Boosted LSx Block
Thread Starter
TECH Enthusiast
iTrader: (4)
Joined: Oct 2012
Posts: 507
Likes: 0
From: Moore, Oklahoma
Boosted LSx Block Sorry if this in the wrong section, I have been away for quite some time now.
I have been kicking around the idea of buying a roller and doing a big turbo build. I'm thinking 20+ on maybe a big 102mm+/- turbo. Nothing is been decided on except on these items:
1. Pissing people off lol
2. It going in a 4th gen TA
3. Boosted
4. Gutting everything
5. Small tire car.
6. Lots-O-Power
7. Trailered
I still can't decide on a block for this. I have thought of using a LQ block and going darton sleeves and running a 427. But my concern is, 4-bolt mains. Will I be able to obtain my goal of "fingers crossed" 1200+RWHP??
My other debate is going to be the drive line. I'd like to plan around the surface being the ever so dreamed of, Sticky as all get out, like if you don't have a wheelie bar that **** is flipping haha so should I look at a 9" or is there better?
Fuel, what do you gentlemen/ladies use? I have heard C16 is great for high HP high boost cars. Any opinions?
What kind of system do you guys use? For example are you guys still using the 99-02 PCM and harness or are you doing stand alone systems.
I have been kicking around the idea of buying a roller and doing a big turbo build. I'm thinking 20+ on maybe a big 102mm+/- turbo. Nothing is been decided on except on these items:
1. Pissing people off lol
2. It going in a 4th gen TA
3. Boosted
4. Gutting everything
5. Small tire car.
6. Lots-O-Power
7. Trailered
I still can't decide on a block for this. I have thought of using a LQ block and going darton sleeves and running a 427. But my concern is, 4-bolt mains. Will I be able to obtain my goal of "fingers crossed" 1200+RWHP??
My other debate is going to be the drive line. I'd like to plan around the surface being the ever so dreamed of, Sticky as all get out, like if you don't have a wheelie bar that **** is flipping haha so should I look at a 9" or is there better?
Fuel, what do you gentlemen/ladies use? I have heard C16 is great for high HP high boost cars. Any opinions?
What kind of system do you guys use? For example are you guys still using the 99-02 PCM and harness or are you doing stand alone systems.
Thread Starter
TECH Enthusiast
iTrader: (4)
Joined: Oct 2012
Posts: 507
Likes: 0
From: Moore, Oklahoma
I can't math today lolI have kicked around the idea of going with the formula body style, it would save me money buying a busted V6 model. I'm new to the lexan stuff as well as plexi -if that's even used-
The heads was something that I'm scared of. I have read concerns of head lift and pre detonation. I have a feeling that I am going to have to go with the 6bolt head block. Or should I start changing plans on a 427 and move to a big block setup?
I'm looking at building a BowTie block with twin billet 75's, the 6-bolt heads is what made the decision for me. Along with the fact that they were designed for power-adders, unlike the 6.0 iron block. Sub'd! 
Thread Starter
TECH Enthusiast
iTrader: (4)
Joined: Oct 2012
Posts: 507
Likes: 0
From: Moore, Oklahoma
I did look at the LSX big block 454 but I have no idea how they handle under boost. I know with a 4.125" stroke you tend to play with fire with the wrist pin below the sleeve and I'm not even sure how readably available those 454 blocks are. I'd hate to toast something during a season a d be out. Unlike the LSX small block counterparts are a dime a dozen for some of them, like 4.8, 5.3, 5.7, and the 6.0's haven't seen to many in my area larger then that. Not for a pretty penny so to speak. I originally thought of staying with a 10 bolt for its lightness but it would be an anormous money pit and I do t even think it could handle a launch with 600 ponies and maybe 600+ trq lol
I'm loving the feed back guys!
The LSX 454 is not a big block its the same LSX block they build the 376-427's out of they just change the bore/stroke and its not good for boost the cyl. walls are to thin most including myself stay with a 427 CI 4.125 bore 4" stroke it will make plenty of power boosted!
Thread Starter
TECH Enthusiast
iTrader: (4)
Joined: Oct 2012
Posts: 507
Likes: 0
From: Moore, Oklahoma
Now will I run into any issues with a 4.125" or could I just re-sleeve it with mentioned before darton or which ever?
I'm sorry for anyone's frustration haha I'm still learning
Trending Topics
I'm not sure on how built the crate 376/427/454's are, but you can get away with 4.125" bore easily. I've never heard of anyone having problems with this on the bow tie block. A few folk throw in a longer stroke crank to turn it into a 440ci., but the 427's such an iconic number 
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
TECH Addict
Joined: Jun 2002
Posts: 2,920
Likes: 57
What is your budget? My motor is a billet block 427 with electric water pump, dry sumo, solid roller, jesel rockers, 6 bolt AFR heads done by TEA, dragon slayer crank, crower billet rods, -32cc pistons, Holley High Rise intake, Holley 95mm tb and holds tons of power. But will cost over 20k.