BlockDock™ Mopar Engine Stand Mount Adapter Plate, LA/B/RB/Hemi

#91000602

BlockDock™ Mopar Engine Stand Mount Adapter Plate, LA/B/RB/Hemi

Name: BlockDock™ Mopar Engine Stand Mount Adapter Plate, LA/B/RB/Hemi
Brand: Speedway Motors
SKU: 91000602
Price: 156.99 USD
Availability: InStock
Rating: 4.8 (8 reviews)

8 Reviews

2 Questions

BlockDock™ strong 1/2-inch thick billet aluminum adapter provides secure mounting of your Mopar small/big block or Hemi engine to your engine stand
Bellhousing bolt pattern provides exact fitment to LA and B/RB Mopar engines and can be used for both early or late Hemi mounting as well
SAE hardware with 1.8-inch thick spacers provided to mount adapter to Mopar engines with flexplate/flywheel in place

Engine Type:

Mopar - LA/B/RB/Hemi

GM - LS/SBC/BBCFord - SBF/Coyote

$156.99

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Product Summary

16.78" Overall Width, .500" Material Thickness, Natural

BlockDock™ strong 1/2-inch thick billet aluminum adapter provides secure mounting of your Mopar small/big block or Hemi engine to your engine stand
Bellhousing bolt pattern provides exact fitment to LA and B/RB Mopar engines and can be used for both early or late Hemi mounting as well
SAE hardware with 1.8-inch thick spacers provided to mount adapter to Mopar engines with flexplate/flywheel in place
Threaded holes on adapter allow for on board storage of fasteners and spacers to prevent loss
Designed to fit standard four ear adjustable engine stand heads (after removing adjustable ears)

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Key Specs

MFG. Part #	91000602
Material Type	Billet Aluminum
Finish	Natural
Color	Natural
Hardware Included	Yes

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Speedway Motors 91000602 Details

BlockDock™ adapter plates CNC machined from 1/2-inch thick 6061-T6511 billet aluminum plate for strength
Mounting pattern supports Mopar LA small block, B/RB big block, and Hemi engines
Includes tubular spacers for flexplate/flywheel clearance and mounting fasteners
Fastener storage provided right on the adapter, no more lost hardware
Works with most any standard “four point” engine stand
Provides stronger, more secure mounting of your engine to your stand
Takes the guesswork out of mounting your Mopar small or big block to an engine stand

Stop Fighting Your Engine Stand, Use Our BlockDock™ Adapter Plate to Make Mounting Your Mopar Small or Big Block Easy

If you’ve never had the fun of learning how to use an engine stand to mount a Mopar small block or big block engine, you’re in for some frustration. You see, the typical engine stand is universal in design with four adjustable mounting ears to attach the engine block to the stand’s rotating head. This allows an engine stand to work, theoretically, with any engine block, from an old truck inline six to that modern overhead cam engine you’re swapping into your hot rod. The issue is those four mounting ears don’t always line up the best with the engine’s bellhousing bolt pattern for a secure and safe mounting solution. Or it throws the engine off balance, making it hard to rotate on the stand. Lastly, we’re always wasting time trying to find the correct length engine stand bolts to secure the engine to the stand (because the factory bellhousing bolts are often too short).

Our solution to this common problem is a BlockDock™ billet CNC machined aluminum plate with the full Dodge/Chrysler/Plymouth bellhousing pattern machined into it along with slotted mounting points to mate up to the typical four mounting ear slots on an engine stand. This saves the expense of buying a specific LA small block, B/RB big block, or Hemi engine stand by making the universal one you already own work for these applications, including the modern Gen III Hemi. We include 1.8-inch long tubular spacers to provide clearance for an installed flexplate or flywheel, and we include all necessary bellhousing bolts for the plate to attach to your Mopar’s engine as well as to mount the adapter to your stand, after removal of the stand’s mounting ears.

Storage is provided right on the plate itself with threaded holes for your engine stand bolts, so you’ll never waste time looking for your Mopar engine stand bolts ever again. Your engine will be safer installed with our plate between your stand and engine block. No more flexing or bent engine stand ears, no more only using three of your stand’s mounting ears because you can’t get them all lined up to your block’s bolt holes, and no more of your engine being “top heavy” on the stand, making it almost impossible to turn over. Our BlockDock™ Mopar engine stand mounting plate solves all these problems, making your engine stand safer to use and more secure. So, once you’ve determined how to lift your engine for removal, our engine stand adapter will be ready to help you safely secure your Mopar engine to your engine stand.

