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

Gen 4 rotating assembly in gen 3 engine

Thread Tools
 
Search this Thread
 
Old Aug 7, 2017 | 05:54 PM
  #1  
cullenjames1's Avatar
Thread Starter
Teching In
 
Joined: Jun 2017
Posts: 6
Likes: 0
From: Houma, Louisiana
Default Gen 4 rotating assembly in gen 3 engine

Just finished building a 2001 5.3 with 2007 gen 4 58x rotating assembly for a turbo foxbody/th400 combination. I wanted to the beefier rods and no shop around me balances rotating assembies, so I used the gen 4 crank too.
I've got a friend who accidentally order a 58x dragon slayer crank for a build in a gen 3 engine and had to use the lingenfelted converter box. It's been a nightmare with startup problems. I don't want that mess.
We've been trying to brain storming ways around it with using an e38 computer and changing the throttle body to drive by wire.
Question: is it possible to use a gen 4 timing gear, cover, and sensor on the gen 3 block? And possibly drilling the side of the block for new style knock sensors, then using a gen 4 harness into the e38 pcm? I know it's a lot of hassle but not as much hassle as we've had with that converter box.
Reply
Old Aug 7, 2017 | 06:03 PM
  #2  
truckdoug's Avatar
9 Second Club
10 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Nov 2013
Posts: 6,389
Likes: 558
From: Portlandia
Default

or you can press a 24x reluctor on the crank
Reply
Old Aug 7, 2017 | 06:27 PM
  #3  
tech@WS6store's Avatar
LS1Tech Premium Sponsor
iTrader: (2)
 
Joined: Apr 2016
Posts: 4,670
Likes: 250
Default

^ what he said
Reply
Old Aug 7, 2017 | 06:31 PM
  #4  
cullenjames1's Avatar
Thread Starter
Teching In
 
Joined: Jun 2017
Posts: 6
Likes: 0
From: Houma, Louisiana
Default

Originally Posted by truckdoug
or you can press a 24x reluctor on the crank
is it just that easy? Won't it need to be balanced?
Reply
Old Aug 7, 2017 | 06:33 PM
  #5  
tech@WS6store's Avatar
LS1Tech Premium Sponsor
iTrader: (2)
 
Joined: Apr 2016
Posts: 4,670
Likes: 250
Default

No it wont need to be balanced. The reluctor wheel does need to be indexed. there is a special tool for that.
Reply
Old Aug 8, 2017 | 09:27 PM
  #6  
G.I. Turbho's Avatar
Teching In
 
Joined: Jul 2017
Posts: 8
Likes: 0
From: Des Moines, IA
Default

Is it possible at this point to purchase a new factory GEN 4 crank with a 58x already on it? Aren't many of the cranks interchangeable?

I know the cover, cam gear, and sensors need relocated, but as far as the crank goes, could it be as simple as dropping in a new GEN 4 crank with the right wheel?
Reply
Old Aug 8, 2017 | 09:29 PM
  #7  
tech@WS6store's Avatar
LS1Tech Premium Sponsor
iTrader: (2)
 
Joined: Apr 2016
Posts: 4,670
Likes: 250
Default

We have 58x stock casting cranks available.
Reply
Old Aug 8, 2017 | 10:50 PM
  #8  
G.I. Turbho's Avatar
Teching In
 
Joined: Jul 2017
Posts: 8
Likes: 0
From: Des Moines, IA
Default

With all that said, is there any reason a stock Gen 4 crank w/ 58x wheel shouldn't fit?

Like one from a 2010 Silverado 2500?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 8, 2017 | 11:44 PM
  #9  
tech@WS6store's Avatar
LS1Tech Premium Sponsor
iTrader: (2)
 
Joined: Apr 2016
Posts: 4,670
Likes: 250
Default

Depending on what it came out of vs what you are putting it in to it may need balancing.
That is about it.
Reply




All times are GMT -5. The time now is 07:08 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE