Ls2 can it go to 455
Thread Starter
Registered User
Joined: Oct 2012
Posts: 2
Likes: 0
From: adelaide south australia
Ls2 can it go to 455 Hey guys I am really new to this site. I have a couple of ls motors one in an Holden ss and the other has just been squired for my dad 1980 trans am, I also am a number 2 mechanic on a Mosler GT3 team. Anyway I was wondering if the ls2 will go out to 455 comfortably if so what's the best way
Aluminum lsx blocks cant be bored out. They can have a slight hone but nothing else. Iron blocks can be bored, but to get a 455 you will need an aftermarket block, or a sleeved block.
FormerVendor
Joined: Dec 2005
Posts: 250
Likes: 1
Not without sleeveing it. If you're big in road racing, I wouldn't go over a 4" stroke and with the limited bore size on stock sleeve block and 4" stroke you aren't even close.
4" bore and even a 4.125 stroke is only 414 ci. An LS3 block will give you a larger 4.060" bore and with a 4.125 stroke you will have a 427. 4.125" stroke on a stock cylinder length tends to have piston rock and wear issues, so road racing wouldn't be a good idea in my opinion.
4" bore and even a 4.125 stroke is only 414 ci. An LS3 block will give you a larger 4.060" bore and with a 4.125 stroke you will have a 427. 4.125" stroke on a stock cylinder length tends to have piston rock and wear issues, so road racing wouldn't be a good idea in my opinion.
455 cube LS2 Yes they will go to 455" for naturally aspirated builds and larger via sleeving and a stroke increase. I sleeve a lot of blocks with Darton Seal Tight dry liners for 454" builds, 4.185" bore 4.125" stroke. If you need that 455" number 4.190" bore 4.125" stroke will get you there. Rings are more readily available in 4.185" however.
Another way to get there is via a 4.130" bore and 4.25" stroke. This will leave sleeve wall material for future rebuilds. Using a 4.25" stroke, max. engine size with 4.185" bore will be 468".
Steve
Another way to get there is via a 4.130" bore and 4.25" stroke. This will leave sleeve wall material for future rebuilds. Using a 4.25" stroke, max. engine size with 4.185" bore will be 468".
Steve
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Thanks heaps guys in recon 412 will be enough it's to go into a 1980 trans am so I just want to build I nice reliable grunty engine.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
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
Staging Lane
Joined: Jun 2012
Posts: 92
Likes: 0
Thats the first consideration, then getting as many cubes as you can within your budget is the next thing and you have to consider the top end at the same time. Power is made in the heads so balanace the engine budget by seperating the top and bottom end and looking at them as two peices not one.
