CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
Our largest and best flowing big block chevy cylinders heads, these cylinder heads feature 100% CNC machined intake runners, exhaust ports and combustion chambers. Best suited for +540 cubic inch large displacement racing engines, operating at or below 7600 RPM. Equipped with Titantium retainers and high quality components, these heads are capable of flowing 456 CFM at 0.900" of lift.
| 385cc Aluminum BBC Cylinder Heads | ||
|---|---|---|
| Part # | Description | Combustion Chamber |
| 2020-TI | Fully CNC Ported | 121cc |
Click part # to add product to your cart
| 385cc BBC | ||||||||
| .200 | .300 | .400 | .500 | .600 | .700 | .800 | .900 | |
| Int | 176 | 256 | 327 | 386 | 421 | 444 | 452 | 456 |
| Exh | 149 | 205 | 267 | 302 | 322 | 334 | 344 | 350 |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.600", 3/4" radius plate exhaust, 2 1/8" curved pipe
| Basic Package Components | |
| 100% CNC Ported Intake Ports, Exhaust Ports, & Combustion Chamber | |
| Competition 5-angle Valve Job | |
| 11/32" Intake Valve, 2.350" x 5.500" O.A.L |
7627
|
| 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
|
| Recommended Components: | |
| Intake Port Gasket |
6854 (.120" Thick)
|
| Intake Port Gasket |
6856 (.060" Thick)
|
| Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads. | |
| Exhaust Port Gasket |
6858
|
| Head Gasket, Fel-Pro #1047 (Mark V and VI) |
6849
|
| Head Gasket,, Fel-Pro #1017-1 (Mark IV) |
6850
|
| Head Bolts, ARP 135-3703 (Mark IV) |
6306
|
| Head Bolts, ARP 135-3707 (Mark V) |
6308
|
| Head Studs, ARP 235-4713 |
6307
|
| Head Bolt Washers, Manley |
6320
|
| Stud Girdle, (AFR Specific) |
6202
|
| 7/16 Stud Mount Rocker Arms - 1.7 Ratio (For Optimized Geometry) |
6043
|
| 1.7 Shaft Mount Rocker Arms T&D |
6065
|
| Suggested Manifold |
Victor Jr
|
| Suggested Manifold |
Super Victor
|
| Spark Plug Starting Range |
Autolite 3932
|
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
385cc
|
| Intake Port Dimension |
2.565"H x 1.810"W x 15/32 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 |
3.890 sq. in.
|
| Spark Plug Dimensions |
14mm x .750" w/Gasket Seat
|
SHIPS IN THE LOWER 48 STATES FREE!
CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
CONTACT US THE PRICE IS NEGOTIABLE BEST OFFER
Warning: May cause cancer and reproductive harm.
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