C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Not sure which way to go....

Thread Tools
 
Search this Thread
 
Old Dec 22, 2010 | 12:51 AM
  #1  
Bkbulldog's Avatar
Bkbulldog
Thread Starter
Racer
 
Joined: Jan 2009
Posts: 490
Likes: 0
From: West texas TX
Default Not sure which way to go....

I have a 05 corvette with a 402 stroker...... I was thinking of taking out the current motor and getting a even bigger stroker. Questions I have is how much can I get for my current motor ,it is pushing out 415 RWHP and around 430 RWTQ with stock heads and intake manifold.
402- put together/in by LG Motorsports
G5X1 Cam
Katrut chain
921 spring
ls6 oil pump
lifters
Also what stroker should i look at that will make close to or more then 600 RWHP



Or just keep on building my current engine.
Reply
Old Dec 22, 2010 | 01:02 AM
  #2  
m R g S r's Avatar
m R g S r
Pro
 
Joined: Aug 2010
Posts: 748
Likes: 3
Default

your bottom end looks stout, why not try a ported FAST 102, 102mm ported throttle body and new heads. you should easily be in the 550hp range.
what is your compession? you can mill the new heads slightly as well
Reply
Old Dec 22, 2010 | 01:04 AM
  #3  
Bkbulldog's Avatar
Bkbulldog
Thread Starter
Racer
 
Joined: Jan 2009
Posts: 490
Likes: 0
From: West texas TX
Default

11:1 compression ratio
Reply
Old Dec 22, 2010 | 12:16 PM
  #4  
Bkbulldog's Avatar
Bkbulldog
Thread Starter
Racer
 
Joined: Jan 2009
Posts: 490
Likes: 0
From: West texas TX
Default

Originally Posted by m R g S r
your bottom end looks stout, why not try a ported FAST 102, 102mm ported throttle body and new heads. you should easily be in the 550hp range.
what is your compession? you can mill the new heads slightly as well
Think my engine can hit that with just a fast and heads?
Reply
Old Dec 23, 2010 | 01:36 PM
  #5  
Anthony @ LGMotorsports's Avatar
0Anthony @ LGMotorsports
Former Vendor
 
Joined: Aug 2005
Posts: 16,897
Likes: 412
From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Default

The bottom end is very stout...Callies Crankshaft, connecting rods and Mahle pistons.

Biggest limiting factor when it went together was keeping the OEM torque converter and over all budget.

Heads and intake manifold would make HUGE changes not even factoring in a camshaft as you have increased displacment but not much to help air coming in. The FAST intake alone would be a good investment as it already does wonders on a stock LS2.

Of course changing torque converters would allow larger camshafts...thus more power as well.
Reply
Old Dec 23, 2010 | 03:05 PM
  #6  
Bkbulldog's Avatar
Bkbulldog
Thread Starter
Racer
 
Joined: Jan 2009
Posts: 490
Likes: 0
From: West texas TX
Default

LG did put together a very nice engine. I have had ZERO issues ever since I lefted their shop. They are the only shop I will ever take my car too. Im just kind of torn building up my motor or getting a 454. LG I will be getting back to you after the Christmas holidays on what I decide and look forward to taking yet another trip to Dallas for more A+ work.
Reply
Old Dec 23, 2010 | 04:02 PM
  #7  
dads toy's Avatar
dads toy
Burning Brakes
 
Joined: Apr 2009
Posts: 1,155
Likes: 0
From: Kansas City MO
Default

415 rwhp is nothing to sneeze at, why are you wanting more power? what do you do with your car? do you race it and want to go faster? if so, replace stock converter. Is it for dyno numbers only? Just curious as to why?
Reply
Old Dec 23, 2010 | 06:31 PM
  #8  
cantrelmitl's Avatar
cantrelmitl
Racer
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2006
Posts: 399
Likes: 1
From: Jasper, GA
St. Jude Donor '10
Default

Man,
I would change out the coverter, add TFS heads, and a 102 intake. I have a 404 with LS3 heads, LS3 intake, headers, and 231/239 cam. No drivability issues whatsoever. I dyno at 503/481 at the wheels. IMO, I think you could get up to 480+ and still have great drivability. LG is nothing but the best and have always been respected. I've heard nothing but great things. Also, watched the Speed channel when Lou allowed one of his cars to be driven in a sports car shootout with novice drivers. He definitely showed lots of patience. With just doing that you would definitely save $$$ and wouldn't have to pay for the complete remove and replace of the engine. Or go with a S/C and go up even further. I like the NA way. Lastly, you may want to see how you like your car with the extra 60+ HP and extra torque. Yep, and the 315 PS2s don't last too long either. Good luck and happy holidays.
Mike C
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
Old Dec 24, 2010 | 10:34 AM
  #9  
Tony B4's Avatar
Tony B4
Safety Car
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2006
Posts: 3,922
Likes: 4
From: Cheektowaga NY
St. Jude Donor '08
Default

Originally Posted by Bkbulldog
I have a 05 corvette with a 402 stroker...... I was thinking of taking out the current motor and getting a even bigger stroker. Questions I have is how much can I get for my current motor ,it is pushing out 415 RWHP and around 430 RWTQ with stock heads and intake manifold.
402- put together/in by LG Motorsports
G5X1 Cam
Katrut chain
921 spring
ls6 oil pump
lifters
Also what stroker should i look at that will make close to or more then 600 RWHP



Or just keep on building my current engine.

Trick flow 225-235 heads
Fast 102 intake
Mezeire electric waterpump
New more aggressive cam
New tune
3200 stall conveter for better cam

That should get you 550+rwhp....

If I were in your shoes, I would build that 402 to its fullest potential. You're in good hands with LG...Ask LG what you think you should do.
Reply

Get notified of new replies

To Not sure which way to go....





All times are GMT -4. The time now is 05:15 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE