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Monza Engine Swap

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Old 09-21-2010, 07:13 PM   #1
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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.
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Old 09-21-2010, 07:31 PM   #2
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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.
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Old 09-21-2010, 08:06 PM   #3
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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.
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Old 09-13-2015, 11:18 AM   #4
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Digging up an old thread.....


-1974 K5 Blazer 2wd: 6.0 LQ4 | LS9 Head Gaskets | Head Studs | Built 4L80e |RevMax Billet 3600 9.5" | BW S475 T6/1.32 Turbo| BTR Turbo Cam | FMIC
-1975 Monza: 5.3 LM7 | LS9 Head Gaskets | Head Studs | Built TH350 | Precision Billet 3000 10" | GSP T-72 T4 .96 Turbo | LS6 Cam | E85 | Meth Injection

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1975, 43, 53, 60l, banger, chevy, engine, ls1, lu3, monza, motor, mount, sale, swap, v6, vortec

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