LQ4 with 5463 Heads/LS3 Intake......
Thread Starter
TECH Fanatic
Joined: Dec 2005
Posts: 1,414
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LQ4 with 5463 Heads/LS3 Intake...... Not sure if I should be asking these questions, and starting the Big Debate, Rectangle vs Cathedral Head. So, figured with the other thread being active I would this question out again, like the other 100 plus threads, but different. This will be a future Budget build, just a DD, weekend thrill seeker. Ported Heads, Aftermarket Heads are Not an Option!!! I'm the type of person who likes using/improving what the factory gave us, for the most part.
Will LS7 lifters and Pac 1218 springs survive, and what cam specs should used? Should flat top pistons be used, or will make that much of a difference?
Thanks.
Will LS7 lifters and Pac 1218 springs survive, and what cam specs should used? Should flat top pistons be used, or will make that much of a difference?
Thanks.
TECH Senior Member
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
If the 5463 head is a rectangular port head, the LS3 manifold will fit. Why ask if 1218 springs and LS7 lifters will survive if you haven't told us which cam would be working with them? You are putting the cart before the horse.
Thread Starter
TECH Fanatic
Joined: Dec 2005
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I'm unsure about the cam, I really dont want the quick opening/closing profile donkey dick cam, duration I'm thinking a 224/232 roughly, nothing over .600". I still need to concerned with fuel mileage, but I want something that takes advantage of the increased flow of the rectangle port heads. I basically want my cake and eat it too. As for now the trans will be manual, but an auto will be put in at some point, weight of vehicle will be about 3200/3400lbs.
thanks.
thanks.
TECH Senior Member
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
If you are worried about a ragged-opening and closing cam, check with Cam Motion and Texas Speed and Performance. Their cams are designed right. TSP has ground their own for a while now, having switched from having Comp grinding theirs. Supposedly their quality has jumped up since doing this. Both companies will grind you a good cam. For what it looks like you want, LS7 lifters and 1218 springs should do the job nicely.
In fact for a nice-running cam that sounds good and still delivers decent low end performance, check into the WS6store High-Lift Hot Cam. They took the GM Hot Cam design which has a lift of only .525, and came up with a smoother-operating cam with more performance and a lift of a hair under .600. Your LQ4 will love it.
In fact for a nice-running cam that sounds good and still delivers decent low end performance, check into the WS6store High-Lift Hot Cam. They took the GM Hot Cam design which has a lift of only .525, and came up with a smoother-operating cam with more performance and a lift of a hair under .600. Your LQ4 will love it.
If you are worried about a ragged-opening and closing cam, check with Cam Motion and Texas Speed and Performance. Their cams are designed right. TSP has ground their own for a while now, having switched from having Comp grinding theirs. Supposedly their quality has jumped up since doing this. Both companies will grind you a good cam. For what it looks like you want, LS7 lifters and 1218 springs should do the job nicely.
In fact for a nice-running cam that sounds good and still delivers decent low end performance, check into the WS6store High-Lift Hot Cam. They took the GM Hot Cam design which has a lift of only .525, and came up with a smoother-operating cam with more performance and a lift of a hair under .600. Your LQ4 will love it.
In fact for a nice-running cam that sounds good and still delivers decent low end performance, check into the WS6store High-Lift Hot Cam. They took the GM Hot Cam design which has a lift of only .525, and came up with a smoother-operating cam with more performance and a lift of a hair under .600. Your LQ4 will love it.
Also the ASA high lift cam i just installed in a 6liter build was .600” lift on both sides.
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Joined: Sep 2004
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Comp has literally hundreds of lobes to choose from (maybe in the four digits in fact). The level of aggressiveness purely up to the lobes the guy designing the cam chooses to select (and I work directly with their head designer at times creating lobes.....sometimes just slowing down an existing family of lobes and reducing lift or just the opposite....sky is the limit).
Not to mention with the right springs and lightweight parts, aggressive lobes make more power and exhibit excellent control but its always about the set up and the application.
Check out the depth and variety of what Comp offers in the latest Comp Master lobe list (its only a Google away).....these are just the lobes that are listed....there are other lobes that they offer that aren't even in the catalog
Comp is a giant....50 ish years in business and they have a much larger R&D budget....also they have been doing spintron testing alot longer than most
Anyway....I have read similar comments about Comp and I usually just chuckle to myself and click to the next thread or tab on my computer to keep working.....decided to drop in and shed some new light on this subject this time
-Tony
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www.mamomotorsports.com
Tony@MamoMotorsports.com
Anything worth doing is worth doing well. Build it right the first time....its alot cheaper than building it twice!!
www.mamomotorsports.com
Tony@MamoMotorsports.com
Anything worth doing is worth doing well. Build it right the first time....its alot cheaper than building it twice!!
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Not sure if I should be asking these questions, and starting the Big Debate, Rectangle vs Cathedral Head. So, figured with the other thread being active I would this question out again, like the other 100 plus threads, but different. This will be a future Budget build, just a DD, weekend thrill seeker. Ported Heads, Aftermarket Heads are Not an Option!!! I'm the type of person who likes using/improving what the factory gave us, for the most part.
Will LS7 lifters and Pac 1218 springs survive, and what cam specs should used? Should flat top pistons be used, or will make that much of a difference?
Thanks.
Will LS7 lifters and Pac 1218 springs survive, and what cam specs should used? Should flat top pistons be used, or will make that much of a difference?
Thanks.
I'm unsure about the cam, I really dont want the quick opening/closing profile donkey dick cam, duration I'm thinking a 224/232 roughly, nothing over .600". I still need to concerned with fuel mileage, but I want something that takes advantage of the increased flow of the rectangle port heads. I basically want my cake and eat it too. As for now the trans will be manual, but an auto will be put in at some point, weight of vehicle will be about 3200/3400lbs.
thanks.
thanks.
It would be my privilege to help you get the perfect camshaft for your project. I will make sure that you get the right cam specs, lobes and supporting parts to assure your build is a success. Just drop me an email: Steven at CamMotion.com with all the details of your build, desired driving characteristics and performance goals. I will put you together a recommendation and a quote.
~Steven
