Doug's Headers D303Y-R Tri-Y Header, 1-3/4 In 68-87 Chevy Truck, Raw

Name: Doug's Headers D303Y-R Tri-Y Header, 1-3/4 In 68-87 Chevy Truck, Raw
Brand: Dougs Headers
SKU: 447D303YR
Price: 582.99 USD
Availability: InStock

Dougs Headers

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$582.99

set

Factory Shipped

This part will be shipped by the manufacturer. We estimate this item will ship on or before August 22nd.

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Product Summary

396, 402, 454, 283, 400, Tri-Y Header Tube Type, Raw

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Key Specs

MFG. Part #	D303Y-R
Brand	Dougs Headers
Header Tube Type	Tri-Y
Finish	Raw
Material Type	Steel

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Details

Raw Header for Chevy/GMC 2WD & 4WD Trucks & SUV 1/2, 3/4, 1 Ton/ 1500, 2500, 3500 Trucks

Blazer/Jimmy, Suburban, Tahoe/Yukon (68-87) 396-502 Engine
1 Ton/3500 Crew, Standard Cab Dually (73-91) 396-502 Engine
Class A (Chevy Chassis) (75-91) 396-502 Engine

The Dougs Header you have chosen is raw, not Metallic Ceramic Thermal Barrier Coated (MCTBC) which is the standard finish on all Dougs Headers. The picture you see is the same header with MCTBC which protects and extends the life of headers by creating a thermal barrier that significantly lowers underhood temperatures and protects the substrate metal from thermal fatigue. It also provide corrosion resistance to protect it for years to come.

Please see our online catalog for specific application information.

Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.Every Dougs header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Dougs headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

3/8" Thick machined flanges...no warping
CNC mandrel bent tubes... accurate fit & better flow
Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
Heavy 16 gauge tubing...longer life
Tubes are pre-polished to remove scratches and the header is left unfinished (raw steel) for individual customizing

Doug's Headers D303Y-R 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Raw Steel
Tri-Y Design - Raw Steel
Collector: 2 1/2
Port Shape: SAP
Primary Tube: 1 3/4 - 2
legal for off-highway use (exc. in Calif. or states using Calif. emission standards)
Non catalytic converter equipped.
Non catalytic converter equipped
Not with bell housing mounts
Requires Big block frame stands and motor mounts
DUALLY
with A/C
without Catalytic Converter
with Column Shift
with Floor Shifter

Doug's Headers D303Y-R 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Raw Steel
Tri-Y Design - Raw Steel
Collector: 2 1/2
Port Shape: SAP
Primary Tube: 1 3/4 - 2
legal for off-highway use (exc. in Calif. or states using Calif. emission standards)
Non catalytic converter equipped.
Non catalytic converter equipped
Not with bell housing mounts
Requires Big block frame stands and motor mounts
DUALLY
with A/C
without Catalytic Converter
with Column Shift
with Floor Shifter

Application

1968-1969 Chevrolet C10 Suburban 6.5L/396 V8
1970-1972 Chevrolet C10 Suburban 6.6L/402 V8
1975-1980 Chevrolet C10 Suburban 7.4L/454 V8
1968-1969 Chevrolet C20 Suburban 6.5L/396 V8
1976-1980 Chevrolet C20 Suburban 6.6L/400 V8
1970-1972 Chevrolet C20 Suburban 6.6L/402 V8
1975-1986 Chevrolet C20 Suburban 7.4L/454 V8
1988-1991 Chevrolet C3500 7.4L/454 V8
1968-1969 Chevrolet K10 Suburban 6.5L/396 V8
1970-1972 Chevrolet K10 Suburban 6.6L/402 V8
1988-1991 Chevrolet K3500 7.4L/454 V8
1987 Chevrolet R20 Suburban 7.4L/454 V8
1989-1991 Chevrolet R3500 7.4L/454 V8
1989-1991 Chevrolet V3500 7.4L/454 V8
1975-1978 GMC C15 Suburban 7.4L/454 V8
1968-1969 GMC C15/C1500 Pickup 6.5L/396 V8
1970-1972 GMC C15/C1500 Pickup 6.6L/402 V8
1968-1969 GMC C15/C1500 Suburban 6.5L/396 V8
1970-1971 GMC C15/C1500 Suburban 6.6L/402 V8
1979-1980 GMC C1500 Suburban 7.4L/454 V8
1979-1980 GMC C1500 6.6L/400 V8
1979-1980 GMC C1500 7.4L/454 V8
1978 GMC C25 Suburban 6.6L/400 V8
1975-1978 GMC C25 Suburban 7.4L/454 V8
1968-1969 GMC C25/C2500 Pickup 6.5L/396 V8
1970-1972 GMC C25/C2500 Pickup 6.6L/402 V8
1968-1969 GMC C25/C2500 Suburban 6.5L/396 V8
1970-1972 GMC C25/C2500 Suburban 6.6L/402 V8
1980 GMC C2500 Suburban 6.6L/400 V8
1979-1986 GMC C2500 Suburban 7.4L/454 V8
1979 GMC C2500 6.6L/400 V8
1979-1986 GMC C2500 7.4L/454 V8
1968-1969 GMC C35/C3500 Pickup 6.5L/396 V8
1970-1972 GMC C35/C3500 Pickup 6.6L/402 V8
1979 GMC C3500 6.6L/400 V8
1979-1991 GMC C3500 7.4L/454 V8
1975-1979 GMC Jimmy 6.6L/400 V8
1976 GMC Jimmy 7.4L/454 V8
1968-1969 GMC K15/K1500 Pickup 6.5L/396 V8
1968 GMC K15/K1500 Suburban 6.5L/396 V8
1970-1972 GMC K15/K1500 Suburban 6.6L/402 V8
1974 GMC K15/K1500 Suburban 7.4L/454 V8
1979-1980 GMC K1500 Suburban 6.6L/400 V8
1979-1980 GMC K1500 6.6L/400 V8
1979-1980 GMC K1500 7.4L/454 V8
1968-1969 GMC K25/K2500 Pickup 6.5L/396 V8
1968 GMC K25/K2500 Suburban 6.5L/396 V8
1974 GMC K25/K2500 Suburban 7.4L/454 V8
1979-1980 GMC K2500 Suburban 6.6L/400 V8
1979-1980 GMC K2500 6.6L/400 V8
1968-1969 GMC K35/K3500 Pickup 6.5L/396 V8
1970-1971 GMC K35/K3500 Pickup 6.6L/402 V8
1979-1980 GMC K3500 6.6L/400 V8
1979-1991 GMC K3500 7.4L/454 V8
1987 GMC R2500 Suburban 7.4L/454 V8
1987 GMC R2500 7.4L/454 V8
1987-1991 GMC R3500 7.4L/454 V8
1987-1991 GMC V3500 7.4L/454 V8

Guides & Documents

Choosing the Right Headers

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

Specifications

KEY SPECS
MFG. Part #	D303Y-R
Brand	Dougs Headers
Header Tube Type	Tri-Y
Finish	Raw
Material Type	Steel

GENERAL
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Color	Natural
Weld-Up	No
Collector Diameter	2-1/2 Inch
Hardware Included	Yes
Gasket(s) Included	Yes
Sold in Quantity	Pair
GTIN Code	694342506995