...

Go Back   Lateral-g Forums > Technical Discussions > Engine
User Name
Password



Reply
 
Thread Tools Display Modes
  #1  
Old 01-19-2010, 07:54 PM
tgvettes tgvettes is offline
Senior Member
 
Join Date: Jan 2008
Location: Scottsdale Arizona
Posts: 305
Thanks: 0
Thanked 0 Times in 0 Posts
Default 07 and newer 5.3L what crank and cams?

What cranks and cams can I use in the latest style 5.3L Iron blocks? Are they compatible with older style LS engines or have they gone thru similar changes like the LS3?

I was wondering because I want to use the 2nd design LS6 cam (used from 2002-2004)

Tonny
__________________
Tonny
1980 Volvo 262 C Pro Touring Project
Reply With Quote
  #2  
Old 01-20-2010, 12:05 AM
deuce_454's Avatar
deuce_454 deuce_454 is offline
Senior Member
 
Join Date: May 2006
Location: Copenhagen, Denmark
Posts: 1,612
Thanks: 0
Thanked 1 Time in 1 Post
Default

www.ls1tech.com log in and use the search function... you can also get some help in the cam selectin there... (again search before asking or they will flame you) but specific questions do get some good answers

just wondering why you wanted to use the ls6 cam? if its only price i get it.. but if you can afford an aftermarket cam, you are not doing yourself a favour selecting somthing GM engineered for a larger displacement engine with mileage and emissions in mind...

just be sure to post specifics, like budget, use of engine, horsepower -torque and torquerange goals, what intake, heads, headers, supporting mods.. are you willing to do forced induction etc etc...
for an el-cheapo build send out your 5.3 heads for cnc porting, get a custom cam ground and leave the bottom end.. you should have no issues hitting 450-500 crank horsepower with a mild cam... give mike norris a call (number to your left in vendors) or if you are a cheapskate try TSP or Patriot.. just remember you get what you pay for....
__________________
Elwood:We're 105 miles from Chicago, we have a full tank of gas, half pack of cigarettes, it's dark out and we're wearing sunglasses.
Jake: Hit it.

Last edited by deuce_454; 01-20-2010 at 12:19 AM. Reason: adding vendor name
Reply With Quote
  #3  
Old 01-20-2010, 12:52 AM
70rs's Avatar
70rs 70rs is offline
Senior Member
 
Join Date: Feb 2009
Location: Western Washington State
Posts: 3,683
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Chevy High Performance did a build on one not too long ago and with a set of aftermarket heads and a carb got really close to 500hp. Check the web site for details, sorry I don't recall which issue it was. Cam specs, pistons, heads ......great build on a budget.
__________________
Eric

1970 Camaro.....on the road someday!
Reply With Quote
  #4  
Old 01-20-2010, 09:18 AM
tgvettes tgvettes is offline
Senior Member
 
Join Date: Jan 2008
Location: Scottsdale Arizona
Posts: 305
Thanks: 0
Thanked 0 Times in 0 Posts
Default

My goal is to build a 375-400 horse engine and use as much GM parts as possible. I would think the LS6 2nd Gen Cam would be perfect for what I'm looking for so I don't see any reason to go aftermarket on the cam.
it is going into my 63 Nova Conv so a fairly light car. going to put a 4L60E or 4L65E behind. 3.73 in the rearend
__________________
Tonny
1980 Volvo 262 C Pro Touring Project
Reply With Quote
  #5  
Old 01-20-2010, 09:35 AM
deuce_454's Avatar
deuce_454 deuce_454 is offline
Senior Member
 
Join Date: May 2006
Location: Copenhagen, Denmark
Posts: 1,612
Thanks: 0
Thanked 1 Time in 1 Post
Default

well the ls6 cam isnt perfect. infact its barely enough for 400 hp in a larger displacement engine...

but your plan is sound though.. the rear end gearing is the first thing in getting an ls engined car moving, second is converter, then cam and heads... a "cam only" 5.3 will easily do 450 hp and a 224 deg cam.. (and there are plenty "small" cams on ebay as people upgrade)

the mild ramps of the ls6 cam along with the mild lift, wide LS and the oem duration figures makes it a great emissions cam for a showroom car.. but with a relatively steep rear end gearing, and a light car, its far from ideal...

