How much HP can I get on a stock L99 Block b4 needing to change the block to a 427 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

YoungWithACamaro2SS · 04-05-2013, 11:32 AM

I have a stock L99 Camaro 2012. To make it into a 427 do I have to swap out the block? Or can my stock block be upgraded to be a 427 with upgrades to the stock 376 block?

Also how much Horsepower can be upgraded with a Supercharge kit on a 376 cu in block is there a limit to it? Before having to upgrade to a bigger block. Ima rookie when compared to some of you guys who been in modding for years so I appreciate any help!

MikeSVX · 04-05-2013, 12:16 PM

How much money you got, and what are the other requirements(driveability, street legal, ect)? They've built 1.8L 4 cylinder engines to make 800 - 1000HP. The engines don't last too long, they aren't street legal, and are exspensive as hell. You can do just about anything with the right amount of money. As for as strocking the LS3 out to a 427, I don't know, but I would say it would be better to swap out the block too.

Bomino · 04-05-2013, 12:27 PM

Generally You can get to around 550rwhp+/- without touching the block or its internals with f/I and Bolt ons.. Past that you want forged internals for durability. Then the sky's the limit. But $$$

YoungWithACamaro2SS · 04-05-2013, 12:41 PM

Quote:

Originally Posted by MikeSVX

How much money you got, and what are the other requirements(driveability, street legal, ect)? They've built 1.8L 4 cylinder engines to make 800 - 1000HP. The engines don't last too long, they aren't street legal, and are exspensive as hell. You can do just about anything with the right amount of money. As for as strocking the LS3 out to a 427, I don't know, but I would say it would be better to swap out the block too.

I would like to keep the original block, since I know getting a new block would be $$$ which I'm not willing to spend. I rather just keep the same block but upgrade it. But first I wanted to get some info as to how much HP i can get with the stock block if i supercharge it without having to change it to a bigger block due to the high cost. I guess I'm trying to be as efficient as I can but have a decent amount of HP.

YoungWithACamaro2SS · 04-05-2013, 12:46 PM

Quote:

Originally Posted by Bomino

Generally You can get to around 550rwhp+/- without touching the block or its internals with f/I and Bolt ons.. Past that you want forged internals for durability. Then the sky's the limit. But $$$

Wow seriously?,

yea I guess I'd like to get more bang for my buck lol. I'm not too crazy about getting 800+ HP about 600 HP would be fine for me

so what would get around 550 rwhp without touching the block? CAI?, Full Exhaust?, Long Tube Headers?, Tune?

Aqua_Blue_SS · 04-05-2013, 12:51 PM

I have a maggie with roto fab intake. Everything else is stock. Dyno'd at 560 the other day. Needs headers tho.

YoungWithACamaro2SS · 04-05-2013, 12:58 PM

Quote:

Originally Posted by DurtyZ

I have a maggie with roto fab intake. Everything else is stock. Dyno'd at 560 the other day. Needs headers tho.

Hmmmm... I would have thought you needed more upgrades when getting a supercharged intake manifold. Not even a tune?

isn't it bad for the engine if you don't custom tune it? Fuel injectors, bored heads/pistons, pulleys etc.?

S3XPanther · 04-05-2013, 05:58 PM

There's the block, then there's the rotating assembly.....

2SS45th · 04-05-2013, 06:16 PM

The LS3 block is a decent setup, the internals are the major disadvantage. With a forged rotating assembly I'd take on to 700whp and feel confident. Past that, I get nervous with 4 bolt heads, major reason I have an LSX in my car. If you want 600 crank hp, not wheel, you can leave the internals alone. Supporting mods aren't even needed really, 500whp on a blower car is easy to hit without an intake or headers.

litle88 · 04-05-2013, 06:47 PM

Quote:

Originally Posted by YoungWithACamaro2SS

I have a stock L99 Camaro 2012. To make it into a 427 do I have to swap out the block? Or can my stock block be upgraded to be a 427 with upgrades to the stock 376 block?

Also how much Horsepower can be upgraded with a Supercharge kit on a 376 cu in block is there a limit to it? Before having to upgrade to a bigger block. Ima rookie when compared to some of you guys who been in modding for years so I appreciate any help!

What is your budget first of all?
What are your goals? What do you want to accomplish?
Answer those things first then you can get pointed in a direction.

Mchlgrrsn · 04-05-2013, 06:54 PM

Quote:

Originally Posted by litle88

What is your budget first of all?
What are your goals? What do you want to accomplish?
Answer those things first then you can get pointed in a direction.

Agreed. You need a master plan. You can't just start slapping things on. It's a whole daisy chain. 1 part effects the next. Some good reading material.
http://www.hotrod.com/techarticles/g...e/viewall.html

Blowers and blocks are big money, a lot of time, and lots of bumps in the road. You need to plan carefully.

Bad70supreme · 04-05-2013, 08:11 PM

You seem very young and if you plan on racing that car... I would figure out how to actually handle 430hp first... and slowing upgrade as you learn your car! Sky is the limit when you have money, if you get full boltons, heads, cam, your gonna have more power then you know what to do with! Not to mention another handfull of issues like when will you break something with all that power!

This is not a hobby to jump into with both feet, take your time and learn! I have been at this for 16 years and I still dont know enough! I would start with your basic boltons and your gonna be suprized how much faster that camaro gets!

dekan513 · 04-05-2013, 08:13 PM

set a plan in motion. dont do like i did and just do what ever u got money for atm.Pick a plan and stick with it . u can find alot of diff build on here and find out what suits u.

