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Icon Forged -4.5cc Flat Top Pistons, 400, 3.75" Str,
IC890-030, IC890-040, IC890-060
UEM-IC-890
Flat Top
2618 Forged Aluminum
6.625" Rod Length
1/16", 1/16", 3/16" Ring Size
-4.50cc Valve Pocket
Press-fit or floating
.980 Pin
.030 Over- 4.150" Bore- IC890-030
.040 Over- 4.160" Bore- IC890-040
.060 Over- 4.180" Bore- IC890-060
Set/8
2618 Forged Aluminum
6.625" Rod Length
1/16", 1/16", 3/16" Ring Size
-4.50cc Valve Pocket
Press-fit or floating
.980 Pin
.030 Over- 4.150" Bore- IC890-030
.040 Over- 4.160" Bore- IC890-040
.060 Over- 4.180" Bore- IC890-060
Set/8
Pricing:
$799.95
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: | 4.120 | Rod Length: | 6.630 | Pin Diameter: | 0.9805 |
| Stroke: | 3.750 | Comp. Ht: | 1.720 | Top Land: | 0.250 |
| Minimum Clearance | OE Deck Height: | 10.250 | Weight Piston/Pin: | 558/163 | |
| Head Type | Flat Top | Effective Head Volume | 4.5cc |
| Ext. Valve Depth | 0.206 | Ext. Valve Dia. | 1.780 |
| Int. Relief Depth | 0.210 | Int. Relief Dia. | 2.330 |
Compression Ratios
71-10.9
87-9.3
96-8.6
Pin Number
.980x3.000
Lock Ring
PRH107-3
Notes
Centered pin. use OE or Edelbrock style heads. Some stock rods may need to be narrowed and balance pad removed.
Details
- UEM-IC-890
- UEM-IC-890
- Icon
- New
Categories
Shipping Information
- Item Requires Shipping
- 16.0 lbs.
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