Key specs
- Bore Diameter
- 3.940 in
- Compression Height
- 1.460 in
- Forging Type
- Slab Side
- Piston Material
- 2618
- Piston Quantity
- 8
- Piston Volume
- -18.00 cc
Have it fitted at Willys
We fit parts at our Oxley and Warana workshops. Order the part and we'll book you in, or ask for a fitted price first.
Get a fitting quote- Returns within 30 days
- 12 month warranty
- Fitting available
Wiseco Engine Internals Performance Pistons Small Block Chrysler Forged Pistons
Wiseco Professional Chrysler 318 Piston Set of 8 - 3.940 in. Bore - 1.460 in. CH, -18.00 CC
- Fits Chrysler
- Fits Valiant CL
- Fits Valiant CM
- Fits Valiant VF
- Fits Valiant VG
- Fits Valiant VH
- +3 more
$1,902.64
Including GST
Available to order – usually ships in 2-3 weeks
or 4 interest-free payments of $475.66 with Afterpay on orders up to $2,000Zip and humm are available over the phone: (07) 5619 7869
Will it fit your vehicle?
| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Chrysler | — | — | — | — |
| Chrysler | Valiant | CL (1976-1978) | Nov 1976 – 1978 | 318 |
| Chrysler | Valiant | CM (1978-1981) | Nov 1978 – Aug 1981 | 318 |
| Chrysler | Valiant | VF (1969-1970) | Mar 1969 – 1970 | 318 |
| Chrysler | Valiant | VG (1970-1971) | Aug 1970 – 1971 | 318 |
| Chrysler | Valiant | VH (1971-1973) | Jun 1971 – 1973 | 318 |
| Chrysler | Valiant | VJ (1973-1975) | May 1973 – 1975 | 318 |
| Chrysler | Valiant | VK (1975-1976) | Oct 1975 – Jun 1976 | 318 |
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.
Check my fitmentor call(07) 5619 7869or text0485 885 957oremail us
Bore 3.940 in · Compression height 1.460 in · Volume -18.00 cc · Set of 8 · wrist pins included
Description
Set of 8 Wiseco Professional Series forged pistons for the Chrysler 318: 3.940 in (100.08 mm) bore, 1.460 in (37.08 mm) compression height and -18.00 cc crown volume. Wrist pins are included; rings are not.
What’s in the box
- 8 forged pistons
- 8 wrist pins (25.00 mm / 0.984 in diameter, 5115 steel, floating)
Rings are not part of this set, so order a ring set to suit the finished bore and the ring groove widths listed below: Wiseco piston ring sets.
Matching it to your Chrysler 318
Wiseco list this set for a 4.000 in stroke and 6.123 in connecting rods. Compression height plus rod length plus half the stroke comes to 9.583 in (243.41 mm): compare that with your block’s deck height to see where the piston sits at top dead centre.
Crown volume is quoted as -18.00 cc: Wiseco use a negative figure when the dish or valve reliefs add volume to 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 K0145A3940.
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: slab-side design, with a coated skirt.
More: Small Block Chrysler forged pistons · all performance pistons · Wiseco
Wiseco part number: K0145A3940
Specifications
| Bore Diameter | 3.940 in |
|---|---|
| Compression Height | 1.460 in |
| Forging Type | Slab Side |
| Piston Material | 2618 |
| Piston Quantity | 8 |
| Piston Volume | -18.00 cc |
| Ring Set Included | No |
| Rod Length | 6.123 in |
| Skirt Coating | Yes |
| Stroke | 4.000 in |
| Wrist Pin Included | Yes |
| Wrist Pin Material | 5115 |
| Wrist Pin Outer Diameter | 0.984 in |
| Wrist Pin Style | Floating |
| Brand | Wiseco |
| SKU | WPC-K0145A3940 |
| MPN | K0145A3940 |
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.
- Wrong fit: if a part covered by our Fitment Guarantee doesn’t fit, we pay the return freight both ways and there’s no restocking fee.
- 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.
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.
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