Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Cylinder head 853's

Thread Tools
 
Search this Thread
 
Old Aug 12, 2012 | 07:12 PM
  #1  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default Cylinder head 853's

I recently bought a 2000 camaro. Its a head and cam car. I was told it had ls6 heads on the car. He had a receipt for the heads so I assumed he wasn't lying. Retarded *** move.

Took all the numbers down off the heads and heres as follows,

Casting number: 853
Drivers side stamped number: 9826916068229855
Passenger side stamped number: 8269r3362856

Can you guys help me out figure this **** out? any idea what I have on my car?

Thanks
Reply
Old Aug 12, 2012 | 07:20 PM
  #2  
hotrodth's Avatar
On The Tree
 
Joined: Mar 2011
Posts: 161
Likes: 0
From: jax, fl
Default

they are stock heads...sry to break the bad news
Reply
Old Aug 12, 2012 | 08:07 PM
  #3  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

damn it.
i appreciate the help, i just didnt see that coming because i have another set of stock heads that came with the car.

any suggestions on cheap heads that will help me make more power?
Reply
Old Aug 12, 2012 | 08:25 PM
  #4  
hotrodth's Avatar
On The Tree
 
Joined: Mar 2011
Posts: 161
Likes: 0
From: jax, fl
Default

what do you consider cheap? Texas speed had a great set of heads for 1300.00 prc state 2.5 5.3 heads. they are cnc ported and also raise compression. great heads...
Reply
Old Aug 12, 2012 | 08:31 PM
  #5  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

thats not too bad. is that what you run?

and i see you have gears in your car, with my big profile cam i wanted to do some gears so its not so bad in the low rpm, did the 3.73's make a difference?
Reply
Old Aug 12, 2012 | 09:41 PM
  #6  
OutrunNAScaR14's Avatar
Staging Lane
iTrader: (4)
 
Joined: Mar 2012
Posts: 92
Likes: 0
From: Gainesville,GA
Default

3.73 in my car was one of the biggest differences I've felt. Cheap horsepower in gears.
Reply
Old Aug 12, 2012 | 10:03 PM
  #7  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

yeah i really wanna get like 4.10s or 3.90's....did you have an m6 or a4?

i didnt think that 3.73's would be a noticable upgrade for an m6 cause it already has 3.42's
Reply
Old Aug 12, 2012 | 10:06 PM
  #8  
badazz81z28's Avatar
TECH Addict
15 Year Member
iTrader: (6)
 
Joined: Sep 2005
Posts: 2,391
Likes: 3
Default

They may be stock castings...but they could have still have work done to them. Butt dyno should be able to tell you that.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-2

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-3

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 
Old Aug 12, 2012 | 11:24 PM
  #9  
chevybayboy's Avatar
TECH Fanatic
10 Year Member
Photogenic
Photoriffic
Liked
iTrader: (6)
 
Joined: Jul 2012
Posts: 1,308
Likes: 10
Default

Get some 243 heads and get some head worj
Reply
Old Aug 13, 2012 | 10:44 AM
  #10  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

Ok. What's the difference between 243 heads and the Texas speed prc 2.5's?
Reply
Old Aug 13, 2012 | 11:16 AM
  #11  
baxsom's Avatar
TECH Apprentice
iTrader: (6)
 
Joined: Apr 2011
Posts: 301
Likes: 4
From: Rockledge FL
Default

243 heads are the stock heads that LS6 and LS2 cars came with (also badged 799)
some 243 heads had lighter weight valves.

the stage 2.5 heads from TSP are from a 5.3L engine. I have a set on my 00C5. For 1200 bucks, I got a compression bump, CNC heads, dual springs and when combined with my 228R cam dynoed at 240 to the wheels.
Reply
Old Aug 13, 2012 | 02:59 PM
  #12  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

240 rwhp? do you mean 440?
Reply
Old Aug 13, 2012 | 03:41 PM
  #13  
NC98Z's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Sep 2003
Posts: 1,306
Likes: 0
Default

Originally Posted by mrada6998
Ok. What's the difference between 243 heads and the Texas speed prc 2.5's?
243s are the stock LS6 heads. Texas Speed has 5.3 heads and LS6 heads with the 2.5 upgrades.
Reply
Old Aug 13, 2012 | 04:15 PM
  #14  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

yeah i was looking at their site, texas speed, and the flow number at a .600 lift are pretty much the same on both the prc and ls6 heads and the chambers are almost the same cc's. does anyone have a recommendation on one vs the other?
Reply
Old Aug 13, 2012 | 04:32 PM
  #15  
badazz81z28's Avatar
TECH Addict
15 Year Member
iTrader: (6)
 
Joined: Sep 2005
Posts: 2,391
Likes: 3
Default

PRC LS6 heads have different runners than the 5.3 heads. They will make more power over the 5.3 heads all day long.
Reply
Old Aug 14, 2012 | 10:23 AM
  #16  
mrada6998's Avatar
Thread Starter
Staging Lane
 
Joined: Mar 2012
Posts: 51
Likes: 0
From: Wilmington DE
Default

alright. thanks alot for all the info.

with a non ported ls6 intake, shoudl i consider upgrading that when i do the heads or will that flow well enough?
Reply




All times are GMT -5. The time now is 04:22 AM.

story-0
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-1
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-2
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-3
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-4
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-5
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-6
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-7
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-8
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-9
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE