5.3L heads

Reply Subscribe

Thread Tools

Search this Thread

Oct 12, 2007 | 03:34 PM

TchargedLS1TA

Thread Starter

TECH Fanatic

iTrader: (9)

Joined: Jan 2003

Posts: 1,648

Likes: 1

From: Temple, TX

5.3L heads

Anyone know the max lift cam for 5.3L heads on a stock bottom end and stock GM MLS gasket?
Could you increase the lift based on valve timing events- I.E. have big lift before the piston reached TDC??

Oct 12, 2007 | 04:19 PM

98RedZone

TECH Regular

iTrader: (1)

Joined: Oct 2003

Posts: 424

Likes: 0

From: Bloomington, MN

Lift has nothing to do with PTV clearance. Unless you are talking about the limit of the valvespring, which case is stock cam lift at best.

Oct 12, 2007 | 04:21 PM

BIG_MIKE2005

12 Second Club

iTrader: (116)

Joined: Jun 2005

Posts: 5,221

Likes: 1

From: Skiatook, OK

I'm running a .581 lift cam with my 5.3 heads milled .018" & FelPro stock LS1 replacement gaskets. No issues.

Oct 12, 2007 | 04:24 PM

TchargedLS1TA

Thread Starter

TECH Fanatic

iTrader: (9)

Joined: Jan 2003

Posts: 1,648

Likes: 1

From: Temple, TX

I am talking about PTV clearances...
I guess let me re-phrase into a newbie type question-
What is the biggest cam you can run with this setup, duration/lift wise...?

Last edited by TchargedLS1TA; Oct 12, 2007 at 04:35 PM.

Reply Subscribe