Wiseco RED Series Chevy Big Block Piston Set of 8 – 4.125 in. Bore – 1.765 in. CH, 42.00 CC
$1,772.02
or 4 interest-free payments of $443.01 with Afterpay on orders up to $2,000Zip and humm are available over the phone: (07) 5619 7869
Bore 4.125 in · Compression height 1.765 in · Volume 42.00 cc · Set of 8 · rings included · wrist pins included
Available to order – usually ships in 2-3 weeks
Check fitment by rego or VINFast AU-Wide Shipping
Returns within 30 days
12 month warranty
Will it fit your vehicle?
| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Chev / GMC | — | — | — | — |
A dash means the listing does not narrow it down that far (for example no build dates are listed). Check with us if your vehicle was built near a model change.
Fitment listings are a guide. Not sure? Send us your rego or VIN and our team will check the part for your vehicle, before or after you order.
Description
Set of 8 Wiseco RED Series forged pistons for the Chevy Big Block: 4.125 in (104.77 mm) bore, 1.765 in (44.83 mm) compression height and +42.00 cc crown volume. Rings and wrist pins are included.
What’s in the box
- 8 forged pistons
- 8 wrist pins (0.990 in / 25.15 mm diameter, 5115 steel, floating, Wiseco part S460)
- Piston ring set (Wiseco J10001-4125-5)
- 16 spiral lock retainers (Wiseco CS25)
Matching it to your Chevy Big Block
Wiseco list this set for a 3.760 in stroke and 6.135 in connecting rods. Compression height plus rod length plus half the stroke comes to 9.780 in (248.41 mm): compare that with your block’s deck height to see where the piston sits at top dead centre.
Crown volume is quoted as +42.00 cc: a positive figure means a dome that takes volume out of the combustion chamber. Work out the compression ratio for your combination (chamber volume, gasket bore and thickness, deck clearance) before you order.
The bore size is the finished bore these pistons are made for, so have the block measured and then bored and honed to suit, with piston-to-wall clearance set to Wiseco’s figure for part RED0087X125.
Material: 2618 aluminium, the low-silicon alloy usually chosen for boosted and high-load engines (it needs more piston-to-wall clearance than 4032).
Forging: strutted design, with a coated skirt.
Ring grooves: 0.0640 in top, 0.0640 in second and 0.188 in oil (ductile iron top ring, iron second ring and carbon steel oil ring).
Specifications
| Bore Diameter | 4.125 in |
|---|---|
| Compression Height | 1.765 in |
| Forging Type | Strutted |
| Oil Ring Tension | Low |
| Oil Ring Thickness | 0.188 in |
| Piston Material | 2618 |
| Piston Quantity | 8 |
| Piston Volume | 42.00 cc |
| Ring Quantity | 8 |
| Ring Set Included | Yes |
| Ring Set Part Number | J10001-4125-5 |
| Rod Length | 6.135 in |
| Second Compression Ring Thickness | 0.0640 in |
| Second Ring Material | Iron |
| Skirt Coating | Yes |
| Stroke | 3.760 in |
| Third Ring Material | Carbon Steel |
| Top Compression Ring Thickness | 0.0640 in |
| Top Ring Material | Ductile Iron |
| Wrist Pin Included | Yes |
| Wrist Pin Material | 5115 |
| Wrist Pin Outer Diameter | 0.990 in |
| Wrist Pin Part Number | S460 |
| Wrist Pin Quantity | 8 |
| Wrist Pin Retainer Included | Yes |
| Wrist Pin Retainer Material | High Carbon Spring Steel |
| Wrist Pin Retainer Part Number | CS25 |
| Wrist Pin Retainer Quantity | 16 |
| Wrist Pin Retainer Style | Spiral Lock |
| Wrist Pin Retainer Thickness | 0.085 in |
| Wrist Pin Style | Floating |
Boostline conrods listed for this engine family: Boostline Connecting Rod Kit | Chevy Big Block 6.385in. | ARP2000, Boostline Connecting Rod Kit | Chevy Big Block 6.135in. | ARP2000, Boostline Connecting Rod Kit | Chevy Big Block 6.535in. | ARP2000. This set is listed for 6.135 in rods, so match the length.
More: Big Block Chev forged pistons · all performance pistons · Wiseco
Wiseco part number: RED0087X125
Shipped Australia-Wide
- Dispatched from within Australia with tracking.
- Available to order – usually ships in 2–3 weeks.
- Freight is quoted after you order – we confirm the cost to your address before dispatch.
- Delivery usually takes 2–10 business days after dispatch, depending on your location.
- Need your tracking number? Once your order has shipped, email sales@willysworkshop.com.au with your order number and we’ll send you the carrier and tracking details.
Freight question? Call us on (07) 5619 7869.
Additional information
| Make | Chev / GMC |
|---|
Warranty: 12 months from Willys Workshop
Sold and warranted by Willys Workshop. Parts carry our 12-month warranty against defects, from the date of purchase or installation (whichever is later), subject to any manufacturer terms and fair wear and tear (Terms & Conditions, clause 7.1(b)). This is in addition to your rights under the Australian Consumer Law, which cannot be excluded.
- 30-day change-of-mind returns on eligible items: unused, uninstalled and in the original packaging, with a Return Authorisation from us first. A 15% restocking fee applies and return postage is at your cost.
- Special-order or imported-to-order items, electrical parts, ECUs and tuners once registered, connected or flashed, parts that have been fitted or modified, and clearance items can’t be returned for change of mind. Your rights for faulty goods still apply.
- Refunds are made to your original payment method within 14 business days of us receiving and inspecting the return.
Full details: Returns & Refund Policy and Terms & Conditions.
Warranty claims are coordinated through Willys Workshop. Email sales@willysworkshop.com.au or call Warana (07) 5619 7869 / Oxley (07) 3377 3421 with your order number and a description of the issue.
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