SKU: AD-VB-8G-61
VB8G-61 Hilborn 8 Stack - Barrel (Metering) Valve Bottom or side mount

Alkydigger producesd in USA   

Bottom Mount or Side Mount   8 cylinder Metering Valve- Rear and Front hose positions- 61 SPOOL REPLACES THE OLD 56 HILBORN SPOOL  

THIS VALVE HAS A 61 SPOOL   -- LARGE V8'S OVER   550 CU IN AND MODERATE BLOWN ENGINES UNDER 20 LBS BOOST APPROX. 

  54 IS  MOST COMMON SPOOL COMPARES TO A 21 ENGLER SPOOL  

305 to 500 engine on methanol or Gas .    

Also used to upgrade older Enderle Manifolds- 

Order F597 Plate to make this externally  removable  

Does not come with AD-101 Arm  order it additional .

This valve coordinates the fuel with the butterflies, which controls the air to the engine. 

It consists of an anodized aluminum block, a metering rotor, a secondary outlet, and nozzle hose outlets. 

The metering rotor is selected to serve a wide range of engine sizes and fuel requirements, making it unnecessary to change rotor sizes when cubic inches change.

• 8 cylinder, bottom mount assembly
• #54 rotor spool-  preferred  for  All Sprint cars , and street engines,  up to 1000  hp 
• #77 Spool for Race Savers  has reported super clean  results off the turns. 
• #58 spool if your engine is over 600 cu in unblown on Alky.  or Blown can use a 61 or 58 spool   Spool 
• 61 SPOOL TAKES THE PLACE OF THE OLD 56 SPOOL FOR OVER 550 CU IN UNBLOWN AND SMALL BLOWN ENGINES 
• 57 SPOOL IS FOR GAS  ON V8'S UNBLOWN AND FOR SMALL 1  2  4  CYL ENGINES UNDER 250 HP  
• hoses come out the narrow end

VB-8G     VB8G    VB8-G     8G   AD-8G