Holley Adjustable Inlet Needle & Seat - Viton HO6-506 Wheel Nuts 525" Lobe separation angle 110°

525" Lobe separation angle 110°

For those who want an in-tank

and standard valve spacing make this the perfect street aluminum cylinder head for 327 cid to 350 cid engines from 1955-86

9"" Air Cleaner Flat Base in chrome

Holley Adjustable Inlet Needle & Seat - Viton HO6-506 Wheel Nuts 525" Lobe separation angle 110°Holley Adjustable Inlet Needle & Seat VitonSize 0. 097" (Each) HO6 506 6 506 Most Holley performance carburettors come equipped with a Viton tipped needle. The Viton needle design is resistant to dirt and conforms nicely to the shape of the seat for superior sealing. For this reason it is not recommended to use a steel or titanium needle, except for racing.