SPEEDMASTER 1-290-017 Ci Rotating Kit 3.750 383 1PC-SEAL

( Brand: Speedmaster ), ( Manufacturer Part Number: 1-290-017 ), ( California Prop 65 Warning: Warning, Birth Defects, Or Other Reproductive Harm. For More Information, Visit Www.p65warnings.ca.gov ), ( Fitment: Aftermarket Modifications Needed )

Review SPEEDMASTER Chevy Sbc 3.750 383 Ci Rotating Assembly Kit Series fits SPORTSMAN 350 750

The 1-290-017 Chevy 350 3.750 383 ci 1pc-seal rotating kit, manufactured by Speedmaster, is a high-quality upgrade for your Chevy engine. This sportsman kit is specifically designed for 350 cubic inch engines that have been enlarged to 383 ci, providing enhanced performance and durability.

The kit includes a one-piece seal rotating assembly, which is a significant improvement over traditional two-piece assemblies. The one-piece design eliminates the need for a separate seal, reducing the risk of oil leaks and ensuring a tighter seal between the crankshaft and bearing. This results in improved engine efficiency, reduced oil consumption, and extended engine life.

The rotating kit is made from top-quality materials, including forged steel crankshafts and high-strength bearing races. The crankshaft is precision-machined for perfect balance, ensuring smooth operation and reduced vibration. The bearing races are designed for optimum load distribution, reducing wear and extending the lifespan of the bearings.

The kit also includes high-performance seals, which are specifically designed for high-rpm applications. These seals provide an excellent seal against oil leakage, even under the extreme conditions of high-performance racing.

The Speedmaster sportsman rotating kit is a great choice for any Chevy engine enthusiast looking to upgrade their engine for improved performance and durability. With its one-piece seal design, high-quality materials, and high-performance seals, this kit is sure to provide years of reliable service.

1. High-quality components: The kit is made with high-quality materials, ensuring durability and reliability.

2. One-piece seal design: The one-piece seal design eliminates the need for gaskets, reducing the risk of leaks and improving engine performance.

3. 383 ci engine size: The 383 ci engine size provides more power and torque compared to a standard 350 ci engine.

4. Compatibility: The kit is compatible with various Chevy engines, making it a versatile option for car enthusiasts.

1. Price: The kit is on the higher end of the price range for rotating kits, which may be a deterrent for some buyers.

2. Installation: The installation process may be challenging for those without mechanical experience, requiring professional installation.

3. Limited availability: The kit may not be widely available in various parts stores or online retailers, making it difficult to find replacement parts if needed.

If you are a car enthusiast looking to upgrade your Chevy engine with a high-quality rotating kit, the 1-290-017 from Sportsman Speedmaster is a worthwhile investment. The kit's one-piece seal design, compatibility with various Chevy engines, and increased engine size offer significant benefits. However, the high price point and potential difficulty in installation may be considerations for some buyers. Ultimately, the decision to purchase this kit should be based on your individual needs and budget.

If you are comfortable with the installation process or have access to a professional mechanic, the 1-290-017 Chevy 350 3.750 383 ci 1pc-seal rotating kit from Sportsman Speedmaster is a great option for boosting your engine's performance and reliability. However, if the price point is a concern, you may want to explore other rotating kit options with similar features and benefits.

Details:

Balanced: no pistons included: yes piston rings and ring oversize in.

Speedmaster Sportsman series rotating assemblies are the perfect choice for engines up to 900 hp and rpm.

Warranty is 12 months unless stated otherwise in the ad.

Over the years, company has grown into a worldwide high performance powerhouse.

Rod bearings included: yes bearing undersized in: stock main cam no gaskets oil pump camshaft lifters timing chain and gears plastique assembly lubricant quantity: sold as a kit. Speedmaster Sportsman series rotating assemblies offer superior strength, performance and reliability. Piston material: forged aluminum style: flat top, with two valve reliefs head volume cc: -4.

The team has shared all finest moments in numerous accolades for its people, products, and approach.

Actual product may vary from the pictures provided.

00cc wrist pin style: floating piston ring facing material: plasma-Molly crankshaft included: yes forged 4340 steel rear main seal 1-piece engine balance: external connecting rods rod beam i-beam length to in: 5.

All pictures displayed in our offers are for illustration purposes only.

The ultimate token of precision, Speedmaster is worlds only major parts manufacturer to equip cars from standard replacement top fuel dragsters.

While all care is taken, any errors or omissions in the item details unintentional.

