Chevy 350 Speed Pro Pistons
This is a new set (8) of Speed Pro hypereutectic Chevy 350 pistons - H631CP. +60 bore. Flat top with 2 valve reliefs. Anti-friction coated skirts. For use with stock length 5.7" connecting rods. Includes pins and wire locks. Can be used with either pressed fit or bushed rods.
H631CP60
Bore
|
4.060" |
Stroke
|
3.48" |
Dome Shape
|
Flat, 2 VR |
Dome Volume
|
-5cc |
Comp. Distance
|
1.560" |
Pin Type
|
Press or Float |
Ring Size
|
5/64, 5/64, 3/16 |
Piston Weight
|
582 g. (approx)
|
Compression (@ .025 deck clearance)
58cc
|
64cc
|
68cc
|
72cc
|
76cc
|
10.54
|
9.85
|
9.45
|
9.08
|
8.74
|
|
These hypereutectic Speed Pros are perfect for stock to moderate performance rebuilds. Silicone aluminum alloy allows them to run with tighter clearances, less friction, and increased sealing. Higher strength compared to regular cast pistons. Duroshield coating on piston skirts delivers longer life and reduced friction.
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