My ls2 heads

Reply Subscribe

Thread Tools

Search this Thread

Feb 14, 2010 | 03:32 PM

edge04

Thread Starter

TECH Enthusiast

iTrader: (9)

Joined: Mar 2009

Posts: 626

Likes: 1

My ls2 heads

In hindsight looks like buying new heads might be the better choice but I did some port work on my current 243 cathedral heads 2.05in 1.55ex I will switch to 1.60 if I keep these, 64cc 28"

Intake
100 63.6
200 132.5
300 197.6
350 223.4
400 246.1
450 264.6
500 279.9
550 289.1
600 289.1
650 288.6
700 276.4

Ext
100 52.3
200 109.9
300 148.1
350 163.5
400 175.3
450 184.5
500 192.8
550 198.6
600 205.8
650 210.4
700 216.9

Not sure these flowed like stock, anyone know?

The motor has a maggy sc on it so do you guys think I would be better off with a set of l92 or something else?

Last edited by edge04; Feb 14, 2010 at 10:13 PM.

Feb 15, 2010 | 09:04 AM

edge04

Thread Starter

TECH Enthusiast

iTrader: (9)

Joined: Mar 2009

Posts: 626

Likes: 1

let me ask, would I really gain anything by putting in 1.6 ext valves? I need new ones anyway.

Feb 15, 2010 | 09:23 AM

outkast6991

TECH Fanatic

iTrader: (34)

Joined: Jun 2004

Posts: 1,625

Likes: 0

From: lancaster,pa

you did the porting yourself? post some pics and what was done to them

Feb 15, 2010 | 11:21 AM

edge04

Thread Starter

TECH Enthusiast

iTrader: (9)

Joined: Mar 2009

Posts: 626

Likes: 1

how do I post pics? whats the easiet way

Feb 15, 2010 | 11:25 AM

edge04

Thread Starter

TECH Enthusiast

iTrader: (9)

Joined: Mar 2009

Posts: 626

Likes: 1

Feb 15, 2010 | 07:28 PM

JonCR96Z

TECH Junkie

iTrader: (33)

Joined: Jan 2003

Posts: 3,006

Likes: 19

From: Asheboro, NC

Quote:

Originally Posted by edge04

let me ask, would I really gain anything by putting in 1.6 ext valves? I need new ones anyway.

I dont think the stock seats will work for anything bigger than 1.57.

Here's some stock 243s that I just had flowed.

Feb 15, 2010 | 08:48 PM

edge04

Thread Starter

TECH Enthusiast

iTrader: (9)

Joined: Mar 2009

Posts: 626

Likes: 1

[QUOTE=JonCR96Z;12899067]I dont think the stock seats will work for anything bigger than 1.57.

But I can have them cut and just blend them in right?

Here's some stock 243s that I just had flowed.

thanks, I guess I did get some gains. but I am still considering new ones. Need to get some cam ideas has well.

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

Brett Foote

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

Pouria Savadkouei

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

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

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

Verdad Gallardo

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

Feb 15, 2010 | 10:05 PM

novaflash2002

TECH Enthusiast

iTrader: (51)

Joined: Jul 2008

Posts: 616

Likes: 0

From: Billings, Mt

you can get 1.60 in them. it is almost to the edge of the seat but it is do able. u might pick up a few more cfm if you open it up just a tad more at the top of the cathederal, where the injector sits.

Feb 17, 2010 | 11:36 AM

#10

edge04

Thread Starter

TECH Enthusiast

iTrader: (9)

Joined: Mar 2009

Posts: 626

Likes: 1

well I have my whole motor apart (spun a crank bearing) so I am looking at a new cam. As stated earlier, I have to buy new exh valves, springs and retainers for my current 243 heads so while I am at this stage, should I just bolt on a set of L92 heads, I can pick up sets cheap.