Mr Gasket Intake Manifold Gaskets Performance Material
720-420

Chevrolet - Big Block
Specifications:
Get the right gasket for your project. These top-of-the-line Mr. Gasket Intake Manifold Gaskets are recommended for OE replacement, high-performance street, drag race and oval track applications. All Mr. Gasket Intake Gaskets are sold in pairs unless specified otherwise. Performance Material Ultra-Seal Material Ultra-Seal III Material
Does Mr Gasket 420 fit your vehicle?
1978 GMC C35
- Liter: 7.4
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1974 GMC C15/C1500 SUBURBAN
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: L
1974 GMC C25/C2500 PICKUP
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
1980 GMC K3500
- Liter: 7.4
- SubModel: SIERRA GRANDE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1980 CHEVROLET C20 SUBURBAN
- Liter: 7.4
- SubModel: SCOTTSDALE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1969 CHEVROLET K10 SUBURBAN
- Liter: 6.5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 396
- Engine Type: V8 ( 6.5L / 396 )
- Engine Vin: E
1971 GMC SPRINT
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: E
1972 CHEVROLET EL CAMINO
- Liter: 6.6
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 402
- Engine Type: V8 ( 6.6L / 402 )
- Engine Vin: U
1971 GMC K15/K1500 SUBURBAN
- Liter: 6.6
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 402
- Engine Type: V8 ( 6.6L / 402 )
- Engine Vin: K
1971 CHEVROLET CORVETTE
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: -
1968 CHEVROLET K10 PICKUP
- Liter: 6.5
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 396
- Engine Type: V8 ( 6.5L / 396 )
- Engine Vin: E
1974 CHEVROLET EL CAMINO
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: Dart Big Chief; Port Dimensions W-1.83 in. x H-2.43 in.
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Y
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.