Product Summary

Long Tube Header Tube Type, Oval Exhaust Port Shape

  • Elite Hedders
  • 1-5/8 In. Tube Dia.
  • 3 In. Coll.
  • Full Length Design
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Key Specs

MFG. Part #68448
Header Tube TypeLong Tube
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
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Need To Know

Made to Order

This custom item will ship when completed

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Hedman Hedders 68448 Details

Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing Headers for Chevy Corvettes for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

This set is part of Hedman's ELITE line of headers. Hedman ELITE headers have a heavy-duty design that uses stout 3/8" flanges, and thicker 14 gauge primary tubes. The heavier-duty construction of HEDMAN ELITE Hedders makes them ideal for high-performance engines and tow vehicles, both of which produce higher exhaust temperatures.

ELITE models have a MATTE-SILVER ceramic finish that can withstand temperatures up to 1400 degrees F. The coating looks great and keeps more heat in the tubes. This results in faster exhaust speeds for improved exhaust scavenging, and reduced underhood temperatures.

These LONG-TUBE headers fit 1984-1991 Chevy Corvettes powered by a SB Chevy (Gen 1) engine. The smooth 1-5/8 in tube design provides ample exhaust flow to let your Vette's 283-400 SB Chevy engine breathe easy, and produce maximum horsepower and torque.

Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty. The ceramic-metallic finish is covered by a 5-year factory warranty, in addition to Hedman's standard lifetime header warranty.

Features

  • Elite Hedders
  • 1-5/8 In. Tube Dia.
  • 3 In. Coll.
  • Full Length Design

Application

  • 1988 Chevrolet Corvette 35th Anniversary Edition CID 350 Naturally Aspirated GAS
  • 1984-1987 Chevrolet Corvette Base CID 350 Naturally Aspirated GAS
  • 1989-1990 Chevrolet Corvette Base CID 350 Naturally Aspirated GAS

Specs

Manufacturer Specs:

TUBE DIAMETER1-5/8 in.
TUBE STYLELong Tubes
AIR CONDITIONINGYes
AUTOMATIC TRANSMISSION - COLUMNNo
AUTOMATIC TRANSMISSION - FLOORYes
MANUAL TRANSMISSION - COLUMNNo
MANUAL TRANSMISSION - FLOORYes
POWER STEERINGYes
COLLECTOR ATTACHMENT3 in.
COLLECTOR DIAMETER3 in.
COLLECTOR SIZE3 in.
COLLECTOR STYLEBALL and SOCKET Style (Gasketless)
REDUCER OUTLET SIZE2-1/2 in.
EXHAUST SYSTEM DIA2-1/2 in.
CONTENTSHeader(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions
FINISHMatte Silver Ceramic-Metallic
FINISH TYPEMATTE SILVER Ceramic-metallic coated
FLANGE STYLEStandard
FLANGE THICKNESS0.375 in.
HEADER STYLELong Tube
NOTES84-91 Chevrolet Corvette 283-400
MATERIALMild Steel
TUBE DESIGNStandard
TUBE LENGTHLong Tubes
TUBE MATERIAL THICKNESS14g
TUBE SIZE1-5/8 in.
WITH AIR SYSTEMNo
WITH EGRNo
EONo
WELD-UPNo
TUNEDNo
BOLTS/STUDS INCLUDEDYes
CATALYTIC CONVERTERS INCLUDEDNo
CROSSOVER PIPE INCLUDEDNo
GASKET OR SEAL INCLUDEDYes
HEADER FASTENERS INCLUDEDYes
INSTALLATION HARDWARE INCLUDEDYes
MOTOR MOUNTS INCLUDEDNo
MOUNTING HARDWARE INCLUDEDYes
REDUCERS INCLUDEDYes
Y-PIPE INCLUDEDNo
QUANTITYSold as a pair.
PRIMARY TUBE GAUGE14g
PRIMARY TUBE DIAMETER IN1.625 in.
PACKAGE CONTENTSHeaders, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
HEADER MATERIALMild Steel
HEADER FINISHMatte Silver Ceramic-Metallic
CYLINDER HEAD PORT SHAPEOval
CYLINDER HEADStock Profile Heads
HEADER CONSTRUCTIONMILD STEEL- ELITE Heavy-Duty
REPLACEMENT GASKET41827470
REPLACEMENT HEAD FLANGE GASKET41827470
HEADER PORT SHAPEOval Port
PORT SHAPEOval
COLLECTOR BOLTS INCLUDEDYes
AIR CONDITIONING NOTESNon-EGR

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or 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.

Hedman Hedders 68448 Specifications

KEY SPECS
MFG. Part #68448
BrandHedman Hedders
Header Tube TypeLong Tube
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeMild Steel
ColorSilver
Weld-UpNo
Collector Diameter3 Inch
FinishMatte
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedYes
Collector Reducer Exit Diameter2.5"
GENERAL
Sold in QuantitySet
Collector Length3"
Flange Thickness0.375"
TunedNo
Crossover Pipe IncludedNo
Primary Tube Gauge14-gauge

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