Sealed 400AP 30 piston set for the 1970-1976 Chevrolet Impala V8 6.6L and other vehicles carries combustion force from each cylinder to its connecting rod. As an oversize engine piston set, it goes into cylinders bored to suit.
- Sealed Power Vintage line, made for classic engine rebuilds
- Cast from FM132 Eutectic proprietary alloy
- Cast aluminum piston with a recessed head
- 0.030 in oversize for a 4.1250 in bore diameter
- Piston pin outside diameter of 0.9275 in (23.559 mm)
Quick facts
- Part: Sealed 400AP 30 piston set
- Also called: engine piston set
- Fits: 1970-1976 Chevrolet Impala V8 6.6L and other vehicles
- Material: Cast aluminum
- Condition: New
Blue exhaust smoke, rising oil use, engine knock or low compression can come from worn pistons, rings or cylinders. If a worn piston is the cause, this set replaces it. Since those signs have other sources too, have a shop measure the bores and pistons with the engine apart and cool before you replace anything.
Fits
This V8 6.6L piston set also fits the 1976-1980 Chevrolet C10 V8 6.6L and the 1976-1980 Chevrolet C20 V8 6.6L, along with many other Chevrolet, GMC and Pontiac models. If your car is not named here, look it up in the "Vehicles it fits" section. The set meets or exceeds OEM specifications.
Specifications
Fit and size
- Quantity per vehicle: 8
- Bore diameter: 4.1250 in
- Oversize: 0.030 in
- Piston pin outside diameter: 0.9275 in (23.559 mm)
- Compression height: 1.540 in
- Top and second compression ring thickness: 0.0781 in
- Oil ring thickness: 0.1875 in
- Pin offset: 0.03 in (0.762 mm)
Build and materials
- Construction: cast
- Material: cast aluminum
- Head type: recessed
- Condition: new
- Country of origin: India
In the box
This listing is one piston set, and the engine takes eight pistons. Assembly lubricant is not included.
Interchange: P1546(8)030
TC1852030 · 1443030 · Z8308030
This part cross-references / interchanges with the following part numbers:
TC1852030, P1546(8)030, 1443030, Z8308030
Frequently Asked Questions
Is the Sealed 400AP 30 piston set right for a 1976-1980 Chevrolet C10 V8 6.6L?
Yes. Sealed 400AP 30 fits the 1976-1980 Chevrolet C10 V8 6.6L, which takes eight pistons. Other Chevrolet, GMC and Pontiac models are in the "Vehicles it fits" section.
Does the 400AP 30 piston set come with assembly lubricant?
No. Assembly lubricant is not included with this Sealed Power set, so have your own on hand when you build the engine.
How much oversize is the Sealed Power 400AP 30 piston set?
Sealed Power 400AP 30 is 0.030 in oversize and matches a 4.1250 in bore diameter. It has a recessed head and a cast aluminum body.
Can worn pistons cause blue smoke, oil use or engine knock?
They can, though worn rings or cylinders also produce blue smoke, oil use and knock. A shop can measure the pistons and bores against the 4.1250 in bore diameter.
Does Sealed Power 400AP 30 replace Z8308030?
Yes. Z8308030 is listed as an interchange number for this set, along with P1546(8)030, TC1852030 and 1443030.
