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This 1" Phenolic adapter allows the Holley 2BBL carb #R4412 to be installed on a stock GM 2 bbl intake manifold
The factory Ford chassis mount features a 16mm hole while using a 14mm bolt
but has been designed to work with our RPM cylinder heads #60519 for optimal performance
In addition to PROFORM's LS Slant-Edge valve covers
but is also available with bright chrome on T-304 stainless steel or carbon fiber tips
BILLET 105mm LS Throttle Body w/straight bore 1999 Pontiac Firebird This 1" Phenolic adapter allowsHolley's BILLET LS Throttle Bodies are the BIGGEST BORE MOST FEATURE LOADED available. Holley went back to the drawing board and built the ultimate air valve for your LS engine! This all new design boasts a huge 105 millimeter bore for when WOT is all that matters. Innovative features like Idle Bleed Adjustment, TPS CLOCKER, and closable PCV Passage Valve, make them the ultimate throttle bodies for ease of installation and tuning. Regardless of
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