New Guy- Want Cam/ Heads input
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Teching In
Joined: Feb 2011
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From: Murrieta/ Temecula, CA
New Guy- Want Cam/ Heads input I have a stock 2000 5.3L. Today I picked up some (241) LS1 Heads w/ New PRC Double Springs, a New Vengeance Racing VRX4 Cam (228/230, .588/.592 112 LSA) and New Comp Cams Magnum pushrods for a good deal. How do you guys think this combination will work out? Im gonna get the comp dyno tuned at Cunningham motorsports in Temecula. The motor is going in a desert race truck w/ manual valve body TH400 and 9" w/ 4.56 and 35" tires. Also now have 5.3L 706 heads and cam w/ low miles for sale if anybody is interested, sounds like the heads are a good compression upgrade.
Last edited by LS Desert Ranger; Feb 12, 2011 at 12:15 PM.
Thread Starter
Teching In
Joined: Feb 2011
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From: Murrieta/ Temecula, CA
i was told to get them milled at least 40 thou. to bring my CR up and still be able to run on pump gas. I was also told that cam would probably be maximum for the 5.3L. Im looking for mostly low to midrange power since this is a desert truck and wont be absolutely pinned for long periods of time. Do you guys agree with the things i was told? Any other suggestions?
i actually agree. that cam is plenty for that 5.3. snd the heads shouldnt be terrible. I would have them milled and any port work you can afford will be helpful and give you some more power.
Thread Starter
Teching In
Joined: Feb 2011
Posts: 35
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From: Murrieta/ Temecula, CA
is my cam considered big or small? will it still give me decent low end torque? and what stall torque converter should be used with it? I also heard that any shop worth a **** nowadays does CNC porting and that **** is big bucks.
https://www.vengeancerd.com/ecart/pr...7D.592-112-LSA
https://www.vengeancerd.com/ecart/pr...7D.592-112-LSA
Last edited by LS Desert Ranger; Feb 7, 2011 at 09:32 PM.
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In an LS1 it would be a good mid range cam probably make around 380-390 rwhp with supporting mods. I have the 224/230 114lsa in my 98 Z and it was dead even with my buddies 233/239 114lsa that dynoed 403rwhp. in a 5.3 however it will act like a slightly bigger cam. Id expect to make around 360rw(if it was in an fbody the 9 inch will eat up some and so will the tranny) or so with the 112 lsa. but I dont think you have a bad setup, the cam should make decent torque as well and the 4.56 gears are a plus
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Thread Starter
Teching In
Joined: Feb 2011
Posts: 35
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From: Murrieta/ Temecula, CA
Thread Starter
Teching In
Joined: Feb 2011
Posts: 35
Likes: 0
From: Murrieta/ Temecula, CA
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
I wouldn't go crazy milling them. 30 should be good. They have bigger valves then the 5.3 heads but bigger chambers as well. Makes sense as they came on a larger engine. You may lose a tad bit of compression in exchange for better flow. It will be fine. I would choose a 3200-4k converter depending on how aggressive you are trying to be.
Joined: Aug 2007
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From: Turnin' Wrenches Infractions: 005
I have heard that going to 40 could cause intake alignment issues. That being said, there still is no reason to run on the ragged edge. I dont know what ptv clearance would be but I like to play it a little on the safe side. A good thing to do would be to measure your ptv, then use that to help you decide how much to mill.