POS Dakota · 04-05-2013, 08:28 PM

I would enjoy driving the car as is and build a new engine from scratch with whatever you can scrape up here and there over time. Then spend a weekend swapping it in.

I've found that in my case, doing it any other way screws up the planning process since the whole plan is based around keeping the car driveable the whole time. The original plan never materializes to my satisfaction like that.

Now I build a complete separate engine if I feel the need to do something substantial.
I can still drive the car and get it done.

My eventual goal with my car is a simple, large cube n/a combo that maintains a streetable powerband, but can still kick ass on the track. And it's very doable from what I've seen.

04-05-2013, 11:32 AM	#1
YoungWithACamaro2SS Drives: 6.2L V8 Camaro SS Automatic Join Date: Nov 2012 Location: San Jose California Posts: 24 View My Garage	How much HP can I get on a stock L99 Block b4 needing to change the block to a 427 I have a stock L99 Camaro 2012. To make it into a 427 do I have to swap out the block? Or can my stock block be upgraded to be a 427 with upgrades to the stock 376 block? Also how much Horsepower can be upgraded with a Supercharge kit on a 376 cu in block is there a limit to it? Before having to upgrade to a bigger block. Ima rookie when compared to some of you guys who been in modding for years so I appreciate any help!

04-05-2013, 12:27 PM	#3
Bomino Drives: 2011 2ss/rs Join Date: Feb 2013 Location: Nurburgring Posts: 104	Generally You can get to around 550rwhp+/- without touching the block or its internals with f/I and Bolt ons.. Past that you want forged internals for durability. Then the sky's the limit. But $$$ __________________

04-05-2013, 05:58 PM	#8
S3XPanther by Odeon Drives: '12 SS/RS A6 IOM SOLD, '13 1LE IOM Join Date: Nov 2011 Location: Good question Posts: 1,707	There's the block, then there's the rotating assembly..... __________________ "It works 60% of the time, every time." "Some say it's a waste of time, others say it's an incredible waste of time." "The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy." 2013 IOM SS/RS - 1LE. Born 5/6/2013 (1 of 32 1SS IOM 1LE's)

04-05-2013, 06:16 PM	#9
2SS45th Drives: 11 Seconds or Faster Join Date: May 2012 Location: Arvada, Colorado Posts: 2,797 View My Garage	The LS3 block is a decent setup, the internals are the major disadvantage. With a forged rotating assembly I'd take on to 700whp and feel confident. Past that, I get nervous with 4 bolt heads, major reason I have an LSX in my car. If you want 600 crank hp, not wheel, you can leave the internals alone. Supporting mods aren't even needed really, 500whp on a blower car is easy to hit without an intake or headers. __________________ I Ain't About That Stock Life.

04-05-2013, 08:11 PM	#12
Bad70supreme Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010 Location: plainfield, IL Posts: 2,706	You seem very young and if you plan on racing that car... I would figure out how to actually handle 430hp first... and slowing upgrade as you learn your car! Sky is the limit when you have money, if you get full boltons, heads, cam, your gonna have more power then you know what to do with! Not to mention another handfull of issues like when will you break something with all that power! This is not a hobby to jump into with both feet, take your time and learn! I have been at this for 16 years and I still dont know enough! I would start with your basic boltons and your gonna be suprized how much faster that camaro gets! __________________ 10.91 at 122 H/C stock block N/A

04-05-2013, 12:16 PM	#2
MikeSVX The magic smoke genie.... Drives: Jewels (2010 RJT 1SS) Join Date: Dec 2009 Location: Escondido, CA Posts: 2,294	How much money you got, and what are the other requirements(driveability, street legal, ect)? They've built 1.8L 4 cylinder engines to make 800 - 1000HP. The engines don't last too long, they aren't street legal, and are exspensive as hell. You can do just about anything with the right amount of money. As for as strocking the LS3 out to a 427, I don't know, but I would say it would be better to swap out the block too.

04-05-2013, 12:51 PM	#6
Aqua_Blue_SS Drives: 2010 ABM 2SS/RS M6 Join Date: Feb 2013 Location: Baytown, TX Posts: 341	I have a maggie with roto fab intake. Everything else is stock. Dyno'd at 560 the other day. Needs headers tho.

04-05-2013, 08:13 PM	#13
dekan513 chevy pride Drives: 2ss/rs Join Date: Feb 2012 Location: pikeville ky Posts: 2,141 View My Garage	set a plan in motion. dont do like i did and just do what ever u got money for atm.Pick a plan and stick with it . u can find alot of diff build on here and find out what suits u. __________________ check out ky speeds fb page https://www.facebook.com/kyspeed

04-05-2013, 08:28 PM	#14
POS Dakota Drives: GMs and Chryslers Join Date: Nov 2012 Location: Detroit Posts: 367 View My Garage	I would enjoy driving the car as is and build a new engine from scratch with whatever you can scrape up here and there over time. Then spend a weekend swapping it in. I've found that in my case, doing it any other way screws up the planning process since the whole plan is based around keeping the car driveable the whole time. The original plan never materializes to my satisfaction like that. Now I build a complete separate engine if I feel the need to do something substantial. I can still drive the car and get it done. My eventual goal with my car is a simple, large cube n/a combo that maintains a streetable powerband, but can still kick ass on the track. And it's very doable from what I've seen.