KB Hypereutectic Pistons · SKB370.030
Part #: SKB370.030
UPC: 800745191854
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Description: KB Hyper Single Piston - Pontiac 389 Rod 6.630 Flat Top +3.5cc 2V; 4.0626+.030", Flat Top 3.5cc w/2 V,Top Ring:5/64", 2nd Ring: 1/16", Oil Ring: 3/16", Comp Ratios:110.7/71cc,9.2/87cc,8.5/96cc,7.6/111cc,Gram weight 609/163, INT-Valve Depth/DIA .237-2.100", EX-Relief Depth/Dia .237-2.100"
Description:
Description
KB Series Hypereutectic 390 Alloy with 16% Silicon is a High Performance Piston for Marine, Drag, Circle Track and Towng. Fully machined head and valve reliefs. Mini Grooves to reduce scuffing if overheated. Accumulator Grove aids with compression ring seal. Triple Spiral Lock Rings. Machined in Oil Returns. CNC machined pin bores produce straight and accurately sized bores. Diamond finished skirts.
Features & benefits
- Bore: 4.0626+.030"
- Check small end of rod to piston before assembly / .045" clearance per side minimum
- Pin Size:0.9805/ Pin#098X300K
- Ring Set: 4062AM8
- Stroke: 3.750
- Comp HT: 1.720
- O.E Deck HT: 10.250
- Lock Ring:PRH107-3
- Flat Top 3.5cc w/ 2 Valve Reliefs
- Centered Pin
- Designed for 20 degree heads 1966 and earlier
- This piston will NOT work with 14 degree heads
Specifications
- GTIN
- 00800745191854
- Life cycle
- Available to Order
- AAM brand code
- KBP
- Warehouse brand code
- BJDT
- AAIA brand code
- BJDT
Attributes
- Alloy
- 390
- Base Number
- KB370
- Bore (in)
- 4.0626
- Bore (mm)
- 103.2
- Compression Ratio
- 71-10.7, 87-9.2, 96-8.5, 111-7.6
- Crown (cc)
- +3.5cc
- Crown Type
- FLAT TOP 1V
- Eng. Disp Liters
- 6.4
- Eng. Disp. In.
- 389
- Engine Family
- Pontiac V8
- Engine Manufacturer
- Pontiac
- Exhaust Valve Depth/diameter
- .237/2.100
- Intake Valve Depth/diameter
- .237/2.100
- Lock
- PRH107-3
- Make For Engine Family
- General Motors
- Oe Deck Height
- 10.25
- Oversize
- .030
- Oversizes
- .030 .040 .060
- Pin Configuration
- Centered
- Pin Diameter (in)
- .980
- Pin Diameter (mm)
- 24.9
- Pin Number
- 0980x300K
- Pin Type
- Floating
- Ring Pack
- 5/64, 5/64, 3/16
- Rod (in)
- 6.63
- Rod (mm)
- 168.402
- Sold As
- SINGLE
- Stroke (in)
- 3.75
- Stroke (mm)
- 95.3
- Top Land
- .200
- Year From
- 1959
- Year Range
- 1959-1966
- Year To
- 1966
Fitment status
This product is universal and will fit your application.
Resources
KB Hypereutectic Pistons SKB370.030
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