Forced Induction Iron V.S. Alloy
Thread Starter
TECH Enthusiast
Joined: Sep 2010
Posts: 580
Likes: 0
From: North Central Ohio
Forced Induction Iron V.S. Alloy Most folks building FI set-ups seem to use the LQ4/9 blocks as 370,390,402,or408 is there a reason a LS2 402 or 416 LS3 would not be up to the task of 750-980 FWHP?
watch out...i just posted this and the first reply was getting grilled for "not searching"...dont know why everybody screams if you dont search first! ya know, its not like some ppl like to be in a active thread where you can post your own questions, and not have to read 12 pages into a thread thats a year old!
https://ls1tech.com/forums/forced-in...for-i-buy.html
https://ls1tech.com/forums/forced-in...for-i-buy.html
Thread Starter
TECH Enthusiast
Joined: Sep 2010
Posts: 580
Likes: 0
From: North Central Ohio
watch out...i just posted this and the first reply was getting grilled for "not searching"...dont know why everybody screams if you dont search first! ya know, its not like some ppl like to be in a active thread where you can post your own questions, and not have to read 12 pages into a thread thats a year old!
https://ls1tech.com/forums/forced-in...for-i-buy.html
https://ls1tech.com/forums/forced-in...for-i-buy.html
Seriously, I don't do well finding stuff here I usually pose the question in ASK and it finds answers here but I do like the responces fellas post here.
An LS2 is a stronger block with thicker sleeves than an LS1. So start with that a minimum. Also pinning the main caps prevents them from walking around even though they already have 6 bolt caps. At your desired power levels pinning the main caps probably isn't needed.
Plenty of people making 900rwhp+ on stock LS2/LS3 blocks and stock crank with good rods/pistons.
If you are running a supercharger an aftermarket crank would be a good choice due to the added tension on the crank snout.
Plenty of people making 900rwhp+ on stock LS2/LS3 blocks and stock crank with good rods/pistons.
If you are running a supercharger an aftermarket crank would be a good choice due to the added tension on the crank snout.
but im taking the chance on the ls3! ill keep ya'll posted...
going to go scat crank and arp"d mains...ill take trust in a sponsor of tech! You read about too many ls3 powered cars now days with 8-1k rwhp and not many problems. I think too many people see something they dont like like thinner sleeve thickness and shy away because there use to what they have...ill trust the builder! Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
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
The aluminum blocks are simply not as strong and have a higher price tag. You can definitely use an aluminum block as long as you are willing to pay for the right parts. For example we can sell you a 408 rated at 900HP for $3849 OR and LS3 rated to 900HP for $4799. Both are great blocks and will take a similar beating but there is a decent difference in price. You will have the ability to get away with a little more oops factor in the iron block. If you break a piston in your 402CI LQ9 you have plenty of Cyl wall to build again, If you do the same in the LS3 you will be hard pressed to do the same. That being said if you are concerned with the weight OR are just simply wanting aluminum there is no reason not to go that route with the intended power output you are looking to make.
