AFR's 190cc Vortec Street heads are the preferred choice over reworked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines from 350-383 cubic inches, operating up to 6000 RPM. Not compatible with self-aligning rocker arms.
| Included Components | |
| 100% CNC Ported Combustion Chambers | |
| 90% CNC Ported Exhaust Ports | |
| 100% CNC Ported Intake Ports | |
|
Competition 5-angle Valve Job |
|
| 8mm Bead Lock Intake Valve, 2.020" x 4.900" Overall Valve Length | |
| 8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length | |
|
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500, less than 235* duration, upgraded spring #8019 recommended for higher RPM & larger cams |
|
| 7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D | |
| 7° Bead Lock Valve Keepers | |
| ARP 3/8" Rocker Studs | |
| Adjustable 5/16" Guide Plates | |
| Viton Valve Seals .600" O.D x .495" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| Ductile Iron Intake Valve Seats 2.200" O.D x 1.750" I.D x .375" Deep | |
| Ductile Iron Exhaust Valve Seats 1.696" O.D x 1.325" I.D x .305" Deep | |
| 8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L | |
| 190cc Street Head Flow Chart | |||||
| .200 | .300 | .400 | .500 | .550 | |
| Int | 135 | 213 | 253 | 276 | 279 |
| Exh | 110 | 158 | 190 | 207 | 211 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe
AFR's 190cc Vortec Street heads are the preferred choice over reworked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines from 350-383 cubic inches, operating up to 6000 RPM. Not compatible with self-aligning rocker arms.
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
190cc
|
| Intake Port Dimension |
2.320" H x 1.297" W x 3/8° Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
64cc
|
| Exhaust Port Dimension |
1.450" H x 1.550" W
|
| Exhaust Port Location |
.100" Raised
|
| Combustion Chamber Size |
65cc
|
| Valve Cover Bolt Pattern |
Center & Perimeter Bolt
|
| Valve Angle |
23°
|
| Valve Spring Pocket Diameter |
1.460" O.D
|
| Max Valve Spring Pocket Machining |
1.750" O.D
|
| Warning: Do not machine spring pad any deeper. | |
| Deck Thickness |
.750"
|
| Minimum Bore Diameter |
4.000"
|
| Flat Mill |
.006" per cc 60cc Maximum
|
| Angle Mill |
.009" per cc 55cc Maximum
|
| Note: Angle mills might require .120" Thick intake gasket. | |
| Minimum Cross Sectional Area |
2.070 sq. in.
|
| Spark Plug Dimensions |
14mm x .750" w/Gasket Seat
|
| CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING. | |
|
Recommended Components: |
|
| Intake Port Gasket |
GM Vortec or Fel-Pro #12895 (.120 Thick)
|
| Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes. | |
| Exhaust Port Gasket | |
| Head Gasket, 350cid Fel-Pro #1003 | |
| SB Chevy Head Bolt Kit, ARP #134-3701 | |
| SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301 | |
| Head Bolt Washers, Manley | |
| AFR Stud Girdle | |
| Suggested Manifold |
GM or Aftermarket Vortec
|
| Spark Plug Starting Range |
Autolite 3924
|
| Sku | Description | Qty |
|---|---|---|
| 7250-8 | (Set of 8) AFR 7250 - SBC/SBF 8mm Exhaust Valve 1.600 x 4.950 OAL | 1 |
| 8017-16 | (Set of 16) AFR 8017 - 1.290" OD Hydraulic Roller | 1 |
| 9007-16 | (Set of 16) AFR 9007 - 7 Degree Valve Lock 8mm | 1 |
| 6103-8 | (Set of 8) AFR 6103 - SBC/SBF Adjustable Guide Plate | 1 |
| 6612-16 | (Set of 16) AFR 6612-16 - SBC, SBF, LS1 Valve Seal | 1 |
| 9060 | AFR 9060 - SBC/LSx Intake Seat 2.200 OD | 8 |
| 9070 | AFR 9070 - SBC Exhaust Seat 1.675 OD | 8 |
| 9051-16 | (Set of 16) AFR 9051 - LSX/SBF/SBC Bronze Guide | 1 |
You’ll be first to know about Air Flow Research products, discounts and special events!
