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> Remanufactured Long Block AMC 258 4.2L Straight 6 1972-1988
Remanufactured Long Block AMC 258 4.2L Straight 6 1972-1988
Remanufactured Long Block AMC 258 4.2L Straight 6 1972-1988
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Price
Your Price:
$2,962.00
Free Shipping.
Part Number:
AMC-258LB
Choose Options
Year / Make / Model / VIN
Year / Make / Model / Vin All Required Here:
Year
Year
1972-1974 [+$150.00]
1975-1980
1975-1980 AMC Eagle
1981-1988
1987-1990 XJ
Camshaft
Camshaft
Stock Camshaft
RV Style Camshaft with 4.2L Cylinder Head [+$100.00]
RV Style Camshaft with 4.0L Cylinder Head [+$245.00]
Cylinder Head Style
Cylinder Head Style
Stock 258 4.2L Cylinder Head
4.0L Cylinder Head (Increased Power and allows Fuel Injection) [+$325.00]
Port & Polish Head
Port & Polish Head
No
Yes [+$450.00]
Balance Rotating Assembly
Balance Rotating Assembly
No
Yes, I'll send in my Flexplate and Balancer [+$200.00]
Yes, Add a Flexplate and Balancer [+$400.00]
Engine Color
Engine Color
AMC Blue [+$25.00]
Black
Red [+$25.00]
Gray
Liftgate on Delivery?
Liftgate on Delivery?
No
Yes [+$225.00]
Core Charge (Same Cubic Inch Core To Be Returned)
Core Charge (Same Cubic Inch Core To Be Returned)
Send An Engine and I'll Send Mine Back (Core Charge) [+$650.00]
Pick Mine Up To Be Built (No Core Charge)
Engine Warranty Selection
Engine Warranty Selection
Standard Warranty (click ? symbol above for details)
Premium Warranty (click ? symbol above for details) [+$280.00]
Engine Build Time Frame
Engine Build Time Frame is approximately 15 weeks. Clicking this checkbox indicates you understand and approve the time frame.
Quantity
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Description
Customer Reviews
Questions and Answers
Remanufactured, NOT rebuilt. And yes there is a difference, a big difference. Unlike many of the products out there, S&J engines are not simply taken apart and rebuilt. They are painstakingly inspected, piece by piece, element by element and each component is given new life. And rather than expect yesterday's equipment to keep up with today's tougher engine tolerances, S&J uses the latest in engine technology, tools, and expertise to transform your engine. S&J continually upgrades its equipment and training to ensure the engines we produce today are equal to or better than the original. When you purchase your engine from S&J Engines you receive the highest quality remanufactured engine available from the most committed engine supplier in existence. When it is possible to do it better, they will.
In order to activate your engine warranty, S&J Engines, Inc. must receive a completed Warranty Form within sixty (60) days of receipt of purchase. Failure to complete the verification process renders your warranty null and void. To view warranty requirements and conditions, click
HERE
.
**Note: sometimes we have engines that are already built / ready to ship that are painted grey. If the color you select is different, we will include a can of paint in the color you select.
**RV Cam Note: if you select the 4.0L Cylinder Head Upgrade, the RV Style Camshaft for that head is more expensive as it includes a different RV Style Camshaft than the 4.2L head uses, and also utilizes upgraded upgraded springs.
Image is for illustrative purposes only, and may vary from actual engine.
**CORE REFUND NOTE:
All cores must be received back within 5 months in order to receive a core refund to your original payment method. After 5 months, core refunds are only available as store credit (no exceptions). Also, all cores must be in good, rebuildable condition. Any cores that have damaged / non-usable parts may incur charges (which will be deducted from the core return value). Engines that are 0.060 or over are not rebuildable, and will not receive a core refund.
View all Q&A
Q:
How do I arrange return of my core engine? Does the free shipping include this cost? If not, approximately how much are shipping costs from Ohio? Thank you
Asked by:
Kurt
- 6/15/2018
A:
when the core is ready, you simply contact us or the remanufacturer and they will schedule the pick-up of the engine. Yes, free shipping does include pickup and delivery within the lower 48 USA (note that liftgate fees are not included, should you require one).
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Answer provided by:
Ryan (6/18/2018)
Q:
Which one will be the casting number for the 4.0 head conversion? Can you provide a valve cover (not plastic) for this application? Thanks!
