LS3 Carbed build
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Re: LS3 Carbed build
Seems like way to much cam for that deal, atleast to me it does. My buddys 416 ls3 head ls3 intake makes 530’s at the tire in a manual trans fbody thru a 9”. Its running a btr stroker cam which is i think 239/254 on a 114. It peaks at 6000 due to the ls3 intake but holds power to 6800. Smaller cubes and different intake it would peak alot higher
Re: LS3 Carbed build
Yeah. Im hoping for a considerably higher peak than that. Will likely end up in a bracket car with 5500 plus converter. 14.5:1. The cam wont be ordered for awhile. What would you recommend if it was yours?Orr89rocz wrote: ↑Thu Mar 29, 2018 6:36 pm Seems like way to much cam for that deal, atleast to me it does. My buddys 416 ls3 head ls3 intake makes 530’s at the tire in a manual trans fbody thru a 9”. Its running a btr stroker cam which is i think 239/254 on a 114. It peaks at 6000 due to the ls3 intake but holds power to 6800. Smaller cubes and different intake it would peak alot higher
Re: LS3 Carbed build
Thats pretty typical results for that kind of deal. Ported heads?Orr89rocz wrote: ↑Thu Mar 29, 2018 6:36 pm Seems like way to much cam for that deal, atleast to me it does. My buddys 416 ls3 head ls3 intake makes 530’s at the tire in a manual trans fbody thru a 9”. Its running a btr stroker cam which is i think 239/254 on a 114. It peaks at 6000 due to the ls3 intake but holds power to 6800. Smaller cubes and different intake it would peak alot higher
Re: LS3 Carbed build
No bone stock heads and ls3 efi manifold. A single plane that allowed higher peak would likely make more hp for sure but lose alot under 5500. No prob with a auto but hes a t56 6 spd. Been 10.45 at 131 at 3400 lbs shifting gears lol its got alot left cuz we have done little suspension tuning and had old 26” slicksCGT wrote: ↑Thu Mar 29, 2018 9:37 pmThats pretty typical results for that kind of deal. Ported heads?Orr89rocz wrote: ↑Thu Mar 29, 2018 6:36 pm Seems like way to much cam for that deal, atleast to me it does. My buddys 416 ls3 head ls3 intake makes 530’s at the tire in a manual trans fbody thru a 9”. Its running a btr stroker cam which is i think 239/254 on a 114. It peaks at 6000 due to the ls3 intake but holds power to 6800. Smaller cubes and different intake it would peak alot higher
Maybe a cam more in the low mid 240’s for stock stroke but i am no ls expert. Lol. Just know the cam my buddy runs they make a bigger one that only picks up 10 at peak but loses alot down low. But again thats efi intake with long runners
Re: LS3 Carbed build
Overflowz progress! Moo
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Re: LS3 Carbed build
Not yet. Cant make up my mind.. but it will most likely end up being a 2821 Edelbrock. The Mast and CID manifold are just out of budget.
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Re: LS3 Carbed build
Then are they really Engine masters? Or just a parts installer?JRWooton wrote: ↑Fri Feb 02, 2018 1:57 pm If you check out the PHR Jan '12 issue, these guys at D&A Machine in Georgia built a torque beast for the Engine Masters thing. IIRC, 580hp, 580 lb/ft. I called them last week. Said you could easily duplicate it. GMPP LS3 cnc'd heads at 750 ea, $2000 408 stroker kit, $250 intake, $600 carb, etc. What I liked about the motor was it was at 530 ft/lb at 2500RPM.
Just a suggestion.
Cgt is actually going outside the box like real engine masters. Not buy a bunch of mediocre parts and assemble them. Get it?
Re: LS3 Carbed build
I appreciate the kudos, but im not sold on this thing being any kind of world beater. I dont have any sort of reference point to compare to on this one. But im certain i will learn and have some fun for not a fortune invested. . Im still open for suggestions btw.Frankshaft wrote: ↑Thu Jul 05, 2018 6:59 pm Cgt is actually going outside the box like real engine masters. Not buy a bunch of mediocre parts and assemble them. Get it?
As far as the 408 mentioned with the gmpp cnc heads etc. That stuff is a dime a dozen. That stuff runs "fine"....but those parts wont make 580lbs like mentioned. Not even close really.
Re: LS3 Carbed build
First cam.
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Re: LS3 Carbed build
Why such a large split to the exhaust side? Are the LS heads that bad on the exhaust that you need to crutch them with a big split like on a CJ BBF head?
Re: LS3 Carbed build
Care to elaborate? I'm learning here too. I'm interested because I have a coworker who is building an LS engine for in his Nova...
Re: LS3 Carbed build
Well I dont claim to have absolutes, this cam may not run that great, but I thought it could teach me a few things about the next cam ill try.
Their were a few compromises made in order to have a cam that was suitable to grind into what I may want to try next. I also havent seen much of any alignment between ex flowz and duration requirements.
Re: LS3 Carbed build
Will you be using adjustable valvetrain? Have you given any thought to a solid roller?