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Mast Motorsports L99

L99 416
Specs:
Type: Displacement: Compression Ratio: Bore x Stroke:
Rev Limit:
Crank:
Rods:
Pistons:
Cam:
Heads:
Intake:
Valve Springs:
570 HP
L99 6.8L
416 Cubic Inches
11.2:1
4.070 x 4.000
7000 RPM
Callies Forged
Callies H-Beam
Mahle Motorsports
Mast Custom VVT Core Cam LS3/L92 Heads
LS3Car Intake
Mast Nitrided Beehive
LS3 Aluminum Block
Plateau Honed to 4.070”
True Surfaced Deck
Engine Block Debured Blueprinted Shortblock
GM Car Harmonic Damper
ACL Rod and Crank Bearings Callies 4.000 Stroked Crankshaft Callies H-Beam Connecting Rods Mast/Mahle Motorsports Pistons LS3/L92 Cylinder Heads
ARP Head Bolts
ARP Main Studs
Cometic Headgaskets
GM VVT Phaser with Restrictor
Mast VVT Core Custom Hydraulic Roller Cam LS3 Hydraulic Roller Lifters
Mast Black Label Pushrods
Mast Nitrided Beehive Valve Springs
M-90 Calibrated ECM
M-90 Main Wiring Harness
MAP/IAT Harness
Dual Bosch EGO Sensor
LS3 IAFM
GM 90mm DBW Throttle Body
Bosch Dead Headed Fuel Rail
Bosch LS3 Fuel Injectors
Mast 8 Layer Air Filter with IAT Bung
Intake Air Temperature Sensor 560-2218 | info@ Crankshaft Position Sensor
Camshaft Position Sensor
Oil Pressure Sensor
Oil Temperature Sensor
Engine Coolant Temperature
Engine Knock Sensors
Manifold Air Pressure Sensor
Ignition Coils
Spark Plugs
Plug Wires
GM Foot Pedal
GM Starter
GM Oil Filter
Engine Break in Oil Additive
Your choice of F-Body, Y-Body, or Truck Water Pump, Balancer, and Oil Pan
Runs on Premium 91-93 Octane
Posted via Mobile Device

wow......talk about taking it to another level.....nice choice

Nice$$$
Posted via Mobile Device

Does that engine have a functionin VVT? Will you run an auto or manual tranny?

It's a VVT motor, running a Gearstar Transmission 4L65E built to motor specs, tranny built to 600hp and 600lbs of torque.......motor dyno'd at 578 hp
Posted via Mobile Device

This is same motor .....so it should sound pretty sweet when I fire it...

http://m.youtube.com/#/watch?v=Rwr-X...%3DRwr-XhB4l9E
Posted via Mobile Device

thats gonna be bad ass bro...

WOW! That is even more power than my VVT motor. I´m running around 500 HP on my L92 with functioning VVT and full ´08 Emissions. You will love the VVT, the torque band is amazing! I love mine!

front bumper all tucked in for the night....lol

Nice! Was thinking of doing that on my shop truck....sectioning and capping it...
Posted via Mobile Device

Very cool Jim, love the bumper. Shaving the bolts goes a long ways too!

Take notes bumper Tucker's, this is how it should be done. :)
Posted via Mobile Device

Your metal fabricator is the God of Fab!!

^^^^I agree
Posted via Mobile Device
Posted via Mobile Device

^^^^^this is a awesome fabricator^^^^^^
Posted via Mobile Device

Looks absolutely amazing!!!! I love it when people just make the original just look that tiny little bit better than stock, without going overboard. Will you put the bumper triagular mounts from the fram to the bumper back in??

Thanks for the compliments, no triangular mounts....they are tucked and narrowed enough now that the vibrating will be minimal so we're running a small one to the rad support only and losing the long ugly one to the frame. Also shaved all the bolts of for a cleaner look. Not doing any off the wall stupid stuff to it....trying to build it as if GM built a slammed 77 LS powered Truck. Going to make some slight mods but to the average eye it will look stock, it will take a C-10 enthusiast to notice the subtle changes.

That Mo-Fo, is going to be NASTY!!!!

I´ve seen Stacey David doing that to his Copperhead C10 and it makes an unbelievable difference but still subtle enough that most people don´t realize!

That kind of effort to pull off such a small detail is what makes trucks/builds like this a notch above the rest.