Help with LG cams

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Mar 14, 2006 | 08:19 AM

sdnet

Thread Starter

Le Mans Master

Joined: Aug 2004

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From: Sahuarita AZ

Help with LG cams

Can someone please take a look at this page and translate it into something understandable?

http://www.lgmotorsports.com/catalog...oducts_id=1509

What do those numbers mean? What's the difference between LSA 112 and LSA 114? Does anyone have LG's G5X2 or G5X3 cams?

Mar 14, 2006 | 08:49 AM

Roostertail

Melting Slicks

Joined: Oct 2004

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St. Jude Donor '06

That's a pretty complicated question. Try www.ls1tech.com Look in the LS1 Internal Engine section. There is a sticky at the top with a very good discussion regarding cams.

Good Luck

Mar 14, 2006 | 08:49 AM

0John@SDPC

Former Vendor

Joined: Mar 2006

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The duration figures indicate 'how long' the valves are open (Intake and Exhaust) in crankshaft degrees. Typically these numbers are reported/measured when the valve is opened more than .050". The lift figures indicate 'how far' the valves will actually open (i.e. the up and down travel of the valve). These numbers are typically reported with an assumed rocker ratio. For example, the stock rocker ratio is 1.7:1. So, for every inch of camshaft lift, the valve will actually move 1.7 inches. LSA stands for lobe separation angle and indicates the distance between the intake and exhaust lobes on the camshaft itself.

Do a search, and you will find plenty about how all of these attributes work together. Here are some links:

Basic Definitions
Good Chevy Hi-Performance Article
Overview by Comp Cams

Mar 14, 2006 | 10:18 AM

sdnet

Thread Starter

Le Mans Master

Joined: Aug 2004

Posts: 9,770

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From: Sahuarita AZ

Thanks for the resources, guys. I will definitely take a look at those and read up as much as I can.

Mar 14, 2006 | 10:40 AM

valdeztke

Le Mans Master

Joined: Nov 2005

Posts: 6,344

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From: Alexandria VA

Im with ya ...I just want to talk to people that have a cam in their car....two things.

Idle, does it idle and if lope ow extreme (notice I dont say how bad, lope isnt a bad thing) ?
Power, when does it come on?

Mar 14, 2006 | 06:15 PM

XPC5R

Drifting

Joined: Apr 2002

Posts: 1,614

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From: DFW TX

The G5X3 on a 112 lsa will have a rougher idle, but will come in hard a few hundred rpm earlier - tougher to tune on an A4 car. The 114 lsa has a smoother idle (still an aggressive lope) and pull a little longer at the top of the rev range (6000-7000rpm).

Both cams are very strong runners, with or without ported heads.

Mar 14, 2006 | 07:02 PM

Ikester

Race Director

Joined: Mar 2001

Posts: 11,405

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From: Whippany NJ

CI 6-7-8-9 Veteran

St. Jude Donor '08-'09

NCM Sinkhole Donor

Call LG and ask for Lou. hes great with customers

Mar 14, 2006 | 08:55 PM

Toque

Tech Contributor

Joined: Jan 2004

Posts: 20,030

Likes: 289

From: Wylie TX --> Less is More, except under the hood !

I have LG's G5X1-E cam (114lsa) and love it. Close to stock drivability too ! With heads/cam/headers I got 447rwhp/427rwtq.... Well over 500 at the crank ! I can break the stock Z06 tires loose at any time under ~50 mph !

Check my web site for details and VIDEO:
http://mysite.verizon.net/res0aae8/webpage.html

Toque