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Icon Forged -11cc Dish Pistons, 389, 3.75" Str., 4.120" Bore
UEM-IC-9946-STD-8
Pontiac Keith Black FHR (400/STD Bore or 389/.058" Over) 4.120" X 1.714" CH Forged Flat Top Pistons- 5/64 5/64 3/16 Rings, VP Volume -11cc *DUAL VP's for '66 & Earlier 389/421 22 Deg Heads & '67 & Later 14 Deg Heads*
Pricing:
$739.95
Description
These Icon pistons feature a diamond-machined skirt, head, mini-grooves, pin bore, gas accumulator, ring grooves, and pressure-drilled pin hole oiling. They have a V-rib design for light weight, strength, and maximum piston cooling.
Icon Line of Forged Pontiac Pistons by Keith Black use a high quality forging that results in a much lighter piston than the Federal Mogul/TRW. The pin is also quite a bit lighter than the TRW. These pistons come with pin locks so they can be used with BUSHED or PRESS-FIT rods.
Image may not represent actual product.
*STOCK CAST RODS MAY NEED TO BE NARROWED AND BALANCE PAD REMOVED TO CLEAR INSIDE PISTONS
Icon Line of Forged Pontiac Pistons by Keith Black use a high quality forging that results in a much lighter piston than the Federal Mogul/TRW. The pin is also quite a bit lighter than the TRW. These pistons come with pin locks so they can be used with BUSHED or PRESS-FIT rods.
Image may not represent actual product.
*STOCK CAST RODS MAY NEED TO BE NARROWED AND BALANCE PAD REMOVED TO CLEAR INSIDE PISTONS
Specifications/Information
| Specifications | |||||
|---|---|---|---|---|---|
| Stock Bore: | 4.150 | Rod Length: | 6.630 | Pin Diameter: | 0.9805 |
| Stroke: | 3.750 | Comp. Ht: | 1.714 | Top Land: | 0.307 |
| Minimum Clearance | OE Deck Height: | 10.250 | Weight Piston/Pin: | 540/149 | |
| Head Type | D-cup | Effective Head Volume | 15cc |
| Ext. Valve Depth | 0.220 | Ext. Valve Dia. | 1.960 |
| Int. Relief Depth | 0.221 | Int. Relief Dia. | 2.310 |
Compression Ratios
71-11.0
87-9.5
96-8.9
Pin Number
.980x3.000
Lock Ring
PRH107-3
Notes
Centered pin. UseOE or Edelbrock style heads. Some stock rods may need to be narrowed and balance pad removed.
Details
- UEM-IC-9946-STD-8
- UEM-IC-9946-STD-8
- Icon
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Shipping Information
- Item Requires Shipping
- 16.0 lbs.
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