ls3 heads twin turbo
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ls3 heads twin turbo
OK I am new to this LS world and Im building a tt setup for my 62 Buick. I have started with an Lq4 truck motor. I was getting ready to order springs and have some basic freshen up work done on the heads. My question is would the springs that come with a new set of LS3 heads handle a typical cam for a 700 hp turbo cam? Would the 317 rockers need to be replaced? I'm trying to decide if it would be more practical to just order new heads. I need to make a decision quick cause im ordering that holley hi ram efi intake tuesday.Thanks for sharing your knowledge!!
#2
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Stock LS3 springs are not rated for much over a stock cam.
You will have to get a good spring setup.
Rockers are typically reusable unless you go with a really wild cam.... thinking you will be somewhat conservative since it is a turbo car. Problem is that LS1/LS2/LQ4 rockers do not fit a LS3 head
Obviously a set of aftermarket heads or a built/CNC ported set of stockers from a vendor here would have everything you need in a turnkey package, fully assembled.
Once you start buying springs, valves, getting a valve job & cutting the deck surface, it becomes apparent that a set already modified is not a bad deal.
If you want a DIY solution, I have multiple sets of new stock LS1/2 valves springs, retainers & locks here from heads I used to modify. I also recently removed a new set of LS3 springs, retainers, locks & seals from a set of heads here.
Feel free to call if you want any of these parts, I'll make you a good deal on them.
You will have to get a good spring setup.
Rockers are typically reusable unless you go with a really wild cam.... thinking you will be somewhat conservative since it is a turbo car. Problem is that LS1/LS2/LQ4 rockers do not fit a LS3 head
Obviously a set of aftermarket heads or a built/CNC ported set of stockers from a vendor here would have everything you need in a turnkey package, fully assembled.
Once you start buying springs, valves, getting a valve job & cutting the deck surface, it becomes apparent that a set already modified is not a bad deal.
If you want a DIY solution, I have multiple sets of new stock LS1/2 valves springs, retainers & locks here from heads I used to modify. I also recently removed a new set of LS3 springs, retainers, locks & seals from a set of heads here.
Feel free to call if you want any of these parts, I'll make you a good deal on them.
Last edited by Lonnies Performance; 08-31-2012 at 08:38 AM.
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Thanks for the info guys,this is a friendly site. Brian I think I remember you from the days I was racing with Chris Ridge. I had the S10 with the 106mm turbocharged sb2 motor down at the valley. I'll give you a call for springs.