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LT4 FP/injectors for LT1 with a blower

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Old Feb 27, 2020 | 09:26 PM
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Default LT4 FP/injectors for LT1 with a blower

Aloha Corvette Family,

I am not sure if this has been covered or discussed in previous threads. I apologize in advance if it has been and if so, please route me in the right direction to find that thread. I am planning on supercharging my 2016 Z51 this Spring. The status of my car right now is you basic bolt-ons
Katech TB
Halltech CAI
MSD Intake Manifold
Kook LT's w Off-road X-pipe

The car dyno'd 431rwhp 440tq with that being said I know its a stretch, but I am looking for about 580rwhp - 620rwhp with the blower. I know fueling is going to be my Foe. I know most people usually add meth with this type of setup. I am trying to find to see if anyone has used the Lingenfelter Big Bore LT4 fuel pump, and is there a big difference over the stock Fuel Pump. Also, if I added the LT4 Fuel Pump along with the Injectors, are the power levels above reachable, or will I have to also add a Cam with a higher Fuel Lope to take advantage of the LT4 Fuel Pump and injectors. My end state the goal is to forge the engine eventually. I currently have a Cam Kit but waiting to get all the other components, i.e. Drop-In Pistons/Rods, Torque Converter, and all the other support components. Anyone input will be much appreciated. Everything hopefully makes sense.
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Old Feb 28, 2020 | 01:29 PM
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If you're keeping stock compression I would go Vengeance racing drop in pistons. If you think in the future you might want more power then I suggest rods and pistons also available in direct drop ins.

Fuel wise I'm going lt4 pump and injectors, 32 fuel lobe on the cam, and dual nozzle meth. I think you goal are definitely reachable, with lt4 components.

If you end up looking for a blower set up let me know, I have a D1 pro charger set up.
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Old Mar 1, 2020 | 03:51 AM
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Originally Posted by RGHIIZ06
If you're keeping stock compression I would go Vengeance racing drop in pistons. If you think in the future you might want more power then I suggest rods and pistons also available in direct drop ins.

Fuel wise I'm going lt4 pump and injectors, 32 fuel lobe on the cam, and dual nozzle meth. I think you goal are definitely reachable, with lt4 components.

If you end up looking for a blower set up let me know, I have a D1 pro charger set up.

Thanks
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Old Mar 2, 2020 | 11:22 AM
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With the lt4 pump and injectors and supercharger mine was able to get 620 on 93oct at 9.5psi on a stock long block. It was recommended that I run methanol if I planned on beating on it and have since installed that and alky kit which also helped a lot with iat2. I'm not 100% sure but I think the high side still has more left in it and its the low side fuel system that is causing the limiting factor.
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Old Mar 2, 2020 | 01:33 PM
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Originally Posted by us3rname
With the lt4 pump and injectors and supercharger mine was able to get 620 on 93oct at 9.5psi on a stock long block. It was recommended that I run methanol if I planned on beating on it and have since installed that and alky kit which also helped a lot with iat2. I'm not 100% sure but I think the high side still has more left in it and its the low side fuel system that is causing the limiting factor.
us3rname that's what I was shooting for, just wasn't ready to drop the Cam in yet. Since the whole bottom of the car is lowered down, lol. I wanted to do everything if I am going to have the whole subframe dropped in pistons/Rods, Cams, Torque Converter all the goodies. If I can run the LT4 Pump and Injectors with the Meth Kit and get 600 range, I would be cool with that for a while. Until the power bug bites me again.
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