Here are the specs on the motor, just looking for input and maybe other peoples experiences. I really just want to know how much the ls6 intake is going to hurt my numbers! This motor was built for nitrous, the car is already set up for a wet shot from the previous motor.

Short Block (Built by STK Performance)
LQ4 6.0L iron block bored and honed to 4.065
Custom Diamond Flat top pistons -5.5cc/ Total Seal AP rings/Trends 2.200 wrist pin
Eagle 6.125 rods w/ARP 2000 rod bolts
Eagle 4.00" stroke crankshaft
Clevite rod and main bearings
ARP Main Studs/Side Bolts Kit
ARP Head Stud Kit
Fel-Pro MLS 4.100 bore .053”thick
Meziere Electric Water Pump and Motorad thermostat
Ported LS6 oil pump

Valvetrain
Comp Cams Hi-Tech Roller Adjustable Timing Sprocket
LS2 Timing chain
Comp XE R lobes, 244/248 .612/.615 112+2 cam
Comp cam 4.125 hardened pushrods
Comp lifters w/GM Lifter Trays

Heads
All-Pro Cylinder Heads (Ported by Folks Machine) 345cfm @ .600
Ferrea 2.08 Intake, 1.60 Exhaust Valves
Comp Cam Dual Valve Springs/Ti Retainers
Harland Sharp 1.7 Roller Rockers

Exhaust
Breathless Performance Step Headers 1 3/4-1 7/8
SLP Loudmouth exhaust

Induction
Port Matched Ls6 intake manifold
Hand ported Breathless Performance TB
Return style fuel system
Manual fuel pressure regulator
DIY dual walbro fuel pumps
Delphi 42lb injectors
Breathless Performance Vortex Intake system

Compression is right at 12.8:1-13:1
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Let me know what you think..... thanks

 

No!

 

haha thanks

 

I have 650 rwhp on an ls6 intake but im blown on stock 346

 

You could try a ported ls2 intake with 90mm TB that would get you close