Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

GenV LT heads on Gen3 LS block

Thread Tools
 
Search this Thread
 
Old Jan 24, 2023 | 10:19 AM
  #21  
Che70velle's Avatar
ModSquad
10 Year Member
Community Builder
Liked
Loved
iTrader: (6)
 
Joined: Jan 2012
Posts: 7,848
Likes: 5,198
From: Dawsonville Ga.
Default

Originally Posted by Sebambam
this is not a gen5 swap! This is taking advantage if the great flowing gen5 heads, the heads are actually great and as a take off cheap. The gen 5 issues are clear but almost never in the heads.
I realize that it’s not a gen5 swap…only giving you an example of folks being letdown. The Gen5 heads do not flow as good as a well set up LS head. The exhaust kills them, and it can’t be fixed. GM turned the exhaust when they reversed the valves. The exhaust port has a wonky turn to it and it just doesn’t work good on a N/A build. Do some research. Headers are expensive also for LT heads. I see your only trying to use what you have here, but there’s a lot of really great flowing LS stuff out there for cheap, that would save you money in the long run. I’ve personally never seen an engine built with adaptors all over it perform very well.
Reply
Old Jan 25, 2023 | 03:38 AM
  #22  
k8busa's Avatar
Staging Lane
 
Joined: May 2009
Posts: 62
Likes: 14
From: MN
Default

Idk......personally seen plenty, also plenty on the normal fb or social media pages. The lt and di require the right people tuning them 110% but absolutely hands down put up extremely impressive off the shelf h/c intakes whether it's a high ram or just ported lt2. This test is straight from btr. I'm nit saying any one is absolutely right or wrong. If guys expect to just slap lt heads on, don't have a semi educated plan of the rest of tge combo in general some may just be complete turds and take few steps backwards. But I'd be willing to bet , alot..... once some variations of head porting, playing with intakes extc, some experimenting the lt head gen3/4 short block will be another great inexpensive option to just keep adding to the ls leggo set


Last edited by k8busa; Jan 25, 2023 at 03:49 AM.
Reply
Old Jan 25, 2023 | 03:53 AM
  #23  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Originally Posted by k8busa
Idk......personally seen plenty, also plenty on the normal fb or social media pages. The lt and di require the right people tuning them 110% but absolutely hands down put up extremely impressive off the shelf h/c intakes whether it's a high ram or just ported lt2. This test is straight from btr
great stuff, that's why I brought up this topic. I'm just baffled that this knowledge isn't much arround in this Forum.
I consider myself a idiot, that why I ask here....

The tuning side sounds like it's more complicated? I am usually using a terminator X setup, is there anything to look out for?
the custom cam is taking care of the swapped ex/in valve pattern, the firing order is the same... so i think there shouldnt be problems...
Reply
Old Jan 25, 2023 | 04:12 AM
  #24  
madmike9396's Avatar
TECH Junkie
15 Year Member
Liked
Loved
Community Favorite
iTrader: (29)
 
Joined: Jan 2009
Posts: 3,392
Likes: 220
From: North Carolina
Default

Following, i just seen where BTR made a specific 230 Cam for a LS3 with stock LT1 heads & trinity intake and made 625hp and 502TQ
Reply
Old Jan 25, 2023 | 07:23 AM
  #25  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Originally Posted by madmike9396
Following, i just seen where BTR made a specific 230 Cam for a LS3 with stock LT1 heads & trinity intake and made 625hp and 502TQ
jup.
I posted a video and a diy installation of the heads.
Reply
Old Jan 25, 2023 | 10:48 AM
  #26  
Che70velle's Avatar
ModSquad
10 Year Member
Community Builder
Liked
Loved
iTrader: (6)
 
Joined: Jan 2012
Posts: 7,848
Likes: 5,198
From: Dawsonville Ga.
Default

Whichever way you go, post up results. Good luck.
Reply
Old Jan 26, 2023 | 08:35 AM
  #27  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Originally Posted by k8busa
L83 heads for smaller ls1 bore, basically sane as ls3 heads. I'm going to drum up a bastard child ls1 lt head setup. The lt heads are great heads especially for na builds
Thanks Bud , i ll see what i do ... i am collecting more infos..
Reply
Old Jan 27, 2023 | 10:04 AM
  #28  
k8busa's Avatar
Staging Lane
 
Joined: May 2009
Posts: 62
Likes: 14
From: MN
Default

I think it's going to be another good option for ls builds, it's just gonna take some testing. Figuring out if you use X intake adapters to run Y intake it just kills power or vice versa. But shops like Gpi pump out many extremely strong h/c na builds, the Lt head is a very potent setup.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Jan 27, 2023 | 11:50 AM
  #29  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,303
Likes: 3,619
From: Central Cal.
Default

Are these heads better than ANY LS heads? If not, what's the point?
I haven't seen this asked, so here I am
Reply
Old Jan 27, 2023 | 12:40 PM
  #30  
k8busa's Avatar
Staging Lane
 
Joined: May 2009
Posts: 62
Likes: 14
From: MN
Default

Here is a really good option for intake. Solves the lt intakes having no port injection problem. Easy bolt on and lt2 intake is a very good performing piece. https://gwatneyperformance.com/produ...nifold-650-hp/


