Marcus S

Mast Motorsports put together this beauty . It was built for a land speed vehicle, which means you probably won't be seeing it in the engine bay of a 4th gen Camaro anytime soon. That's a shame considering how well this thing performs. Without the help of nitrous, they've got it making 580 horsepower. On the laughing gas it makes 817 hp. Not bad for a 5-liter.

Spectre86

iTrader: (42)

wow. 8000 rpms sounds nice too. any specs on the build?

badformulaLS1

iTrader: (1)

Sick. Its a 4.8 bored to a 5.0 right?

dezlfrek

iTrader: (1)

mine is 301 cu in with a 3.830 bore and 4.8 crank which is a .050 over bore

ussteel

iTrader: (8)

Video says 4.155 bore so must be a sleeved block.. and 2.8 stroke WOW

LS1rob00

iTrader: (9)

Damn good numbers for the ci!

93Z2871805

iTrader: (5)

It's an RHS block. Look at the stamp under the driver's side head at 0:09.

Pumba

Nice motor. I like how MAST hooked up the Hilborn injectors to a drive-by-wire motor.

1.826 SAE Hp/cubic inch or 110.9 SAE Hp/Liter is great for a NA engine.

-

Tig

Wow, that's insane.
Anybody have any idea of what its going in?

Stang2Goat

8000rpm through ITB velocity stacks screams GTFO...

I want one in my living room as a conversation piece.

zippy

That is very good power for the cubic inch. As you can see it isn't a usable street engine though. That same setup with a 4" stroke would have made way more power and a crap load more torque. Obviously it was built with a specific cubic inch in mind and that was the best way to make the power. That big bore allowed for a head big enough to make the power when using a 2 valve configuration and a stroke short enough to keep the cubic inch within limits. That would make for a cool replacement in an old first gen Camaro from the Trans Am series where 5.0L was the limit. That would be an interesting engine for them to build using VVT.