Vortec heads with Lunati cam [Archive] - Team Camaro Tech

: Vortec heads with Lunati cam


mjlynch71
Dec 22nd, 10, 11:08 PM
I got a set of .062 Vortec heads for my 350. I looked and looks like the Lunati cam part number 00017lk is a good option, it is a flat tappet, with hydro lifters. Any option here as I am limited to a .480 lift. Thanks, Jerod

SuperSport01
Dec 22nd, 10, 11:41 PM
Technically you are not limited to .480" lift. A trip to the machine shop to have your valve guides cut down and your spring pockets cut for larger springs can equal up to allowing more lift. From what ive seen though Vortec heads dont really flow well after .520" lift. But to answer your question.. yes that Lunati cam will work great, good power band to go with those heads. Also a set of Comp Cams pro magnum rocker arms with a 1.52 ratio will bump up that cams valve lift to .466"

TJS69
Dec 23rd, 10, 10:02 AM
.480 lift is enough for a street 350. A Comp Cams 262 duration or a Crane 262/268 should work nice for a mild street 350. We really need more info on the engine. You don't want larger or car will want a stall converter, lower gears etc. I also like the old L79 cam for a mild 350.

L79corvette
Dec 23rd, 10, 03:50 PM
Put a set of yellow LS1 Z06 beehive springs with new locks and retainers. The heads will be good to .550 lift. Total cost abot $100 bucks. Here is the article I used but I didn't use the comp beehive springs. I used the GM Z06 beehive springs from summit $60. NO MACHINE WORK NEEDED.

http://www.carcraft.com/techarticles/vortec_valve_spring_upgrade/index.html

novaderrik
Dec 24th, 10, 08:29 AM
Put a set of yellow LS1 Z06 beehive springs with new locks and retainers. The heads will be good to .550 lift. Total cost abot $100 bucks. Here is the article I used but I didn't use the comp beehive springs. I used the GM Z06 beehive springs from summit $60. NO MACHINE WORK NEEDED.

http://www.carcraft.com/techarticles/vortec_valve_spring_upgrade/index.html

what are the part numbers for the springs, locks, and retainers you used? was it all factory LS6 parts?
what was your installed height and pressure?

L79corvette
Dec 24th, 10, 01:01 PM
what are the part numbers for the springs, locks, and retainers you used? was it all factory LS6 parts?
what was your installed height and pressure?


VALVE SPRINGS - GM-12499224 - $63
<LI class=pdetail>Valve Springs, Beehive, 90 lbs. @ 1.8 in., 295 lbs @ 1.250 in., .570 in. Maximum Lift, LS6/LS2, Set of 16

-Retainer, steel
Comp Cams 774 $59

-Keepers, 7-degree
Comp Cams 648-16 $28

novaderrik
Dec 25th, 10, 06:49 AM
VALVE SPRINGS - GM-12499224 - $63
<LI class=pdetail>Valve Springs, Beehive, 90 lbs. @ 1.8 in., 295 lbs @ 1.250 in., .570 in. Maximum Lift, LS6/LS2, Set of 16

-Retainer, steel
Comp Cams 774 $59

-Keepers, 7-degree
Comp Cams 648-16 $28

that's closer to $150 than it is to $100, but still a pretty damn good deal...

L79corvette
Dec 25th, 10, 10:47 PM
that's closer to $150 than it is to $100, but still a pretty damn good deal...


Well for me, it was closer to $100. I bought used Z06 springs off fleabay for $30. Better than machine work cost in my book, plus those heads flow better than any stock GM iron head ever made.

98blackburb
Dec 26th, 10, 07:52 AM
gmpartsdirect.com

Page 1: 1-1 of 1 items



--------------------------------------------------------------------------------
GM PART # 12499224
CATEGORY: Engine Valve Spring
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $62.40
OUR PRICE: $50.92


DESCRIPTION: Valve Spring Kit (2001-2004 LS6 engines)
Kit includes 16 LS6 springs.

novaderrik
Dec 26th, 10, 09:15 AM
Well for me, it was closer to $100. I bought used Z06 springs off fleabay for $30. Better than machine work cost in my book, plus those heads flow better than any stock GM iron head ever made.

how did your particular set of springs measure up? what was your installed height and open and closed pressures?

L79corvette
Dec 26th, 10, 10:03 AM
how did your particular set of springs measure up? what was your installed height and open and closed pressures?


I been running these springs for about a year now. Also, I running these springs on some Fast Burn heads on my ZZ383 with the GM847 cam. Both engines run great. I don't remember the install height with opening and closing. Do your research on the internet? I saw an article a couple months ago that a guy had all the info plus much more. He played with different retainers and was getting .550 lift with stock vortec heads.

novaderrik
Dec 26th, 10, 12:40 PM
i was asking about your particular springs on your particular heads.. buying used springs is always a crap shoot since they do soften up over time and they were replaced for some reason..

98blackburb
Dec 26th, 10, 02:39 PM
I am subscribed as I am running Vortec Heads, alot of bang for buck.