Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

Monza Engine Swap

Thread Tools
 
Search this Thread
 
Old Sep 21, 2010 | 07:13 PM
  #1  
bigguy5994's Avatar
Thread Starter
Teching In
 
Joined: Sep 2010
Posts: 2
Likes: 0
From: Macon, Georgia
Default Monza Engine Swap

Got a 1975 Chevy Monza Towne Coupe- original 2.3 L 4 banger and 4 speed. Want to make street rod- keep it looking stock with bigger tires and wheels and decent engine. I know where there is a 2007 LU3 4.3 Vortec engine and
4L60E transmission complete lift out with all the bells and whistles including the computer and wiring harness. Would this be a good swap and how hard would it be to do? I know I will need bigger coil springs for the front and can get them and have a pair of the factory V8 engine mount plates that will fit my Monza. Not much of a mechanic- will have to pay someone to do the install but this has been my dream ride for almost 30 years and I want to do it right. Any help would be appreciated- thanks!!! I live in Macon, Georgia.
Reply
Old Sep 21, 2010 | 07:31 PM
  #2  
zipster's Avatar
TECH Regular
iTrader: (5)
 
Joined: Feb 2010
Posts: 456
Likes: 0
From: Celina, Texas
Default

Depending on your goals, I would go with a 5.3/4l60e. There probably is not that much difference in weight. Iron/iron 4.3 vs iron/aluminum 5.3, If you are getting the 4.3 for next to nothing, I would consider it.

A 4.3 or 5.3 would both be a good swap, since there is fabrication to do, it should not matter much on engine.
Reply
Old Sep 21, 2010 | 08:06 PM
  #3  
sierrac3_s2000's Avatar
TECH Apprentice
iTrader: (6)
 
Joined: Jan 2004
Posts: 368
Likes: 2
From: Americus, GA
Default

Ate you talking about the 4.8l V8 or the 4.3l V6? If you are planning on the V8 I would imagine you won't need the V8 springs. Most swaps I have seen with original iron head / iron block 4 cylinders ended up either staying the same weight or even losing weight. I have a shop in Americus (about an hour south of Macon) and we do LS swaps. I'll shoot you a PM with my contact info. I would be glad to help answer any questions you have.
Reply
Old Sep 13, 2015 | 11:18 AM
  #4  
Ford_Assassin's Avatar
TECH Enthusiast
Photogenic
Shutterbug
Liked
Loved
iTrader: (4)
 
Joined: Apr 2007
Posts: 730
Likes: 22
From: Jackson, Ca.
Default

Digging up an old thread.....

Updates?
Reply




All times are GMT -5. The time now is 02:52 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE