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home > CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW > CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW
CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW
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CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW
CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW
CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW
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CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEWCNC PORTED Brand new LS3 821 rectangle port LS heads from Chevrolet Performance including valves and valve springs. These are the best factory head that GM offer. Being an LS3 head they have the desired light weight sodium filled inlet valves. Will fit LS2, L98, L77, L76, LS3, LSA Aluminium performance head Fits any LS family engine with 4. 00" bore or larger 2. 165" hollow stem intake, and 1. 59" solid stem exhaust valves . 550" max valve lift (stock
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CNC PORTED

Brand new LS3 821 rectangle port LS heads from Chevrolet Performance including valves and valve springs. 

These are the best factory head that GM offer. Being an LS3 head they have the desired light weight sodium filled inlet valves.

Will fit LS2, L98, L77, L76, LS3, LSA

Aluminium performance head

  • Fits any LS family engine with 4.00" bore or larger
  • 2.165" hollow stem intake, and 1.59" solid stem exhaust valves
  • .550" max valve lift (stock springs)
  • As-cast L92 style 260cc intake ports
  • D-shaped exhaust ports
  • As-cast combustion chambers

Head 12615879 is assembled with the following components:

  • 12569427 Sodium Filled Intake Valves
  • 10166344 Valve Spring Retainers
  • 12582719 Exhaust Valves
  • 12482063 Intake Valve Stem Seals
  • 12625033 Valve Springs
  • 12482062 Exhaust Valve Stem Seals
  • 10166345 Valve Locks

 

 LIFT  EXHAUST* INLET**
.100 49.3 72.5
.200 102.6 148.2
.300 148.6 221.0
.400 184.8 268.2
.500 206.3 307.6
.550 210.0 322.6
.600 212.7 330.5
.650 214.6 334.3

 

* L98 6.0L CNC ported exhaust, 4.040 bore, 1.59 valve, 0821 casting, no pipe.

** L98 6.0L CNC ported inlet, 4.040 bore, 2.16 valve , 0821 casting, venturi.

CNC PORTED 821 GM LS Rectangle Port Heads (Pair) NEW

Item no : 47060243385
sold recently : Login >>
US$ 1475.00
Pay in 4 interest-free payments of $368.75 Learn more
Min. order: 1piece

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 1 - Jul 6

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US$ 1475.00

1-11

US$ 1327.50

12-35

US$ 1032.50

36-59

US$ 885.00

60+

US$40

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
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Exchange/Return Notes
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