LS3 swapped 370z
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Teching In
Joined: Jul 2023
Posts: 3
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From: Round Rock, Tx
LS3 swapped 370z I'm having some rough idling issues after LS3 swapping my 370z. My diagnostic scanner says all 8 cylinders are misfiring.
This is what I have installed:
The engine came from sikky and the LS3 6.2 liter crate engine is beefed up by them. This is what is on the website for the engine I ordered:
N/A – 416 ci LS3 based aluminum block Peak Horsepower: 598 whp @ 5900 rpm (rated at the wheels) Peak Torque: 575 lb/ft @ 5050 rpm (rated at the wheels) Compression Ratio: 11.6:1 Required Fuel: 91+ Octane Pump Gasoline Forged Pistons – 4.070 Bore, 4.0 Stroke Forged Steel Crank 1500hp Rated Forged 6.125″ Connecting Rods Sikky/AFR Cylinder Heads Comp Cams Camshaft 235/251, 621@113 LSA Upgraded Trunnions LS7 Lifters Pro Series .080 4130 Chromoly Pushrods Melling Performance Oil Pump GM Performance Assembly Components *All hp numbers will be within 2% of the advertised number* Sikky Manufacturing hand built LS engines feature the best components and are assembled by professional machinists. All hand built engines feature a balanced and blueprinted block with forged internals. We also partnered with AFR (Air Flow Research) to equip these engines with CNC cylinder heads. These builds have been track tested for maximum reliability and performance. *Horsepower numbers are at the wheels on a Dynapack dyno with stock LS3 intake manifold and throttle body, Sikky 1 7/8” headers, and Sikky 4” intake/filter*
I also ordered a t56 transmission, drive shaft, and wiring harness through sikky.
When I contacted wiring specialties who is who sikky went through for the harness I got a e38 computer from them. My diagnostic scanner says the ECU is a 2010 GMC Yukon 5 3L. Their website says that the ECU is flashed for start-up only and is designed to allow the engine to start without vats and emission fault protocols. I installed everything myself if I know means am I no mechanic but I just spent almost 30 something thousand dollars on all this and all I want to do is drive my car all this started in February we're now in the middle of July almost and I just could really use some help getting this thing running please. Thank you
This is what I have installed:
The engine came from sikky and the LS3 6.2 liter crate engine is beefed up by them. This is what is on the website for the engine I ordered:
N/A – 416 ci LS3 based aluminum block Peak Horsepower: 598 whp @ 5900 rpm (rated at the wheels) Peak Torque: 575 lb/ft @ 5050 rpm (rated at the wheels) Compression Ratio: 11.6:1 Required Fuel: 91+ Octane Pump Gasoline Forged Pistons – 4.070 Bore, 4.0 Stroke Forged Steel Crank 1500hp Rated Forged 6.125″ Connecting Rods Sikky/AFR Cylinder Heads Comp Cams Camshaft 235/251, 621@113 LSA Upgraded Trunnions LS7 Lifters Pro Series .080 4130 Chromoly Pushrods Melling Performance Oil Pump GM Performance Assembly Components *All hp numbers will be within 2% of the advertised number* Sikky Manufacturing hand built LS engines feature the best components and are assembled by professional machinists. All hand built engines feature a balanced and blueprinted block with forged internals. We also partnered with AFR (Air Flow Research) to equip these engines with CNC cylinder heads. These builds have been track tested for maximum reliability and performance. *Horsepower numbers are at the wheels on a Dynapack dyno with stock LS3 intake manifold and throttle body, Sikky 1 7/8” headers, and Sikky 4” intake/filter*
I also ordered a t56 transmission, drive shaft, and wiring harness through sikky.
When I contacted wiring specialties who is who sikky went through for the harness I got a e38 computer from them. My diagnostic scanner says the ECU is a 2010 GMC Yukon 5 3L. Their website says that the ECU is flashed for start-up only and is designed to allow the engine to start without vats and emission fault protocols. I installed everything myself if I know means am I no mechanic but I just spent almost 30 something thousand dollars on all this and all I want to do is drive my car all this started in February we're now in the middle of July almost and I just could really use some help getting this thing running please. Thank you
