with double roller timing chain and LS6 oil pump.
Built by Erik Koenig at HPE (Horsepower Engineering) in texas. Erik is the head machinist instructor at S.A.M. (school of automotive machinist) and is highly regarded in the industry.

The motor consits of a handpicked and sonic tested GMPP iron 6.0 block bored to 4.062
Forged Eagle crank
Callies compstar rods 6.125 length
Diamond custom nitrous pistons with 7 cc dish/reliefs
Diamond TNT select nitrous rings
Clevite bearings (PN upon request)
Rollmaster double LS1 timing set
GMPP LS6 oil pump...ported for added oil flow
Blanced at HPE in Texas
ARP main stud kit

This is not your typical $4000 LS1 short block. The pistons and rings where $1200 alone
Machine work and balance are top notch.
This would be about $5200 to duplicate.

As soon as it comes back from the machine shop in a week or two it will have new TNT select nitrous rings and brand new bearings. Everything has been checked and cleaned. Ready to go for 900+ rwhp.

I made 560 rwhp NA and approx 850 with nitrous with this motor.

Ill let it go locally for $4000 and will include an LS1 stand