LS2 intake too big for LS4?
Thread Starter
Staging Lane
Joined: May 2011
Posts: 96
Likes: 0
LS2 intake too big for LS4? I know the swap sticky is for the LS1/LS6 which are 5.7L. I bought an LS2 intake but the project isn't up and running. Much like any engine, does anyone think the 6.0L intake is too big for the 5.3? Will it kill the low end? I will still be using the stock TB to maintain the DBW. IMO, the TB is plenty big, just that LS4 intake throat is obviously too small. Thanks.
TECH Apprentice
Joined: May 2010
Posts: 365
Likes: 1
IMHO you can never have too much intake on this car. all the low end power even at stock levels is unusable with the traction handicap. I'm getting ready to do a whole drivetrain build with a 6T75 trans, and either an LS2 or 5.3L aluminum truck block. and I intend on trading as much low end as I can for high rpm screamin HP thats actually usable with this car. Im gonna go with an LS6 intake either way because of the throttle body options, a truck 5.3 DBW throttle body is almost plug and play.
Thread Starter
Staging Lane
Joined: May 2011
Posts: 96
Likes: 0
to V8IMPSS- Let me clarify my application. I'm building a '65 Corvair with a LS4/Porsche 997 trans(6speed)/ C5 Vette suspension configuration. Will be a rear engine configuration. If I have any traction issues, it will be because I'm going sideways. I'm actually keeping the HP kinda low. This trans has a 3.9:1 first gear, and I'd like to be able to use it. While most people use HP to go fast, I'll be using gearing....
I used the LS4 because of it's initial cost and compact size vs. LS1. On the WP I save a couple inches at least. Sounds like the LS2 will be just right. One of the reasons I got the LS2 is because the connectors for the injectors are the same (I believe). Also the LS2 is a less desired intake so it was cheaper.
I used the LS4 because of it's initial cost and compact size vs. LS1. On the WP I save a couple inches at least. Sounds like the LS2 will be just right. One of the reasons I got the LS2 is because the connectors for the injectors are the same (I believe). Also the LS2 is a less desired intake so it was cheaper.
Trending Topics
TECH Apprentice
Joined: May 2010
Posts: 365
Likes: 1
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote https://ls1tech.com/forums/ls4-perfo...vid-watch.html
Now if you wanted to run a LS2 intake, I know of a TB that will work for certain years of the LS4.
https://ls1tech.com/forums/ls4-perfo...ke-option.html
On a side note I scraped the truck intake.
TECH Apprentice
Joined: May 2010
Posts: 365
Likes: 1
Sure
https://ls1tech.com/forums/ls4-perfo...vid-watch.html
Now if you wanted to run a LS2 intake, I know of a TB that will work for certain years of the LS4.
https://ls1tech.com/forums/ls4-perfo...ke-option.html
On a side note I scraped the truck intake.
https://ls1tech.com/forums/ls4-perfo...vid-watch.html
Now if you wanted to run a LS2 intake, I know of a TB that will work for certain years of the LS4.
https://ls1tech.com/forums/ls4-perfo...ke-option.html
On a side note I scraped the truck intake.
I'm assuming that the TB for the LS2 requires the E67 ECU, so '07+....
I was thinking about converting to cable style to save some headaches and have a giant TB beyond porting stock, for less $ than stock.
TECH Apprentice
Joined: May 2010
Posts: 365
Likes: 1
Hmm, alright. But the LS4 TB's didn't change when they switched the ECUs...maybe it would work with both. I'm going to be swapping to the E67 to do the 6A trans, might be back to square 1 with the TB.
Thread Starter
Staging Lane
Joined: May 2011
Posts: 96
Likes: 0
I think I went with the LS2 because it was DBW. I saw someone else did it too so thought why not.
The project isn't running yet and likely won't even have time to fiddle with the new intake in order to make my deadline. pics here
http://www.facebook.com/media/set/?s...4102350&type=3
The project isn't running yet and likely won't even have time to fiddle with the new intake in order to make my deadline. pics here
http://www.facebook.com/media/set/?s...4102350&type=3
The challenge with retaining the LS4 throttle body is that the motor assy and connector stick out behind the mounting flange, so you need to offset the LS4 throttle body and use a 3/4" adapter plate to get everything to clear... IN THEORY - haven't made mine yet.
Thread Starter
Staging Lane
Joined: May 2011
Posts: 96
Likes: 0
So what we decided for now is to stick with the stock intake to make my deadline. I'm only going to drive the car for two weeks while I'm on vacation. After that screw around with the intake and such while I head back to Afghanistan. The guy working on my project has been really challenged. Unless something crazy happens, I think he'll make my deadline.
Thread Starter
Staging Lane
Joined: May 2011
Posts: 96
Likes: 0
Also, I've been looking at the Holley (forgot the name) self tuning computer. Pricey yes, but plug and play, self tuning, and DBW friendly. Would allow to use the stock TB. The ability to tweak the fuel ratio depending on conditions i.e. track, road trip, winter/summer fuel, etc. Can also buy a pre made LSx harness that plugs into the unit. Would be awesome for guys who have to run in smogged areas.
