| Air Conditioning |
Yes, Yes, Yes |
| Application |
Automotive |
| Automatic Transmission - Column |
No, No, No |
| Automatic Transmission - Floor |
Yes, Yes, Yes |
| Bolts/Studs Included |
Yes, Yes, Yes |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Catalytic Converter(s) Included |
NO, No, No |
| Coating/Finish |
Black Ceramic |
| Collector Attachment |
3", 3 in., 3 in. |
| Collector Diameter |
3 in., 3 in. |
| Collector Size |
3", 3 in., 3 in. |
| Collector Style |
Ball and Socket Style (Gasketless), BALL and SOCKET Style (Gasketless), BALL and SOCKET Style (Gasketless) |
| Collector Tube Size (in.) |
3 |
| Contents |
headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware, headers, gaskets (when applicable), 3-bolt exhaust adapters, hardware, One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware |
| Country of Origin (Primary) |
US |
| Crossover Pipe Included |
NO, No, No |
| Cylinder Head |
Stock Profile Heads, Stock Profile Heads, Stock Profile Heads |
| Cylinder Head Port Shape |
Oval, Oval, Oval |
| E.O. # |
Yes, Yes, Yes |
| Emission Code |
Legal US |
| Emissions Notes |
EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website), EO# D167-33 (click here for covered vehicles in document on ARB.CA.GOV website) |
| Engine Make/Size |
Chevy Big Block (396-502) |
| Exhaust System Dia |
2-1/2", 2-1/2 in., 2-1/2 in. |
| Finish |
Matte Silver Ceramic-Metallic, Matte Silver Ceramic-Metallic |
| Finish Type |
MATTE SILVER Ceramic-metallic coated, MATTE SILVER Ceramic-metallic coated, MATTE SILVER Ceramic-metallic coated |
| Flange Style |
Standard, Standard, Standard |
| Flange Thickness |
0.375", 0.375 in., 0.375 in. |
| Gasket # |
27550 |
| Gasket Or Seal Included |
Yes, Yes, Yes |
| Harmonized Tariff Code (Schedule B) |
8708925000 |
| Hazardous Material Code |
N |
| Head Flange Gasket |
27550 |
| Header Construction |
ELITE Heavy-Duty, MILD STEEL- ELITE Heavy-Duty, MILD STEEL- ELITE Heavy-Duty |
| Header Fasteners Included |
Yes, Yes |
| Header Finish |
HTC Polished Silver Ceramic-Metallic, Matte Silver Ceramic-Metallic, Matte Silver Ceramic-Metallic |
| Header Material |
Mild Steel, Mild Steel, Mild Steel |
| Header Style |
Mid-Length Tube, Mid-Length Tube |
| Installation Hardware Included |
Yes, Yes, Yes |
| Key Feature |
With A.I.R., With A.I.R., With A.I.R. |
| Life Cycle Status Code |
Available to Order |
| Manual Transmission - Column |
No, No, No |
| Manual Transmission - Floor |
No, No, No |
| Material |
Mild Steel, Mild Steel |
| Motor Mounts (Included) |
NO, No |
| Motor Mounts Included |
NO, No, No |
| Mounting Hardware Included |
Yes, Yes, Yes |
| NAFTA Preference Criterion Code |
B |
| Notes |
67-81 Various Chevy Car 396-502, 67-81 Various Chevy Car 396-502, 67-81 Various Chevy Car 396-502 |
| Package Contents |
One pair of headers, head flange gaskets, collector flange gaskets (when applicable), 3-bolt exhaust adapters, mounting hardware, Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware, Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware |
| Port Shape |
N/A |
| Power Steering |
Yes, Yes, Yes |
| Primary Tube Diameter (in) |
1.75", 1.75 in., 1.75 in. |
| Primary Tube Gauge |
18g, 14g, 14g |
| Quantity |
Sold as a pair., Sold as a pair., Sold as a pair. |
| Reducer Outlet Size |
2-1/2", 2-1/2 in., 2-1/2 in. |
| Reducers Included |
Yes, Yes, Yes |
| Replacement Gasket |
27550, 27550, 27550 |
| Replacement Head Flange Gasket |
27550, 27550 |
| SDR Required Flag |
N |
| Transmission Mount Included |
NO |
| Transmission Mount/Crossmember (Included) |
No, No |
| Transmission Mount/Crossmember Included |
No |
| Tube Design |
MID-LENGTH, MID-LENGTH, Standard |
| Tube Diameter |
1-3/4 in., 1-3/4" |
| Tube Direction |
Down Swept |
| Tube Length |
Mid-Length Tubes, Mid-Length Tubes, Mid-Length Tubes |
| Tube Material Thickness |
18g, 14g, 14g |
| Tube Size |
1-3/4", 1-3/4 in., 1-3/4 in. |
| Tube Style |
Mid-Length Tubes, Mid-Length, Mid-Length, Mid-Length |
| Tuned |
NO, No, No |
| Variations |
66611, 61618, 66611, 61618, 66611, 61618 |
| Weld-Up |
No, No, No |
| with A.I.R. |
No |
| with A.I.R. System |
Yes, Yes, Yes |
| with EGR |
No, No, No |
| Y-Pipe Included |
No, No, No |
| GTIN |
00732611616188 |
