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LS3 Carbed build
Posted: Fri Nov 17, 2017 11:14 am
by CGT
I have a complete LS3 core laying around. I've held on to it figuring there will be a point when my supercharged LS3 Camaro's stock shortblock will give up on me.
I have a friend that runs a carbed(methanol) LS in his bracket car. His motor is tired, and he wants to replace it or fix it. I'm thinking about building an engine for him with this core(or to keep as a dyno mule)
What do you guys think it could make? I want to use as many factory parts as possible(crank, rods, valves, rockers etc.) Any ideas or guesses?
4.070 x 3.622
14:1 Compression
Hydraulic Roller (under .700 lift)
LS3 heads
Super Victor Intake
Re: LS3 Carbed build
Posted: Fri Nov 17, 2017 12:50 pm
by Frankshaft
CGT wrote: ↑Fri Nov 17, 2017 11:14 am
I have a complete LS3 core laying around. I've held on to it figuring there will be a point when my supercharged LS3 Camaro's stock shortblock will give up on me.
I have a friend that runs a carbed(methanol) LS in his bracket car. His motor is tired, and he wants to replace it or fix it. I'm thinking about building an engine for him with this core(or to keep as a dyno mule)
What do you guys think it could make? I want to use as many factory parts as possible(crank, rods, valves, rockers etc.) Any ideas or guesses?
4.070 x 3.622
14:1 Compression
Hydraulic Roller (under .700 lift)
LS3 heads
Super Victor Intake
700+
Re: LS3 Carbed build
Posted: Fri Nov 17, 2017 1:09 pm
by CGT
Frankshaft wrote: ↑Fri Nov 17, 2017 12:50 pm
CGT wrote: ↑Fri Nov 17, 2017 11:14 am
I have a complete LS3 core laying around. I've held on to it figuring there will be a point when my supercharged LS3 Camaro's stock shortblock will give up on me.
I have a friend that runs a carbed(methanol) LS in his bracket car. His motor is tired, and he wants to replace it or fix it. I'm thinking about building an engine for him with this core(or to keep as a dyno mule)
What do you guys think it could make? I want to use as many factory parts as possible(crank, rods, valves, rockers etc.) Any ideas or guesses?
4.070 x 3.622
14:1 Compression
Hydraulic Roller (under .700 lift)
LS3 heads
Super Victor Intake
700+
Really? I was thinking quite a bit less than that.
Re: LS3 Carbed build
Posted: Fri Nov 17, 2017 1:14 pm
by Frankshaft
I guess it all depends. But it is possible. 650 real easy.
Re: LS3 Carbed build
Posted: Fri Nov 17, 2017 1:37 pm
by CGT
Frankshaft wrote: ↑Fri Nov 17, 2017 1:14 pm
I guess it all depends. But it is possible. 650 real easy.
Yeah i was kinda thinking 650. But I honestly dont know what to expect. Any tips or ideas on anything Frankshaft? Valve events, porting, valve job?
Thanks
Chad
Re: LS3 Carbed build
Posted: Fri Nov 17, 2017 2:08 pm
by autogear
Fill out a cam request for Jones Cams?
Re: LS3 Carbed build
Posted: Sat Nov 18, 2017 9:44 am
by CGT
No more biters?
Re: LS3 Carbed build
Posted: Sat Nov 18, 2017 9:48 am
by Frankshaft
They respond to less intake duration, big spreads on ex, and WIDE lobe seps. like out to 118. Being a carb and 14:1 on methanol, could throw a monkey wrench in that, never ran one with that combo.
Re: LS3 Carbed build
Posted: Sat Nov 18, 2017 10:36 am
by CGT
Frankshaft wrote: ↑Sat Nov 18, 2017 9:48 am
They respond to less intake duration, big spreads on ex, and WIDE lobe seps. like out to 118. Being a carb and 14:1 on methanol, could throw a monkey wrench in that, never ran one with that combo.
Thanks. I'm looking at COMP CAMS LOBE#13065 Intake #3447 Exhaust on 111 or 112 currently. Have you messed with the heads much?
Re: LS3 Carbed build
Posted: Sat Nov 18, 2017 1:28 pm
by randy331
What do the LS engine builders think of the GM 88958675 intake for LS ?
Or what other one should I look at ?
Got 6.0 that I'm doing that will get a single plane and carb.
4.030 bore" x 4" stroke, 10.5-1 comp- ported 243 casting heads, 243-258 @ .050" Comp Hyd roller. Mahle flat tops with 1mm 1mm 2mm rings.
How much power should I expect from this one ?
Hope Chad don't mind me posting this LS on here too ??
Randy
Re: LS3 Carbed build
Posted: Sat Nov 18, 2017 3:07 pm
by CGT
randy331 wrote: ↑Sat Nov 18, 2017 1:28 pm
What do the LS engine builders think of the GM 88958675 intake for LS ?
Or what other one should I look at ?
Got 6.0 that I'm doing that will get a single plane and carb.
4.030 bore" x 4" stroke, 10.5-1 comp- ported 243 casting heads, 243-258 @ .050" Comp Hyd roller. Mahle flat tops with 1mm 1mm 2mm rings.
How much power should I expect from this one ?
Hope Chad don't mind me posting this LS on here too ??
Randy
Id guess 625hp and 560 torque on yours but who knows.
I believe the 88958675 is the same as Edelbrock 28097. But I can find any published information on sizes for any of the LS carbed intakes.
I dont know if i should do the Victor Jr or Super Victor on mine, 4150 or 4500. Anyone know anything about any of these manifolds?
Re: LS3 Carbed build
Posted: Sun Nov 19, 2017 9:35 am
by CGT
Resized_20160609_102625.jpeg
Would it be worth offset doweling the cylinder head over?
Re: LS3 Carbed build
Posted: Sun Nov 19, 2017 3:38 pm
by A_VAS
what bore you sitting on there? 4.070 ?
Re: LS3 Carbed build
Posted: Sun Nov 19, 2017 4:08 pm
by CGT
A_VAS wrote: ↑Sun Nov 19, 2017 3:38 pm
what bore you sitting on there? 4.070 ?
Thats 4.005 pictured. I will be using a 4.070.
Re: LS3 Carbed build
Posted: Sun Nov 19, 2017 4:21 pm
by JodyB
Dual 4 hi-ram:)