Home / Shop / Flowmaster American Thunder Exhaust Systems for 1963 1000 SERIES, 1963-1966 C10 PICKUP - 817937 System, Thunder, Header-Back, 409 Stainless Steel, 1963-66 Chevy/GMC, C10, Long and Short Bed, Straight /Side/Down Outlets, Kit

Flowmaster American Thunder Exhaust Systems for 1963 1000 SERIES, 1963-1966 C10 PICKUP - 817937 System, Thunder, Header-Back, 409 Stainless Steel, 1963-66 Chevy/GMC, C10, Long and Short Bed, Straight /Side/Down Outlets, Kit

SKU: FLO817937

Exhaust Systems

Flowmaster

Flowmaster American Thunder Exhaust Systems for 1963 1000 SERIES, 1963-1966 C10 PICKUP - 817937 System, Thunder, Header-Back, 409 Stainless Steel, 1963-66 Chevy/GMC, C10, Long and Short Bed, Straight /Side/Down Outlets, Kit

SKU: FLO817937

Exhaust Systems

LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.

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Description

Flowmaster American Thunder exhaust systems are designed with the latest exhaust technology available--resulting in improved acceleration, passing power, and fuel mileage. A key to these performance upgrades is Flowmaster's use of mandrel-bent tubing, which allows superior exhaust gas flow. The systems also feature mufflers (single or dual) that deliver plenty of the rich Flowmaster sound you expect. Components are built from stainless steel or aluminized steel; and some models include tips. American Thunder exhausts are available in more than a hundred configurations for fitment on specific truck and car applications.

Part Type

63-66 Chevy C10 P/U Crossmember Back Exhaust

Data: v4.2 - Upd: 2026-10-16 04:08:39

Specifications

Product Attributes - Brand: Flowmaster
Product Attributes - Manufacturer's Part Number: 817937
Product Attributes - Part Type: Exhaust Systems
Product Attributes - Product Line: Flowmaster American Thunder Exhaust Systems
Product Attributes - UPC: 090127100523
Product Attributes - System Material: 409 stainless steel
Product Attributes - System Style: Header-back
Product Attributes - Exhaust Type: Dual
Product Attributes - Exit Location: Split rear/Split side
Product Attributes - System Finish: Natural/Black
Product Attributes - Catalytic Converter(s) Included: No
Product Attributes - Intermediate Pipe Diameter (in.): 2.50 in.
Product Attributes - Muffler Included: Yes
Product Attributes - Muffler Quantity: Two
Product Attributes - Muffler Configuration: Single inlet/Single outlet
Product Attributes - Muffler Style: Chambered
Product Attributes - Muffler Material: 409 stainless steel
Product Attributes - Muffler Finish: Black
Product Attributes - Hardware Included: Yes
Product Attributes - Tailpipe Diameter (in.): 2.50 in.
Product Attributes - Tip Included: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Notes: Fits both long and short bed. Does not fit trucks with torsion bar front suspension or X-frames. 3 exit options allow you to customize the look of your truck. Includes Super 44 mufflers
Product Attributes - Special Attention: It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Reference Information

Brand Name/s	Flowmaster
StreetFX SKU	flo817937
SFX Item ID	4984241
Supplier Item Code	4984241
Manufacturer SKU	817937
Manufacturer UPC	90127100523
Alternative References	FLM817937, C10

Compatibility

Application Data

Universal	No
Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1966
Ending Year	1965
Engine Type	V6
Engine Size	5.0L/305
Engine Family	GM V6
Body Style	Crew Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.0
CID	305
CC	5012
Application Notes	U/K, U/K; U/K; RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Small Block Chevy Swap
Region	USA

Universal	No
Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1966
Ending Year	1965
Engine Type	V6
Engine Size	5.0L/305
Engine Family	GM V6
Body Style	Extended Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.0
CID	305
CC	5012
Application Notes	U/K, U/K; U/K; RWD; LS Swap
Region	USA

Universal	No
Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1966
Ending Year	1965
Engine Type	L6
Engine Size	4.8L/292
Engine Family	GM inline 6-cylinder
Body Style	Standard Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	4.8
CID	292
CC	4801
Application Notes	U/K, U/K; U/K; RWD; LT Swap
Region	USA

Universal	No
Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1963
Ending Year	1965
Engine Type	L6
Engine Size	4.8L/292
Engine Family	GM inline 6-cylinder
Body Style	Crew Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	4.8
CID	292
CC	4801
Application Notes	U/K, U/K; U/K; RWD; Small Block Chevy Swap
Region	USA

Universal	No
Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	L6
Engine Size	5.7L/351
Engine Family	GM inline 6-cylinder
Body Style	Extended Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.7
CID	351
CC	5753
Application Notes	U/K, U/K; U/K; 4WD; Big Block Chevy Swap
Region	USA

Universal	No
Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	L6
Engine Size	5.7L/351
Engine Family	GM inline 6-cylinder
Body Style	Standard Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.7
CID	351
CC	5753
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; Big Block Chevy Swap
Region	USA

Universal	No
Make	CHEVROLET
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	L6
Engine Size	5.7L/351
Engine Family	GM inline 6-cylinder
Body Style	Crew Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.7
CID	351
CC	5753
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; LS Swap
Region	USA

Universal	No
Make	CHEVROLET
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	L6
Engine Size	5.7L/351
Engine Family	GM inline 6-cylinder
Body Style	Extended Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.7
CID	351
CC	5753
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; LT Swap
Region	USA

Universal	No
Make	CHEVROLET
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	L6
Engine Size	5.7L/351
Engine Family	GM inline 6-cylinder
Body Style	Standard Cab Pickup
Transmission	Manual
Drivetrain	4WD
Liter	5.7
CID	351
CC	5753
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; Small Block Chevy Swap
Region	USA

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; LS Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; LT Swap
Region	USA
Transmission	Automatic

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; Small Block Chevy Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; Big Block Chevy Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Big Block Chevy Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; LS Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; LT Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; Flowmaster American Thunder Crossmember-Back Exhaust System; Small Block Chevy Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V8
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	Chevy small block Gen I
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; LS Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; LT Swap
Region	USA
Transmission	Manual

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; RWD; Small Block Chevy Swap
Region	USA
Transmission	Automatic

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; Big Block Chevy Swap
Region	USA
Transmission	Automatic

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; Big Block Chevy Swap
Region	USA
Transmission	Automatic

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; LS Swap
Region	USA
Transmission	Automatic

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; LT Swap
Region	USA
Transmission	Automatic

Make	GMC
Model	1000 SERIES
Submodel	BASE
Beginning Year	1965
Ending Year	1965
Engine Type	V6
Liter	5.7
CID	351
CC	5753
Engine Size	5.7L/351
Engine Family	GM V6
Drivetrain	4WD
Application Notes	U/K, U/K; U/K; 4WD; Flowmaster American Thunder Crossmember-Back Exhaust System; Small Block Chevy Swap
Region	USA
Transmission	Automatic

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Flowmaster American Thunder Exhaust Systems for 1963 1000 SERIES, 1963-1966 C10 PICKUP - 817937 System, Thunder, Header-Back, 409 Stainless Steel, 1963-66 Chevy/GMC, C10, Long and Short Bed, Straight /Side/Down Outlets, Kit

Flowmaster American Thunder Exhaust Systems for 1963 1000 SERIES, 1963-1966 C10 PICKUP - 817937 System, Thunder, Header-Back, 409 Stainless Steel, 1963-66 Chevy/GMC, C10, Long and Short Bed, Straight /Side/Down Outlets, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

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