Page 208 - 2021-22_EngineCatalogAP

CYLINDER HEADS
BRO2021012
BB-2/BB2 Plus/BB-2 XTRA Aluminum Head
The BB-2 head is recommended for use on 427-509 engines with a minimum of 12:1 com- pression. It features ductile iron valve seats, bronze valve guides and accepts standard valve train components. Sold individually.
BB-2X Aluminum Head
The BB-2X has a larger intake runner than the above BB-2 and is ideal for very large dis- placement (482-522) engines. Accepts standard valve train components and uses a .250" longer intake valve with titanium retainers. Sold individually.
BB-3X Aluminum Head
The BB-3X Head features a valve angle that is rolled 2° from stock, with newly designed intake and exhaust ports. Most standard valve train components can be used. Sold individ- ually.
BB-3 XTRA 345 Aluminum Heads
The Brodix BB-3 XTRA has taken the conventional big block head to the next level with a rolled 24° valve angle to increase port velocity, propelling the BB-3 XTRA to the top of its class. The BBC-3 XTRA includes CNC-machined 119cc combustion chambers, bowls, and ports; 24° valve angle, raised V/C rail, phosphorous-bronze valve guides, and ductile iron valve seats for unleaded fuels with competition valve job. Sold individually.
Race-Rite Aluminum Heads
BRO2060001
Part No.
Description
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
BRO2020001
BB-2 PLUS 312, Bare Head
312cc
119cc
Rect.
26°/17°
2.250"
1.880"
BRO2021012
Assembled BB-2 PLUS 312, 1.550" Springs
312cc
119cc
Rect.
26°/17°
2.250"
1.880"
BRO2021024
BB-2 XTRA 365, Assembled, 1.550" Spring, 240 lbs. Seat Pressure
365cc
119cc
Rect.
26°/17°
2.300"
1.880"
Part No.
Description
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
BRO2021038
Assembled BB2X, 1.625" Dual Spring
340cc
119cc
Rect.
26°/17°
2.300"
1.880"
Part No.
Description
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
BRO2038101
BB-3X Assembled, CNC-Ported With 1.645" Springs
366cc
119cc
Rect.
24°/15°
2.300"
1.880"
Part No.
Description
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
BRO2031016
Assembled, 1.645" Spring,
315 lbs. Seat Pressure, Titanium Retainers
345cc
119cc
Rect
24°/15°
2.300"
1.880"
Brodix Race-Rite cylinder heads are the most user-friendly aluminum heads, bolting
directly in place of stock cast iron heads to produce an additional 90 HP and allowing
reuse of the intake manifold and pistons. Exhaust ports in the stock location eliminate
header or manifold interference. Features include virgin A-356 aluminum, high-torque intake
ports, 119cc combustion chambers, phosphorous-bronze valve guides, ductile iron valve seats for unleaded fuels with competition valve job, and bulletproof rocker stands. Sold individually.
Part No.
Description
Intake Runner
Comb. Chamber
Port Type
Valve Angle
Intake Valve
Exhaust Valve
BRO2060001
Rectangle Port, Bare Head
294cc
119cc
Rect
26°/17°
2.250"
1.880"
BRO2061000
Oval Port, Assembled,
1.550" Springs, 150 lbs. Seat Pressure
270cc
119cc
Oval
26°/26°
2.250"
1.880"
BRO2061001
Oval Port, Assembled,
1.550" Spring, 240 lbs. Seat Pressure
270cc
119cc
Oval
26°/17°
2.250"
1.880"
BRO2061009
Rectangle Port, Assembled, 1.550" Spring, 140 lbs. Seat Pressure
294cc
119cc
Rect
26°/17°
2.250"
1.880"
206 2021-22 ENGINE BUILDER CATALOG
CHEVROLET BIG BLOCK