Intake, rails, injectors all ready to take care of intake side with ease. Pretty cost effective as well.
Reply
Old Jan 27, 2023 | 04:14 PM
  #31  
madmike9396's Avatar
TECH Junkie
15 Year Member
Liked
Loved
Community Favorite
iTrader: (29)
 
Joined: Jan 2009
Posts: 3,392
Likes: 220
From: North Carolina
Default

Reply
Old Jan 27, 2023 | 08:08 PM
  #32  
LCBE's Avatar
Teching In
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2009
Posts: 35
Likes: 14
Default

Btr needs to do a deep dive into all the specifics of the test. Compression being a big part of it.
Reply
Old Jan 27, 2023 | 09:49 PM
  #33  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Originally Posted by G Atsma
Are these heads better than ANY LS heads? If not, what's the point?
I haven't seen this asked, so here I am
yup that's the main question.
If so, then it makes sense I have different feedback. CAM MOTION basically said if you not looking for power above 5500rpm do not bother uts a waste of money.
that's the feedback after I asked for a custom cam.
Reply
Old Jan 28, 2023 | 01:24 AM
  #34  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,303
Likes: 3,619
From: Central Cal.
Default

Originally Posted by Sebambam
yup that's the main question.
If so, then it makes sense I have different feedback. CAM MOTION basically said if you not looking for power above 5500rpm do not bother uts a waste of money.
that's the feedback after I asked for a custom cam.
I would heed that advice. Cam Motion knows their ****...
Reply
Old Jan 29, 2023 | 01:59 PM
  #35  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

So I spend 45 min today
relocating the dowel pins to the LS location.
Just enlargen this holes with a drill.



Then also find out that the LS headbolts will work.
Use the Long ones. 3x in the head. And on all of the exhaust side.
2x mid lenght on the 2 outer L+R, Inside the head.

The also drill out 2 partially drilled bosses on the L+R corners of the "INTAKE" side of the head to accomodate 2x short bolts , each head.



As headgaskets you use LS3 or LS9gaskets.

So it's very easy to make them fit.


Reply
Old Jan 29, 2023 | 03:29 PM
  #36  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Btw since I am using a 58x crank.
I know I get a 4x cam gear
But do I need the chain tensioner as well?
Does this affect the timing cover cam sensor, if I don't have the plastic tensioner?
Reply
Old Jan 30, 2023 | 09:08 AM
  #37  
grinder11's Avatar
TECH Junkie
20 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Sep 2004
Posts: 3,212
Likes: 1,612
From: Michigan & Florida
Default

Originally Posted by Sebambam
Btw since I am using a 58x crank.
I know I get a 4x cam gear
But do I need the chain tensioner as well?
Does this affect the timing cover cam sensor, if I don't have the plastic tensioner?
"Tensioner" is actually incorrect. It's is more of a guide. It adds no tension whatsoever. I prefer to run it in my LS7, because I think it reduces noise made by the chain freely whipping around. Do you need it. Probably not. The first 4 years or so of the LS1, the blocks had no guide. As I said, it may not be mandatory, but I think it's a better setup with one than without....
Reply
Old Jan 30, 2023 | 10:18 AM
  #38  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Originally Posted by grinder11
"Tensioner" is actually incorrect. It's is more of a guide. It adds no tension whatsoever. I prefer to run it in my LS7, because I think it reduces noise made by the chain freely whipping around. Do you need it. Probably not. The first 4 years or so of the LS1, the blocks had no guide. As I said, it may not be mandatory, but I think it's a better setup with one than without....
the whole LS1 , gen3 and Gen3/4 crossovers don't have it.
It's a gen 4 block in order to use it I would have to drill and tap the block, which I want to avoid if not needed.

So it doesn't have any functionality with the gen 4 front cover cam sensor? If not I don't add it.
Reply
Old Jan 30, 2023 | 07:14 PM
  #39  
MuhThugga's Avatar
TECH Fanatic
15 Year Member
Photogenic
 
Joined: Jul 2007
Posts: 1,802
Likes: 333
From: Wilmington, De
Default

Originally Posted by k8busa
Here is a really good option for intake. Solves the lt intakes having no port injection problem. Easy bolt on and lt2 intake is a very good performing piece. https://gwatneyperformance.com/produ...nifold-650-hp/


Intake, rails, injectors all ready to take care of intake side with ease. Pretty cost effective as well.
That looks like a good option. I'd avoid any sort of LS intake adapter as I haven't seen an instance where an adapter didn't hinder flow.
Reply
Old Jan 31, 2023 | 08:29 AM
  #40  
Sebambam's Avatar
Thread Starter
TECH Apprentice
5 Year Member
 
Joined: Nov 2015
Posts: 384
Likes: 53
Default

Originally Posted by MuhThugga
That looks like a good option. I'd avoid any sort of LS intake adapter as I haven't seen an instance where an adapter didn't hinder flow.
yea and those come with injectors
if you do the math:
adapters 220$
used LS3/7 intake 200 without rails 350min with rails
Injectors min 300$

so that option is actually great ...
only thing you need is a 92/102mm TB ( 120 -160$)
And its all brand new
Reply



All times are GMT -5. The time now is 03:09 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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