LS3 Carbed build
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Re: LS3 Carbed build
Project Overflowz
HR313/417 313 258 180 .4170 .000 CRA .709 Lift 1.7 Rocker Ratio
HR335/405 335 272 187 .4050 .000 CRS .689 Lift 1.7 Rocker Ratio
Intake Duration @ .050 258
Exhaust Duration @ .050 272
LSA: 111
Intake Centerline: 107
IVO is 22.0 ° BTDC ( - indicates ATDC)
IVC is 56.0 ° ABDC
EVO is 71.0 ° BBDC
EVC is 21.0 ° ATDC ( - indicates BTDC)
Overlap is 43 °
Any opinions?
HR313/417 313 258 180 .4170 .000 CRA .709 Lift 1.7 Rocker Ratio
HR335/405 335 272 187 .4050 .000 CRS .689 Lift 1.7 Rocker Ratio
Intake Duration @ .050 258
Exhaust Duration @ .050 272
LSA: 111
Intake Centerline: 107
IVO is 22.0 ° BTDC ( - indicates ATDC)
IVC is 56.0 ° ABDC
EVO is 71.0 ° BBDC
EVC is 21.0 ° ATDC ( - indicates BTDC)
Overlap is 43 °
Any opinions?
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Re: LS3 Carbed build
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Re: LS3 Carbed build
Sure. Is it lucrative?
Re: LS3 Carbed build
It’s been said that Lifts over .625-.630 and the OEM rocker is scuffing the valve tips instead of rocking. Shaft rockers or at least pedestal mount roller tipped Comps are in your future with lifts near .700. I hear Texas Speed has a roller tipped bolt down OEM style rocker now, but about all I know of it. What’s the rpm range he spins the original one to?
Re: LS3 Carbed build
Yes. They do get a little raunchy at above those lifts but I have a semi-solution for that. I intend on running as many production parts as i can. Im not wanting to add any weight, cost or complexity to this.D.B.O. wrote: ↑Sat Jan 27, 2018 8:17 pm It’s been said that Lifts over .625-.630 and the OEM rocker is scuffing the valve tips instead of rocking. Shaft rockers or at least pedestal mount roller tipped Comps are in your future with lifts near .700. I hear Texas Speed has a roller tipped bolt down OEM style rocker now, but about all I know of it. What’s the rpm range he spins the original one to?
Re: LS3 Carbed build
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.
Just a suggestion.
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Re: LS3 Carbed build
Gnarly is good. I think my original prediction is possible.
Re: LS3 Carbed build
That would be a nice surprise. But, I really don't know what to expect honestly. Thanks for the input.Frankshaft wrote: ↑Fri Feb 02, 2018 2:38 pmGnarly is good. I think my original prediction is possible.
Re: LS3 Carbed build
Yeah, I'm going in a different direction than that kind of a build.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.
Re: LS3 Carbed build
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