Asked by:
Josh Cedeno
- 4/2/2017
A:
I will have to verify with the builder, as we don't have a listing of the casting numbers. You can email
[email protected]
for further details. As for the valve cover, we don't currently list the 4.0L style but we should be able to provide various styles.
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2 of 3
Customer(s) found this Answer helpful.
Answer provided by:
Ryan (4/2/2017)
Q:
Hi, does this engine fit a 1987 jeep wrangler YJ? If not do you have one? Thanx shane
Asked by:
Shane
- 4/4/2018
A:
Yes, but we need to know how many bolt holes are in your valve cover.
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2 of 2
Customer(s) found this Answer helpful.
Answer provided by:
Ryan (4/9/2018)
Q:
Will this fit into a 1990 Wrangler YJ?
Asked by:
Glenn Rajotte
- 10/11/2017
A:
Yes, we can provide one to fit that application.
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1 of 1
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Answer provided by:
Ryan (10/12/2017)
Q:
WILL THIS FIT A '74 SCOUT II?
Asked by:
MIKE
- 4/4/2018
A:
Yes, International used AMC engines and these will fit.
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1 of 1
Customer(s) found this Answer helpful.
Answer provided by:
Ryan (4/9/2018)
Q:
What are the spec for an rv cam? .. difference in horse power approx between cam and rv cam .. for 1980 amc eagle engine? thank you
Asked by:
Bob
- 2/21/2020
A:
Cam Lift .280/.280, Valve lift .420/.420, Adv Duration 280/280, Dur @.050 208/208, Lobe center 110/114. The horsepower gain is around 12-15hp.
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1 of 1
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Answer provided by:
Ryan (2/24/2020)
Q:
I have a 1980 Jeep CJ5 4.2L. VIN#JOM83AC716344 I am looking for a long block for it?
Asked by:
Phil
- 6/4/2018
A:
Yes, we have them for that application!
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Answer provided by:
Ryan (6/5/2018)
Q:
I have a 88 Wrangler with 4.2, wanting to know if this will fit mine, how fast could I get one? thanks
Asked by:
Steve
- 10/29/2018
A:
Yes, you just need to determine if you have the 7 bolt style or the 16 bolt style valve cover. Typically we have a core in stock, but you can always call us to confirm as it can change daily.
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Answer provided by:
Ryan (10/29/2018)
Q:
I have an 83 CJ 7, this should bolt right up correct? Also, I currently have the 7 bolt valve cover, can I reuse it on this application if I opt for the 4.0 cylinder head? And can I reuse my original intake/exhaust manifold on the 4.0 head? (I'm running a Holley Snifer EFI set up right now)
Asked by:
william
- 1/31/2019
A:
Yes, it'll be a bolt-in for your application. No, when using the 4.0L head, they use a different valve cover, intake and exhaust, so you'll need to source used ones or aftermarket ones.
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Answer provided by:
Ryan (2/4/2019)
Q:
do you have this engine in stock I have 1989 wrangler need motor will this fit? what kind of warranty how much is core charge and shipping who remanufactures your engines and what kind of luck have you had with this company. thank You Mel
Asked by:
Mel
- 2/5/2019
A:
stock varies daily (call us to check stock on any given day). Yes, it will fit. The warranty is 7 year / 100,000 mile. The core charge is listed on the product page in the pull down menu. Shipping is free in the lower 48 (noted on the product page). They are remanufactured by S&J Engines, and we have had great success with their engines.
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Answer provided by:
Ryan (2/6/2019)
Fits:
1972-1983 Wagoneer
Fits:
1972-1988 J-truck
Fits:
1974-1983 Cherokee
Fits:
1984-1988 Grand Wagoneer
7-Year/100,000 mile warranty - Not Pro-Rated
Guaranteed to meet or exceed the OEM quality and specifications
Installed precision milled cylinder heads
Installed Valve train: new valves (stainless exhaust & plated intake valves), new valve seals, new valve seating
Leak tested Heads & Block
New Main Bearings
New Oil Pump
New Pistons
New Rod Bearings
New Seals & Gaskets
New Timing Chain
Break-In Oil Included
Ships via Ground from Spokane, WA
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