Honestly i wouldnt spend the money to go from a stock to ls6 cam...if you do you will for sure need springs so you would be looking at minimum $600 in parts for about 15whp.....204/219 .551/.548 117.5....is the specs on the ls6...if you went to like a 220/220 555.555 114...you would still have a very mild cam but would notice close to 50% more of an increase over the ls6 cam....it will sound a lot like stock, and drivability shouldnt really be an issue....just call a cam company and tell them your goals and they will set you up.....

my 3 cents...

ps.. im not knocking you.. its just that ive found it to be cheaper to do things right first time out
__________________
Elwood:We're 105 miles from Chicago, we have a full tank of gas, half pack of cigarettes, it's dark out and we're wearing sunglasses.
Jake: Hit it.
Reply With Quote
  #6  
Old 01-20-2010, 10:37 AM
Mkelcy's Avatar
Mkelcy Mkelcy is offline
Supporting Member
 
Join Date: May 2005
Location: Walla Walla, WA
Posts: 566
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by tgvettes View Post
What cranks and cams can I use in the latest style 5.3L Iron blocks? Are they compatible with older style LS engines or have they gone thru similar changes like the LS3?

I was wondering because I want to use the 2nd design LS6 cam (used from 2002-2004)

Tonny
According to the GMPP catalog, any of the 3.62 stroke cranks will bolt into any of the LSx blocks. That said, there's no reason to change the bottom end for the power level you're looking at. The LS6 cam might get you to 375hp, but the 5.3 heads don't flow nearly as well as the LS6 heads and you're giving up a little displacement as compared to the 405hp LS6.

If you have the 5.3 heads worked you can easily get there, or you might try something like the GM Hot Cam, less lift but more duration than the LS6 cam you're looking at, and you're not going gain much with the 0.550 lift of the LS6 cam (as compared to the 0.525" lift of the Hot Cam) because the 5.3 heads only gain 3 cfm going from 0.500" to 0.550".
__________________
Mike - '68 Camaro with some stuff done to it

Last edited by Mkelcy; 01-20-2010 at 10:41 AM.
Reply With Quote
  #7  
Old 01-20-2010, 02:48 PM
tgvettes tgvettes is offline
Senior Member
 
Join Date: Jan 2008
Location: Scottsdale Arizona
Posts: 305
Thanks: 0
Thanked 0 Times in 0 Posts
Default

the crank issue I have is if the newer block 5.3L use a different crank. I believe the old one has a 24 tooth reluctor gear. I think the LS2 and LS3 has more tooth on the reluctor gear then the older LS motors and I don't have a crank that is why I'm asking. I know there is absolutely no need for anything but a stock crank for what I'm looking in output.

Of course the heads are going to be ported. headers and most likely also a LS6 intake.


Tonny
__________________
Tonny
1980 Volvo 262 C Pro Touring Project

Last edited by tgvettes; 01-20-2010 at 02:53 PM.
Reply With Quote
  #8  
Old 01-20-2010, 02:51 PM
Mkelcy's Avatar
Mkelcy Mkelcy is offline
Supporting Member
 
Join Date: May 2005
Location: Walla Walla, WA
Posts: 566
Thanks: 0
Thanked 0 Times in 0 Posts
Default

All of the 3.62" stroke cranks will work in all of the LSx blocks. You need to match the number of teeth on the reluctor (24 or 58) to your computer, if you're using one. The reluctors can also be changed.
__________________
Mike - '68 Camaro with some stuff done to it
Reply With Quote
  #9  
Old 01-20-2010, 02:59 PM
tgvettes tgvettes is offline
Senior Member
 
Join Date: Jan 2008
Location: Scottsdale Arizona
Posts: 305
Thanks: 0
Thanked 0 Times in 0 Posts
Default

as I'm starting from Scratch (don't have any computer etc.) is there any benefit to have one or the other? 24 or 58 gear reluctor?
__________________
Tonny
1980 Volvo 262 C Pro Touring Project
Reply With Quote
  #10  
Old 01-20-2010, 03:09 PM
Mkelcy's Avatar
Mkelcy Mkelcy is offline
Supporting Member
 
Join Date: May 2005
Location: Walla Walla, WA
Posts: 566
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by tgvettes View Post
as I'm starting from Scratch (don't have any computer etc.) is there any benefit to have one or the other? 24 or 58 gear reluctor?
I don't know. Now I'll refer you to LS1tech.com.
__________________
Mike - '68 Camaro with some stuff done to it
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:27 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net