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Manley Valves
Buick V-6

Stage 1 & Production Cast Iron Heads
Severe Duty Valves
  • XH-428 Exhaust Material
  • NK-844 Intake Material
  • Chrome Stems and Hard Tips
  • Swirl Polished and Machined
  • Intakes are "Pro Flow" for improved flow
Part # Type Head
Diam.
Stem
Diam.
Installed
Height
O/A
Length
Price/
Set
Order
Online
11503-6 EXH 1.500 .3415 stock 4.725 $122 order here
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11502-6 INT 1.710 .3415 stock 4.730 $122 order here
11504-6 INT 1.775 .3415 stock 4.730 $122 order here
 
 
 
 
 
 
 
 
 
 
 
 

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