SKU: 8874254427

**In Stock** 650hp LS3 Forged Naturally Aspirated Engine | Long Motor

Sale price$8995.50 Regular price$9995.00
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Ships within 48 hours · Estimated delivery Sep 18 - Sep 23

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Description

**In Stock** 650hp LS3 Forged Naturally Aspirated Engine | Long MotorIn Stock LS3 377ci Forged High Comp Race Engine Long Motor Our LSX Performance Parts Custom built LS 377ci LS3 Forged Engine is built with a purpose To produce the highest performing N A stock stroke package to suit your race needs. This engine package is perfect for racing categories that hold cubic inch & stroke limitations such as improved racing IPRA and similar. We have developed and tested this combo to produce proven race winning results to

In Stock LS3 377ci Forged High Comp Race Engine | Long Motor
Our LSX Performance Parts Custom built LS 377ci LS3 Forged Engine is built with a purpose - To produce the highest performing N/A stock stroke package to suit your race needs.
This engine package is perfect for racing categories that hold cubic inch & stroke limitations such as improved racing IPRA and similar.
We have developed and tested this combo to produce proven race winning results to keep your motorsport program competitive, reliable and low maintenance!
We only use the best products on the market that have been tried, Tested & Proven to produce the results that our customers expect.
All internals are of the highest quality American Forged steel & all fasteners are the one & only ARP.

Your New LS3 377ci Forged Engine Package Includes
- GM LS3 6.2 Aluminum Engine Block;
- Stock Stroke 3.625" Inch Crankshaft | 58x Reluctor;
- Manley Forged H beam Conrods | 6.125" Inch;
- Carillo Bullet Dome Top Pistons Set | 4.070" (.005" Thou Oversized);
- Clevite Race Series Conrod Bearings;
- Clevite Race Series Main Bearings;
- Coated Cam Bearings;
- Custom Grind Hydraulic Roller Naturally Aspirated Camshaft;
- Billet Double Row Timing Chain Set;
- Melling High Volume Oil Pump;
- GM LS7 Lifters Set;
- Lifter Guides & Bolts;
- MLS Head Gaskets Set;
- Head Bolts Set;
- Chromoly Pushrods Set;
- LS3 Cylinder Heads;
- CNC Ported Intake Runners;
- CNC Ported Exhaust Ports;
- CNC Ported Combustion Chambers;
- Machined Deck Surfaces;
- .660" Lift Dual Valve Spring Kit;
- LS3 Intake & Exhaust Valves;
- CHE Rocker Trunnion Bearing Upgrade;
- ARP Cam Bolts;
- ARP Harmonic Balancer Bolt;
- ARP Oil Pump Bolts;
- Oil Pick Up Support Bracket;
- GM LS Timing Cover;
- GM LS Rear Plate;
- Block Deck Machined To Zero Deck Height;
- Cylinder Bores CNC Machined & Torque Plate Honed;
- Align Hone Main Tunnel;
- De-Burred Oil Galleries;
- Stroker Clearance Bores;
- Balance Rotating Assembly;
- Blueprinted Bearing Clearances;
- Dummy assembly;
- Final assembly;

Want To Speak To Us About Your New Engine Package?
Sure! Give us a call on
(03)8595 4343
OR Simply click
Get In Touch
& schedule a time that best suits you. We will have one of our sales consultants contact you at your convenience.
Alternatively, We are available for live chat NOW.

Buy NOW!
Shop with confidence with free freight Australia wide & discounted pricing.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 8874254427

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4.6 ★★★★★
Based on 11 reviews
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Verified Purchase
Thomas W.
Phoenix, US
★★★★★ 5
Looks very good quality to me.
Size: 85-300 HP
Everything looks good quality to me. I find it odd that the people leaving bad reviews with pictures of broken and melted impeller, when you can clearly see the brass on the inside is brown and dirty like old pennies and mine is shiny new. It's almost like the took the pictures of the ones they replaced to get a refund and a free repair kit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
A
Verified Purchase
Amazon Customer
Bozeman, US
★★★★★ 5
Well made materials.
Arrived on time and well packaged. Good quality materials and exact fit. Perfect fit, Easy to install. Make sure to review installation instruction. Don't put the gaskets in the wrong place. Will buy again from this vender.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 17, 2025
O
Verified Purchase
Outdoorfun
San Leandro, US
★★★★★ 5
Good for the $$$
Worked great on my Mercruiser Alpha One Gen 2. Once the bottom unit of the outdrive is off and cleaned it only takes a few minutes to install impeller, seals and housing. A very affordable alternative to taking it to the shop.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
F
Verified Purchase
FrankieJ
Battle Creek, US
★★★★★ 5
Fit perfectly and very complete set of parts
Had everything I needed plus some extra parts in the kit. I probably could have just replaced the impeller for slightly less but while everything was disassembled you might as well replace the works. Included - Water Pump Impeller, Housing, Key, Face Plate, Face Plate Gasket, O-Ring, Seal Face and Carrier Assembly Oil Seal
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 28, 2025
C
Verified Purchase
chris null
Houston, US
★★★★★ 5
Water impeller kit
Worked perfectly for my ‘02 Rinker Captiva 212 with the 5.7 Mercruiser Aloha one outdrive !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 9, 2025

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