CJ’s Custom Cars

CJ’s Custom Cars Engine rebuilds, swaps and modifications. Distributor for Genuine GM, Harrop, Manta, Haltech, FuelTech and more! https://cjscustomcars.com.au

🔥 LS 403 STROKER PACKAGE 650-700HP 🔥We’ve put together something different… a complete drop in LS package for anyone wan...
19/04/2026

🔥 LS 403 STROKER PACKAGE 650-700HP 🔥

We’ve put together something different… a complete drop in LS package for anyone wanting to do their own install at home 👌

✅ Engine dyno’d & tuned with Haltech
✅ Ready to fire up and go
✅ Minimal setup required

💪 L98 403ci Stroker
Making 650–700hp at the flywheel

Highlights:
• BTR stroker crank & rods
• Wiseco pistons
• BTR Stage 5 NA cam
• Tremaniac CNC ported heads
• Ferrea valves + BTR valve springs
• Melling oil pump (Boundary gears)
• Haltech Rebel LS (wired & ready)
• Edelbrock Super Victor 4500 + rails
• Accufab 4500 throttle body
• Deka 875cc injectors
• Meziere electric water pump
• ATI balancer
• Genuine LS coils + Tuff Mounts brackets
• Magna Fuel Pro Tuner 750 fuel pump
• Magna Fuel Large port EFI Regulator
• 🔥 Billet CJ’s Custom Cars valve covers

This is a no shortcuts, fully built combo ready for street or strip 💯

Complete package $44,900

For more details as this isn’t all send us a DM!

We’re expanding the range of LS parts we stock at our East Rockingham workshop to include bearings & piston rings.We now...
21/01/2026

We’re expanding the range of LS parts we stock at our East Rockingham workshop to include bearings & piston rings.

We now carry:

King SI-Series big-end bearings (Standard, -0.001", -0.010", -0.020") – $53

King SI-Series main bearings (Standard, -0.001", -0.010", -0.020") – $149

NPR piston ring sets (1.2, 1.5, 2.5) – $215

NPR piston ring sets (1.5, 1.5, 2.5) – $150

Durabond CH-10 cam bearings – $45

Durabond CH-25 cam bearings – $55

Last year we focused on building out our Genuine GM range, which now covers the majority of everyday service parts. This year, we’re building on that foundation by adding high-quality aftermarket options alongside OEM.

We also offer trade pricing to other workshops, with reliable local stock and quick access to parts we don’t carry on the shelf.

With a strong supplier network in both Australia and the US, we can source almost any LS part at competitive pricing.

You can find most of the common parts we sell and use on our website at cjscustomcars.com.au or give us a call on 0423 492 344

🚘 VR SS Build Completed! 🚘We’ve been a bit quiet on posts lately, but for good reason - This VR SS build was proudly han...
04/10/2025

🚘 VR SS Build Completed! 🚘

We’ve been a bit quiet on posts lately, but for good reason - This VR SS build was proudly handed back to its owner two weeks ago after a massive 14-month transformation!

Here’s a quick rundown of what went into this beast 👇
• Holden 383 stroker with Yella Terra Super X heads ✅
• Harrop 2650 supercharger kit ✅
• Haltech S3 ECU with a full custom wiring harness completed by Ultimate Auto Electrics ✅
• Haltech UC10 digital dash ✅
• ICE Ignition kit ✅
• Built TH400 conversion ✅
• McDonald Bros 9” 4-link conversion replacing the factory IRS ✅
• Full custom rear end - tin work, chassis notches, tubs, firewall, and boot floor, fully fabricated in-house✅
• Wilwood brakes front and rear with custom brake lines ✅
• Custom E85 fuel system with fuel cell ✅
• Twin 3” stainless TIG-purged exhaust system, fully fabricated in-house ✅
• Viking front coilover setup ✅

This car came to us as a completely stock manual 304 VR SS, and every part of the build was completed or organised entirely in-house.

It’s now out on the road for some shake-down km on a safe tune, already making 590rwhp at just 6000rpm and 8psi of boost. Once it’s bedded in, we’ll be turning it up to 7500rpm and 14psi - so stay tuned for the full power results in the coming weeks! 💪🔥

Another sweet fuel system being fitted to Seth’s LSA VE build aftermarketindustries
02/10/2025

Another sweet fuel system being fitted to Seth’s LSA VE build aftermarketindustries

Lsa superchargers and Harrop lids with upgraded brick with -16an fittings in stock and ready to go $8250 package price 💨...
01/10/2025

Lsa superchargers and Harrop lids with upgraded brick with -16an fittings in stock and ready to go $8250 package price 💨💨💨

We also offer install of these along with all other parts required to install this to your LS!!

Wow what a week!! Not much left now getting ready for the dyno on Monday. The long weeks and long days are paying off se...
02/09/2025

Wow what a week!! Not much left now getting ready for the dyno on Monday. The long weeks and long days are paying off seeing results like this!! Almost there now home stretch. This has been a huge build all done in house start to finish 🥵😎

Big couple of days on the TIG! 💥We’ve been busy getting this custom twin 3” exhaust fully purge welded, with only the ti...
16/08/2025

Big couple of days on the TIG! 💥
We’ve been busy getting this custom twin 3” exhaust fully purge welded, with only the tips and brackets left to finish it off. 🔧🔥

This VR SS came to us bone stock – manual 304 and all – and now the build is just about ready to be revealed. Everything has been designed, fabricated, and finished 100% in-house.

Stay tuned… the full completed build is coming soon, and trust us, you won’t want to miss it! 👀🚗💨

We've just restocked all our Genuine GM parts!We carry a wide range of engine components to suit all LS engines, ready f...
13/08/2025

We've just restocked all our Genuine GM parts!
We carry a wide range of engine components to suit all LS engines, ready for purchase online or in-store. Open to both the public and trade customers.

https://cjscustomcars.com.au

Due to a unexpected family tragedy, we will not be fully operating from August 9th to August 17th. We will still be ope...
08/08/2025

Due to a unexpected family tragedy, we will not be fully operating from August 9th to August 17th. We will still be open during normal hours and available to call on our main phone number (0423 492 344) but please be aware that things will be moving slower during this period.

We appreciate your understanding.
Callam & Josh

Address

Lodge Drive
East Rockingham, WA
6168

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+61455441114

Website

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