180cc LT1 Eliminator Street Aluminum Cylinder Heads SB-Chevy

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AFR - AIRFLOW RESEARCHPART NUMBER: 033-908

180cc LT1 Eliminator Street Aluminum Cylinder Heads SB-Chevy

Name: 180cc LT1 Eliminator Street Aluminum Cylinder Heads SB-Chevy
Brand: AFR - AIRFLOW RESEARCH
SKU: 033-908
Price: 2249.10 USD
Availability: InStock

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Ships on 10/14/2026

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SB-Chevy
65cc Combustion Chambers
180cc Intake Port
64cc Exhaust Port
Angle Plug
Assembled
CARB OE #D-250-2

Sold in Pairs

Small Block Chevy 180cc LT1 Eliminator Basic Package Components

100% CNC Ported Combustion Chambers

100% CNC Ported Exhaust Ports

100% CNC Ported Intake Ports

Competition 5-Angle Valve Job

Intake Valve, 2.020' x 4.903' o.a.l.

Exhaust Valve, 1.600' x 4.955' o.a.l.

1.290' OD Hydraulic Roller Dual Valve Spring, 135 lbs. on seat, .600' maximum lift, max RPM 6300-6500

7º Titanium Retainers

7º Valve Locks

3/8' Rocker Studs

Adjustable 5/16' Guide Plates

Viton Valve Seals

Hardened Spring Cups

Intake Valve Seats

Exhaust Valve Seats

Bronze Valve Guides

Small Block Chevy 180cc LT1 Eliminator Street Head Specifications

Head Torque w/Moly Lube

65-70 Ft. Lbs.

Rocker Stud Torque

55 Ft. Lbs.

Intake Port Gasket

Fel-Pro 375-1284 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.

Exhaust Port Gasket

Fel Pro 375-1404

Head Gasket

350ci Fel Pro 375-1074

Head Bolts & Studs

Standard ARP

Head Bolt Washers

Manley Standard

Stud Girdle

Standard GM L98

Suggested Manifold

GM LT1

Spark Plug Starting Range

AC FR3LS or 41629

Combustion Chambers

65cc

Spring Pocket can be cut to 1.625, no deeper.

Valve Spacing

Standard GM L98

Rocker Arms

Standard GM L98

Valve Angle

23°

Angle Mill

.008' per cc

Flat Mill

.006' per cc

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

The Small Port, High Velocity, Torque Monster!

The AFR Emissions Legal (CARB EO #D-250-2 for engines up to 1994), 180cc intake port LT1 Small Block Chevy cylinder heads are available in the LT1 angle plug version only. These heads have several combustion chamber options with a 64cc exhaust port and a 3/4" thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm diameter stem, 2.020'' intake and 1.600'' exhaust with AFR's hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of idle to 6000 rpm (higher rpm ranges possible depending on combination of parts), 23° valve angle, and standard valve spacing make this the perfect street cylinder head for 350-383ci performance engines and is specifically designed for 1992-95 Corvettes and 1993-97 Camaros. No special parts are required (see footnotes here). Dual valve cover bolt pattern is standard. Exhaust port and bolt pattern are raised 3/32" over GM L98 cylinder heads, this rarely affects header or chassis fitment. .

Installation Note: Hydraulic roller cams typically experience valve float at 6200-6400 rpm because of their fast ramp rates. AFR suggest you upgrade your springs to AFR part number 033-8605, 1.270'' O.D. with higher spring pressures and use our Patented ''Hydra Rev Kit'' to reduce chances of valve float associated with rpm 6200 or higher.

180cc LT1 Eliminator Street Cylinder Head Features:

100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
180cc Intake Ports
64cc Exhaust Ports
Bead Lock Intake Valve, 2.020'' x 4.903'' Overall Valve Length
Bead Lock Exhaust Valve, 1.600'' x 4.955'' Overall Valve Length
PAC Racing Valve Spring: 1.290'' OD Hydraulic Roller Dual Valve Spring, 135 lbs on seat, .600'' maximum lift
7° Titanium Retainers
7° Bead Lock Valve Keepers
3/8'' Rocker Studs (if using non-self aligning rockers)
Adjustable 5/16'' Guide Plates
Viton Valve Seals
Hardened Spring Cup
Intake Valve Seats
Exhaust Valve Seats
Bronze Valve Guides
Standard Exhaust Bolt Pattern, Accepts Factory and Aftermarket Headers