For sale is a pair of professionally rebuilt LS heads, casting number 243.
These originally came off of a 2009 GMC Sierra with a 5.3.
They have the updated and improved copper sintered valve seats.
The following have been completed:
*Heads were disassembled, cleaned, and pressure tested for cracks.
*All bolt holes were inspected, chased, and repaired as needed.
*All valves, guides, seats, springs, keepers, and retainers were checked and reconditioned or replaced as needed.
*All new bronze valve guides were installed and honed to size.
*The valve seats were cut using our Rottler SG7 seat and guide machine with a performance 5 angle seat profile
on the intakes and radius profile on the exhaust side.
*Heads were milled ~.010".
*Heads were assembled with new valve stem seals and new GM blue springs (12499224) with a max valve lift of
We are asking $1015.00. This does include a $300 core charge. Call us if you have similar cores (Casting # 243 or 799) to exchange. Also we will accept other LS heads as cores, but the value will vary based upon casting number.
If you have any questions please call Dynicron Cylinder Head Service and ask for Jason at show contact info
Mon-Fri 8am-5pm PST
do NOT contact me with unsolicited services or offers