Carb Accessories

Pontiac V8 Carb Accessories

The Parts Between the Carb and the Engine — Carb Accessories for Pontiac V8s

Carb accessories are the parts that decide whether a new carburetor actually runs the way it should. A dual feed fuel line, the right studs, a heat spacer and a throttle return spring are not afterthoughts — a starved bowl, a leaking base gasket or a throttle that does not snap shut will ruin a good carburetor's reputation.

Butler stocks Holley and Russell dual inlet fuel line kits, Q-jet and square-bore carb studs from ARP and Butler, flange adapters, heat dissipators, air cleaner spacers, sight plugs, diaphragms and throttle return hardware.

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1 1/4" Aluminum Air Cleaner Spacer w/ O-ring, w/ Recessed Lip RPC-S2014

Standard 4150 bowls	Holley and Russell dual inlet kits fit 4150 carburetors with 7/8-20 threaded bowls, using a 3/8 inch female NPT inlet and -06 AN hose. Russell offers ProFlex stainless braided with a 0-15 psi fuel pressure gauge, or ProClassic nylon fiber braid without one; kits without a gauge include a 1/8 inch pipe plug.
Ultra XP bowls	XP carburetors use -8 O-ring bowls and need their own line. The extra bowl capacity extends the line to 9.75 inches against a standard 9.50 inches — .125 inch per bowl. Butler stocks both the -6 and -8 inlet versions with Pro-Lite 350 hose.
Billet log	a black anodized billet fuel line for 4150 and 4500 models with 7/8-20 threads, -8AN male inlet and a 3/8 inch NPT outlet at the rear of the log.
Two cautions	the Russell dual inlet kits do not fit Holley 4010, 4011 or Summit series carburetors, and any of these kits will require a spacer for use on an Edelbrock Performer intake.

Square-bore studs	ARP's standard carburetor stud kit is 5/16-18/24, 1.700 inch long, set of four, black oxide. Butler's own 1-1/2 inch stud kit includes four studs threaded 5/16-24 at the carb and 5/16-18 at the intake, four washers and four nuts, and is intended for a carburetor and gasket with no spacer — it fits Edelbrock and Holley carburetors, EFI throttle bodies and air valves.
Quadrajet	the Q-jet needs its own lengths. ARP's Quadrajet kit is 5/16 inch in 1.700 and 4.400 inch, set of four, and Butler's stainless eight-piece Q-jet fastener kit uses grade 5 hex head bolts.
Flange adapters	an Edelbrock square-bore to spread-bore adapter plate, .100 inch thick, mounts a square-bore carburetor to the spread-bore pad on an Edelbrock intake — Edelbrock manifolds only, hardware and gaskets included. A FiTech-to-1966-Tri-Power adapter is also stocked, and takes a Holley 2300 as well; the FiTech bolt holes need slight enlarging to match.

Heat dissipator	a 1/2 inch Mr Gasket unit for Holley four-barrel and Ram manifolds, built from heat-absorbing material layered with aluminum alloy. Each gasket and aluminum plate is 1/16 inch thick. It pushes engine heat away from the carburetor for a cooler, denser charge and to keep fuel in the bowls from vapor-locking on a hot shutdown.
Air cleaner spacers	aluminum spacers with a 5.125 inch neck, an O-ring seal on the bottom and a recessed step on top for the air cleaner flange to drop into. Stocked from 1/4 inch up. Critical limit for shaker cars: Butler drop base units only allow up to 7/8 inch, so the taller spacers are not for a car with a shaker.
Throttle return	a Moroso return kit for 4500 series and dual-carb setups, 14-gauge polished chrome steel, with heavy and light stainless spring sets, all mounting hardware and instructions. It clears most air cleaner combinations.
Small stuff that matters	clear bowl sight plugs for setting float level without a mess, a 50cc GFLT secondary diaphragm compatible with alcohol-base fuels, and an injection-molded carb cap for 5-1/8 inch necks to keep dirt out during storage, transport or downtime at the track.

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