LT4 Cam Questions

Reply Subscribe

Thread Tools

Search this Thread

Mar 21, 2007 | 12:44 PM

Mekanic

Thread Starter

Melting Slicks

Joined: Oct 2006

Posts: 2,314

Likes: 3

From: In a van down by the river! Florida

LT4 Cam Questions

I want to put a cam in my LT4, but, to be honest, I don't know much about them, engines I've built have always used the cam they came with.

My main question is, what supporting mods will have to be done when going with a more aggressive cam? How much more aggressive? I have no idea.

Mar 21, 2007 | 12:56 PM

BADDUCK

Le Mans Master

Joined: Jun 2006

Posts: 5,642

Likes: 5

From: One day you're a Comet...the next day you're dust... Arkansas

There is a LT4 hotcam kit. Do some searches, lots of info.

Mar 21, 2007 | 01:10 PM

JEFNLSA

Melting Slicks

Joined: Jan 2005

Posts: 2,604

Likes: 0

From: Phoenix, Arizona

A hotcam & longtube headers will wake up your LT4...I know it did mine.
4.10 gears are a great mod as well.

Mar 21, 2007 | 01:35 PM

vader86

Team Owner

Joined: Sep 2001

Posts: 62,160

Likes: 1,733

From: Athens AL

C7 of the Year - Unmodified Finalist 2021

C4 of Year Finalist (performance mods) 2019

Hotcam and headers would really be all you need, you can even get by with the stock computer program on an LT4, though a custom one would do some good.

Mar 21, 2007 | 04:17 PM

RacerX70CC

Melting Slicks

Joined: Nov 2004

Posts: 2,799

Likes: 2

From: Cape Coral FL

Follow the herd and use a Hotcam...

Mar 21, 2007 | 07:51 PM

Ed's lt4

Advanced

Joined: Feb 2004

Posts: 87

Likes: 0

From: albrightsville pa

I agree, 329 rwhp with lt1 edit through stock manifolds

Mar 21, 2007 | 11:30 PM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,263

Likes: 86

From: O'Fallon Missouri

FYI: Some stock tune LT4 Hot camed LT4's will experience a misfire code. A local guy has one sitting in his garage that won't pass emissions because of the code.

Mar 22, 2007 | 10:59 AM

JEFNLSA

Melting Slicks

Joined: Jan 2005

Posts: 2,604

Likes: 0

From: Phoenix, Arizona

Quote:

Originally Posted by STL94LT1

FYI: Some stock tune LT4 Hot camed LT4's will experience a misfire code. A local guy has one sitting in his garage that won't pass emissions because of the code.

Yup, it's a PO300 (Random Multiple Cylinder Misfire)

Had it w/ my car but eventually just erased the code w/ Tunercat. Car ran great but even aftera couple of re-tunes the code was still there. F'rs gone now.