AFR 2015 BBC 377/121CC .725/.850 COMPLETE WITH HYDRAULIC OR SOLID ROLLER SPRINGS

Regular price $ 3,641.85

CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

Best suited for +540 cubic inch large displacement big block chevy racing engines, operating at or below 7600 RPM. Our 37cc cylinder heads feature fully CNC machined intake runners, exhaust ports and combustion chambers.  Equipped with Titanium retainers and high quality components, these heads are capable of flowing 437 CFM at 0.900" of lift.

377cc Aluminum BBC Cylinder Heads
Part # Description Combustion Chamber
2015-TI Fully CNC Ported 121cc

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377cc BBC
  .200 .300 .400 .500 .600 .700 .800 .900
Int 176 260 328 382 415 427 434 437
Exh 148 205 263 302 316 330 340 345

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.600", 3/4" radius plate exhaust, 2 1/8" curved pipe

Included Components
Competition 5-angle Valve Job
100% CNC Ported Chambers, Exhaust, and Intake
11/32" Intake Valve, 2.300" x5.500" O.A.L
7626
11/32" Tulip Exhaust Valve, 1.880" x 5.450" O.A.L
7631
PAC Racing Spring #1224 1.625 O.D. Solid Roller, 275lbs on seat, .850 Maximum Lift, Max RPM 7400-7600
8031
10° Titanium Retainer 1.500" O.D x 1.180" I.D x .765" I.D
8507
10° 11/32" Valve Locks with lashcap recess
9005
ARP 7/16" Rocker Exhaust Studs
6406
ARP 7/16" Rocker Intake Studs
6407
Adjustable 3/8" Guide Plates
6109
11/32" Viton Valve Seals
AFR #6613
Hardened Spring Cup 1.740" O.D / 1.650" I.D
8046
Intake Valve Seats 2.450" O.D x 2.000" I.D x .375" Deep
9065
Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep
9064
11/32" Intake Bronze Valve Guides .502" O.D x 2.10" O.A.L
AFR #9041
11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L
AFR #9042
Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
377cc
Intake Port Dimension
2.450" H x 1.755" W x 13/32° Radius
Intake Port Location
Stock
Exhaust Port Volume
135cc
Exhaust Port Dimension
1.780"H x 2.025" W
Exhaust Port Location
.375" Raised
Combustion Chamber Size(Full CNC)
121cc
Valve Cover Bolt Pattern
Perimeter Bolt
Valve Angle
24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter
1.725" O.D
Max Valve Spring Pocket Machining
1.750" O.D
Deck Thickness
.750"
Minimum Bore Diameter
4.250"
Flat Mill
.006" per cc/ Maximum 114cc
Angle Mill
.009" per cc/Maximum 104cc
Note:Angle mills might require a .120" Thick intake gasket.
Minimum Cross Sectional Area
3.860 sq. in.
Spark Plug Dimensions
14mm x .750" w/Gasket Seat

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CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.

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Warning: May cause cancer and reproductive harm.