They include a Speedmaster forged 4340 steel crankshaft, i-beam connecting rods with APR bolts, pistons, rings and 'king bearings' main rod bearings.

part #: 1290017 prices

• $1099.00-$1899.00

specifications cranshafengin:

• for models: 350, 750, Sportsman
• for makes: Chevy
• brand: Speedmaster
• mpn: 1-290-017
• california prop 65 warning: Warning, Birth Defects, Or Other Reproductive Harm. For More Information, Visit Www.p65warnings.ca.gov
• fitment: Aftermarket Modifications Needed

Seller cranshafengin:

• # feedbacks 11-03-19: 70189
• city: Rialto, California
• zipcode: 92376
• rating 11-03-19: 100.0%

Returns cranshafengin:

• policy: returns accepted
• paid by: Buyer
• time: 30 Days

Offer cranshafengin:

• Sold: 0
• quantity: 10
• best offer: false
• Started: November 3, 2019, 7:27 am
• bids: 0

Payments cranshafengin:

• PayPal

General cranshafengin:

• in stock: Yes
• Engines Components > Crankshafts Parts
• condition: New

Shipping cranshafengin:

• type: Calculated
• handling: 1 days

Ratings:

1. just what I needed 10-01-19
2. Would buy from again 10-01-19
3. great deal 10-01-19
4. A great deal 10-01-19
5. Great product and fast shipping A 10-01-19

Speedmaster 1-290-017 Is Similar To:

• 1-290-002 Speedmaster Chevy Sbc Ci Rotating Assembly Kit Street Series (89.5% similar) Engine stroke in: chevy sbc balanced: no pistons included: yes piston rings and ring oversize in. Speedmaster street series rotating assemblies are the perfect choice for engines up to 500 hp and IDLE-5500 rpm. Piston material: hyper eutectic aluminum style: flat top, with four valve reliefs head ...(November 26th, 2018)
• 4.000 Pce290.1118 Speedmaster Chevy Sbc 350 Forged 2pc I-beam Engine Stroker Rotating Assembly (55.1% similar) Piston material forged aluminum piston dish, with two valve reliefs piston head volume cc since then he has worked on various pit crews in all sorts of racing from circle track racing to alcohol funny cars. He has been building cars since before he was old enough to legally have a license and began ...(February 9th, 2016)
• 1-290-003 Speedmaster Chevy Sbc Ci Rotating Assembly Kit Superstreet 840136502562 (77.9% similar) Warranty is 12 months unless stated otherwise in the ad. The ultimate token of precision, Speedmaster is worlds only major parts manufacturer to equip cars from standard replacement top fuel dragsters. The team has shared all finest moments in numerous accolades for its people, products, and ...(December 23rd, 2019)
• Pce276.1014 Speedmaster Forged Steel Crankshaft Small Block Chevy 012933012319 (29.1% similar) Speedmaster PCE276...(May 27th, 2018)
• Pce291.1011 Speedmaster Race Series Harmonic Balancer 840136534587 (38.8% similar) Race series harmonic balance PCE291.1011 by Speedmaster. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. New condition...(May 6th, 2022)
• Speedmaster Pce291.1085 New Chevy Sbc 350 6.250 Inch Internally Balanced Sfi Harmonic Balancer (40.7% similar) Brand new never used...(March 1st, 2025)
• Speedmaster Pc22205 Big Block Chevy Harmonic Balancer 8 Inch 454 502 (36.9% similar) Harmonic balance forged low carbon steel high viscosity silicone fluid filled 8 inch diameter externally balanced fits big block chevy engines 454-502 heavy duty design includes painted on timing marks item is new but missing the box and has a couple paint chips...(March 8th, 2025)
• Speedmaster Pce276.1132 Chevy Bbc 454 4340 Forged Steel St-4.500 8-counterweight Peformance Crankshaft (36.6% similar) Less rotational mass per counterweight, that's the best way to ensure an engine can rpm higher and faster safely but you only lighten a crank so much still be able balance your combination. These crankshafts also have a large radius on all journals for improved strength and wear resistance. Minimum ...(September 10th, 2025)
• Speedmaster Outlet 840136534952 Chevy Gm Ls 5.670 Inch 25 Underdrive Harmonic Balancer Damper Sfi 18.1 (29.5% similar) Chevy gm ls 5.670 25% under drive harmonic balance damper Sufi 18.1...(September 24th, 2025)
• Speedmaster Outlet 840136574408 Chevy Sbc 350 7.250 Inch Internal Sfi-rated Fluid Damper Harmonic Balancer (33.5% similar) Actual product may vary from the picture provided. Everyone starts with red status and can rise through bronze, silver, gold, platinum, black viburnum.: overview: item condition: open box.: for a full information, please see the original listing. Warranty, warranty is 12 months unless stated ...(October 22nd, 2025)
• Speedmaster Outlet 840136534792 Chevy Bbc 454 8.000 Inch External Balancer Fluid Damper Harmonic Sfi 18.1 (31.5% similar) Chevy BBC 454 8.000 external balance fluid damper harmonic Sufi 18.1...(October 22nd, 2025)