, but what you save on the front end, you pay on the back end. By that I mean sure you can score a high mileage 5.3, LQ4, LS1 cheap, used sensors, etc but sooner rather than later those things will need to be rebuilt or replaced. I'd rather do it right the first time, and not worry when a high mileage engine, trans, etc will fail.

There are so also hidden costs many are unaware about.
Reply
Old Aug 26, 2012 | 11:22 PM
  #13  
74modified's Avatar
74modified
Burning Brakes
 
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Default

Originally Posted by Corey_68
You can do it on the cheap, but what you save on the front end, you pay on the back end. By that I mean sure you can score a high mileage 5.3, LQ4, LS1 cheap, used sensors, etc but sooner rather than later those things will need to be rebuilt or replaced. I'd rather do it right the first time, and not worry when a high mileage engine, trans, etc will fail.

There are so also hidden costs many are unaware about.
You are very correct, all true. And there are many hidden costs if you do not research before jumping in. If you pay someone else to do ALL the work, it could cost more than the value of your car. Here is another way to look at it. If I buy a used C5, all you said above applies, but I am limited in what I can inspect before purchase. The difference with the swap is: I saw/heard the engine run before buying, Had a chance to inspect it internally before installing. Used new fuel pump and O2s, and examined every part I installed. The used C5 could have just as many "maintenance" costs as the swap. I enjoy the challenge, I could easily buy a F body or C5 oil pan but chose to modify the truck pan. The cleaned up truck intake fits under my Daytona hood, but I could have easily bought (~$100) an LS1 intake from an upgrading Fbody driver. And yes my opinion is low dollar as well, it is worth every penny you paid for it.
Reply
Old Aug 27, 2012 | 06:14 AM
  #14  
riggs 74's Avatar
riggs 74
Drifting
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Oct 2008
Posts: 1,496
Likes: 6
From: springfield ohio
Default

Well mine got pretty expensive because nothing was left untouched, and I used very little from my original purchase.

$4500 LS2/4L70E drop out unit with 6800 miles.

$4200 to rebuild motor to a forged stroker 402 because the low mileage motor spune a rod bearing.

$3400 for the LS2 Trick Flow head and cam combo top end kit.


$1000 for odd and ends for the motor.


$4400 for a new stage 5 4L70E transmission that will withstand the 600+ HP form the LSX.


You guys can do the math and see that this build become very expensive but the end result is a 600 + HP car that will put a smile on my face every time I take it out.


To do this same build over again I believe I could do it for half this.



Riggs
Reply
Old Aug 27, 2012 | 02:45 PM
  #15  
74modified's Avatar
74modified
Burning Brakes
 
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Default

Originally Posted by riggs 74
Well mine got pretty expensive because nothing was left untouched, and I used very little from my original purchase.

$4500 LS2/4L70E drop out unit with 6800 miles.

$4200 to rebuild motor to a forged stroker 402 because the low mileage motor spune a rod bearing.

$3400 for the LS2 Trick Flow head and cam combo top end kit.


$1000 for odd and ends for the motor.


$4400 for a new stage 5 4L70E transmission that will withstand the 600+ HP form the LSX.


You guys can do the math and see that this build become very expensive but the end result is a 600 + HP car that will put a smile on my face every time I take it out.


To do this same build over again I believe I could do it for half this.



Riggs
You ended up with a nice swap, and I am sure it is worth the time and money to you when you drive it.
Reply
Old Aug 27, 2012 | 04:27 PM
  #16  
Quil's Avatar
Quil
Drifting
15 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Dec 2007
Posts: 1,309
Likes: 24
From: Coastal Georgia
C2 of the Year Finalist - Modified 2020
Default

Originally Posted by riggs 74
Well mine got pretty expensive because nothing was left untouched, and I used very little from my original purchase.

$4500 LS2/4L70E drop out unit with 6800 miles.

$4200 to rebuild motor to a forged stroker 402 because the low mileage motor spune a rod bearing.

$3400 for the LS2 Trick Flow head and cam combo top end kit.


$1000 for odd and ends for the motor.


$4400 for a new stage 5 4L70E transmission that will withstand the 600+ HP form the LSX.


You guys can do the math and see that this build become very expensive but the end result is a 600 + HP car that will put a smile on my face every time I take it out.


To do this same build over again I believe I could do it for half this.



Riggs
And I was just getting ready to ask which one of you voted $15,000...
Reply
Old Aug 27, 2012 | 05:52 PM
  #17  
jim2527's Avatar
jim2527
Thread Starter
Race Director
20 Year Member
Liked
Top Answer: 1
Top Answer: 3
 
Joined: Apr 2003
Posts: 19,352
Likes: 654
From: Tampa, Florida
Default

It seems like $5-10,000 budget will get a quality mid-level conversion.

I saw a Caddy LS7 w/ T56 for $7k...that'd make a nice swap!!
Reply

Get notified of new replies

To How much did your LSX conversion cost?

Old Aug 27, 2012 | 06:16 PM
  #18  
Corey_68's Avatar
Corey_68
Team Owner
25 Year Member
Loved
Community Favorite
Top Answer: 1
 
Joined: Feb 1999
Posts: 34,454
Likes: 665
From: Republic of Texas
Default

Originally Posted by jim2527
It seems like $5-10,000 budget will get a quality mid-level conversion.

I saw a Caddy LS7 w/ T56 for $7k...that'd make a nice swap!!
I think you mean LS6, the LS7 was only offered in the C6 Z06.

Last edited by Corey_68; Aug 28, 2012 at 01:50 PM.
Reply
Old Aug 27, 2012 | 07:05 PM
  #19  
riggs 74's Avatar
riggs 74
Drifting
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Oct 2008
Posts: 1,496
Likes: 6
From: springfield ohio
Default

Yes, the best advice to save as much money as you can is research, research, research. You can make so many mistakes when you haven't done your research, but for the C3's there doesn't seem to be one set standard that is being followed and in some cases, work work for one doesn't work for the other.

I do have a lot invested in my LSx swap, but outside my original purchase of 4500 for the stock setup, I am glad I took it to the next level with all the high performance goodies that are in my setup. The car is a real adrenalin rush, its violent and sounds like war when you stand on the throttle.

There are also other cost that I didn't mention like the stainless headers and full stainless exhaust and much,much more.


Here is what it looks like at the moment and it not finished. This picture real doesn't do it any Justice




Riggs
Reply
Old Aug 28, 2012 | 01:36 PM
  #20  
Quil's Avatar
Quil
Drifting
15 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Dec 2007
Posts: 1,309
Likes: 24
From: Coastal Georgia
C2 of the Year Finalist - Modified 2020
Default

Oh, we posting pics now?

Reply



All times are GMT -4. The time now is 03:32 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE