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

Brain fart...

Thread Tools
 
Search this Thread
 
Old Jun 12, 2006 | 10:50 AM
  #1  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default Brain fart...

TRying to finalize my current setup.

I was about to order the T-REX for my setup..which is AFR 205's/FAST 90 full bolt ons and spray....but I heard it was designed mostly for STOCK heads.

My other choice was the LG motorsports G5X3.......

Not worried about driveability, as long as it idles(tuner)....... anybody with experience with a similar setup? ANy numbers? Recomendations?

Thanks in advance.

Jamie
Reply
Old Jun 12, 2006 | 11:00 AM
  #2  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

It was designed to fit stock heads. That doesn't mean it will not perform better with heads.
Either way you'll have to flycut. G5X3 will be better suited for spray, more driveable too, but you'll never know the specs, because you'll never get a cam card. So when poeple ask you just say it is big
Reply
Old Jun 12, 2006 | 11:01 AM
  #3  
ShevrolayZ28's Avatar
TECH Addict
iTrader: (4)
 
Joined: May 2005
Posts: 2,318
Likes: 1
From: Massachusetts
Default

Compression ratio? Stock pistons?
Reply
Old Jun 12, 2006 | 12:12 PM
  #4  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default

Originally Posted by ShevrolayZ28
Compression ratio? Stock pistons?


As of right now, they'de be goingonto my stock block, with stock pistons. I do have a short block LS6 that I am most likley going to do rods and pistons in,...maybe a crank. I'd guess, after the pistons, i'd be around 11.4 or 11 and change. I'm not going to MILL the AFR's, since I can alter the compression with the piston swap.

So, right now, the setup will be for a stock bottom end.
Reply
Old Jun 12, 2006 | 12:22 PM
  #5  
98Z28MASS's Avatar
TECH Addict
iTrader: (6)
 
Joined: Jul 2004
Posts: 2,964
Likes: 1
From: Massachusetts
Default

Hey whats goin on man? Still working on the set-up huh? Yea with those 2 cams I believe you would have to flycut with the afr 205's. I believe though that the ms3 by tsp will fit without flycutting. There is one local guy around here running the prc ls6 heads on his frc c5 and he made over 450 rwhp with out of the box prc ls6 heads and the ms3 with a fast 90/90, kooks headers, cats, a b&b catback. If you were to squeeze a 100 or 150 shot ontop of that combo im sure youd see mid 500's on the 100 shot and close to 600 rwhp on the 150 shot. T-rex though and the g53x would work well with your stock heads though. With a 150 shot on a trex or g5x3 youd be seeing 400+ rwhp cam only and then over 500 rwhp with a 100 shot and mid 500's rwhp on the 150 shot.
Reply
Old Jun 12, 2006 | 01:07 PM
  #6  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default

Originally Posted by 98Z28MASS
Hey whats goin on man? Still working on the set-up huh? Yea with those 2 cams I believe you would have to flycut with the afr 205's. I believe though that the ms3 by tsp will fit without flycutting. There is one local guy around here running the prc ls6 heads on his frc c5 and he made over 450 rwhp with out of the box prc ls6 heads and the ms3 with a fast 90/90, kooks headers, cats, a b&b catback. If you were to squeeze a 100 or 150 shot ontop of that combo im sure youd see mid 500's on the 100 shot and close to 600 rwhp on the 150 shot. T-rex though and the g53x would work well with your stock heads though. With a 150 shot on a trex or g5x3 youd be seeing 400+ rwhp cam only and then over 500 rwhp with a 100 shot and mid 500's rwhp on the 150 shot.


What up G.

I...don't think you have to flycut the pistons, unless you mill the heads.

I put a Trex in a LS2 block(402 stroker) with Patriot heads...no fly cutting.
Reply
Old Jun 12, 2006 | 01:25 PM
  #7  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

Originally Posted by V-seriesTech
What up G.

I...don't think you have to flycut the pistons, unless you mill the heads.

I put a Trex in a LS2 block(402 stroker) with Patriot heads...no fly cutting.
G5X3 114 might squeeze by but I doubt it.
T-Rex, well go ahead and do it, I wanna see what happens on startup.
Reply
Old Jun 12, 2006 | 01:31 PM
  #8  
pdd's Avatar
pdd
TECH Veteran
iTrader: (3)
 
Joined: Aug 2003
Posts: 4,156
Likes: 0
From: dudley mass
Default

Originally Posted by PREDATOR-Z
T-Rex, well go ahead and do it, I wanna see what happens on startup.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Jun 12, 2006 | 01:40 PM
  #9  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

Originally Posted by pdd
Well, yeah, but he doesn't believe us.
( I'm using reverse pshychology BTW)

Last edited by PREDATOR-Z; Jun 12, 2006 at 01:46 PM.
Reply
Old Jun 12, 2006 | 02:01 PM
  #10  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default

I belive you guys... thats why I posted the question here.

They will clear, there is just NO room for error...IE over rev...etc etc.

So yes, the pistons would have to be cut.

Forget that....I'm gonna order pistons for the other block, and do a custom ground.

Thanks for your help.

J
Reply
Old Jun 12, 2006 | 02:37 PM
  #11  
98Z28MASS's Avatar
TECH Addict
iTrader: (6)
 
Joined: Jul 2004
Posts: 2,964
Likes: 1
From: Massachusetts
Default

Originally Posted by V-seriesTech
What up G.

I...don't think you have to flycut the pistons, unless you mill the heads.

I put a Trex in a LS2 block(402 stroker) with Patriot heads...no fly cutting.
yea it would be real tight, thats the only reason why id be careful with the afr 205's. What about the afr 225's? Would those fit better with a trex? That way if you went larger CI down the road youd have the heads to support a nice 402.
Reply
Old Jun 12, 2006 | 11:23 PM
  #12  
ShevrolayZ28's Avatar
TECH Addict
iTrader: (4)
 
Joined: May 2005
Posts: 2,318
Likes: 1
From: Massachusetts
Default

Originally Posted by 98Z28MASS
yea it would be real tight, thats the only reason why id be careful with the afr 205's. What about the afr 225's? Would those fit better with a trex? That way if you went larger CI down the road youd have the heads to support a nice 402.
I don't know, there might be even less clearance with the 225's bigger valves.
Reply
Old Jun 13, 2006 | 09:54 AM
  #13  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default

I dunno. The 402 LS2 we have here, running in a 2000 WS6 with patriot stage II heads, and T-rex, runs with no problems.

My friend, and memebr here on LS1 tech, has a TS head setup, with the G5X3 cam, with no cut pistons on his Z06. Car makes 463 rwhp. No flycutting done to either car.

???
Reply
Old Jun 13, 2006 | 10:06 AM
  #14  
~JOSHUA's Avatar
Banned
iTrader: (92)
 
Joined: Sep 2004
Posts: 7,757
Likes: 2
From: Atlanta
Default

I still wonder why people go through all the trouble when a slightly smaller lift cam will do just fine.

My Lunati 236/236/ .580 112 LSA just dyno'd 421rwhp cam only with supporting mods. If I had AFR's to go along it would be at 460 rwhp.

Why slam your own head against the wall with ultra large cams when they don't gain all that much power in comarison? It's not like NASCAR or Indy where every single hp matters. V-series, you're going to make it up with spray anyhow...
Reply
Old Jun 13, 2006 | 10:42 AM
  #15  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default

Originally Posted by FIREHAWK#608
I still wonder why people go through all the trouble when a slightly smaller lift cam will do just fine.

My Lunati 236/236/ .580 112 LSA just dyno'd 421rwhp cam only with supporting mods. If I had AFR's to go along it would be at 460 rwhp.

Why slam your own head against the wall with ultra large cams when they don't gain all that much power in comarison? It's not like NASCAR or Indy where every single hp matters. V-series, you're going to make it up with spray anyhow...


I know man. I like the ultra big cams thou bro. Been raised around big blocks
Reply
Old Jun 13, 2006 | 01:58 PM
  #16  
SVT THIS's Avatar
TECH Addict
20 Year Member
iTrader: (27)
 
Joined: May 2005
Posts: 2,237
Likes: 2
From: Owasso, Ok
Default

Go with a set of ETP 215s. You should have plenty of clearance with them and great flow as well. There's a guy on here (slickvert) with a full weight convertible, 4.56s, Trex and ETP 215s running high 10s NA. I'm not sure of his other mod's but it made me a believer!
Reply
Old Jun 13, 2006 | 04:38 PM
  #17  
santiago's Avatar
TECH Resident
iTrader: (28)
 
Joined: Sep 2004
Posts: 987
Likes: 0
From: norcal
Default

Originally Posted by SVT THIS
Go with a set of ETP 215s. You should have plenty of clearance with them and great flow as well. There's a guy on here (slickvert) with a full weight convertible, 4.56s, Trex and ETP 215s running high 10s NA. I'm not sure of his other mod's but it made me a believer!
it all depends on wether he wants to wait 800 years for a set of heads.

V series tech- I had the g5x3 before my t-rex cam and I'm glad I switched cause the t- rex keeps pulling after 6600rpms
Reply
Old Jun 14, 2006 | 06:28 AM
  #18  
V-seriesTech's Avatar
Thread Starter
TECH Senior Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 6,353
Likes: 6
From: East Coast
Default

Originally Posted by santiago
it all depends on wether he wants to wait 800 years for a set of heads.

V series tech- I had the g5x3 before my t-rex cam and I'm glad I switched cause the t- rex keeps pulling after 6600rpms


Thanks man. Very useful information.

I'm happy with the AFR's. Got them for nothing so, couldn't see spending money on another set.

Thanks Santiago.
Reply




All times are GMT -5. The time now is 11:31 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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