Application

Mopar LA Engines

The LA (Lightweight A) engines were a series of small block V8 engines introduced in 1964. These engines were widely used in a variety of Chrysler, Dodge, and Plymouth vehicles. They are known for their lightweight design and were produced in various displacements:

273 cu in (4.5 L)
318 cu in (5.2 L)
340 cu in (5.6 L)
360 cu in (5.9 L)

Mopar B Engines

The B engines are a series of big block V8 engines introduced in 1958. These engines were commonly found in high-performance cars and trucks. Known for their durability and power, they were produced in several displacements:

350 cu in (5.7 L)
361 cu in (5.9 L)
383 cu in (6.3 L)
400 cu in (6.6 L)

Mopar RB Engines

The RB (Raised Block) engines are an extension of the B engine series, introduced to allow for larger displacements. The 440 engine, in particular, became famous for its high performance. They were produced in the following displacements:

383 cu in (6.3 L)
413 cu in (6.8 L)
426 cu in (7.0 L)
440 cu in (7.2 L)

Early and Late Hemi Engines

The early Hemi engines are perhaps the most iconic of Chrysler's engines, known for their hemispherical combustion chambers that improve airflow and combustion efficiency. Today's Gen III Hemi has become a popular swap option and both early and late Hemi engines are supported with this plate.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Speedway Motors 91000602 Specifications

KEY SPECS
MFG. Part #	91000602
Brand	Speedway Motors
Material Type	Billet Aluminum
Finish	Natural
Color	Natural
Hardware Included	Yes

GENERAL
Overall Width	16.78"
Material Thickness	.500"
Sold in Quantity	Each

Ratings & Reviews

4.8

8 Reviews

Overall Assessment

Customers appreciate the product for its fantastic quality and strength, specifically recommending it for safely and evenly balancing a hemi on a stand. Despite a minor compatibility issue with certain engine stands, customers expressed satisfaction, attributing the issue to engine stand's design rather than our product. The product fits perfectly in most cases, with the included hardware praised for facilitating an easy installation. The product continues to meet user expectations over time and has been endorsed for its excellent fit and ability to securely hold the engine block.

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4.8

8 reviews

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Wonderful product

5.0

11 months ago

Thousand Dent Demon

Indiana

Verified

I hate the arms on engine stands, especially when trying to hang big block Mopars. These plates make it so much easier to bolt an engine up. So good at the time of this writing 11/25/2025 I own two of them.

Would Recommend

I would buy this product again.

5.0

a year ago

Drag racer

Waimea, HI

Verified

Mopar engines, especially Hemi, are bulky. The adapter plate helps to center the load and makes rotation easier, and safer.

Would Recommend

Neat and Clean (mostly)

4.0

a year ago

Verified

Took out most of the guesswork in bolting up my gen III Hemi to the stand. The only quirk I found is one of the included spacers will need a small relief cut into it to clear the bell housing pin on the driver's side and they don't include nuts and washers for the lower-most bolts.

Would Recommend

Very good quality

5.0

a year ago

Chris

Oklahoma

Verified

Part is currently supporting my 440. Bolts directly up to your engine stand once you remove the universal arms. Only part missing from my box is 2 nutz for the 2 larger bolts

Would Recommend

Fantastic quality, excellent strength, not 100% universal

4.0

a year ago

Metalmanonline

Salt Lake City

Verified

Works perfectly except it doesn't 100% fit on my harbor freight engine stand as it is and would need a slight modification to work. It may be their stand and not this piece that is the issue, just something to consider for those purchasing it. Overall excellent quality and I would recommend to anyone looking for a safe and evenly balanced piece to bolt up a hemi on a stand.

Would Recommend

Engine adapter plate

5.0

a year ago

Matt

Redlands, CA

Verified

The adapter plate arrived quickly and was well packaged... the adapter fit my engine stand perfectly..the nice thing is the hardware included was long enough so installation was a snap..

Would Recommend

I will be using this again still using

5.0

a year ago

Mr. C

Alberton Mt.

Verified

The shipping was very fast. It fits great bolted right up

Would Recommend

I would buy this again if needed

5.0

a year ago

Creeker

Sandy creek ny

Verified

This piece is awesome fit the engine I bought it for. Made very well holds the block good. Would recommend this one to anyone.

Would Recommend

Showing 8 of 8 reviews

Questions & Answers

2 Questions • 2 Answers

Sort Questions

Is this a direct bolt up to Gen 1 392 Chrysler FirePower?

by Shane

• 4 months ago

1 answer

View Answer

Will this bolt to an early DeSoto Hemi ?

by Georhe

• 4 months ago

1 answer

View Answer

2 of 2 questions shown

Fitment

2005-2022 Chrysler 300

5.7 Chrysler Hemi V8

2007-2009 Chrysler Aspen

5.7 Chrysler Hemi V8

2009-2019 Dodge Challenger

5.7 Chrysler Hemi V8

2021-2022 Dodge Challenger

5.7 Chrysler Hemi V8

2006-2019 Dodge Charger

5.7 Chrysler Hemi V8

2021-2022 Dodge Charger

5.7 Chrysler Hemi V8

2004-2009 Dodge Durango

5.7 Chrysler Hemi V8

2011-2023 Dodge Durango

5.7 Chrysler Hemi V8

2005-2008 Dodge Magnum

5.7 Chrysler Hemi V8

2002-2010 Dodge Ram 1500

5.7 Chrysler Hemi V8

1994-2010 Dodge Ram 2500

5.7 Chrysler Hemi V8

1999-2000 Dodge Ram 2500 Van

5.7 Chrysler Hemi V8

2002-2003 Dodge Ram 2500 Van

5.7 Chrysler Hemi V8

1994-2010 Dodge Ram 3500

5.7 Chrysler Hemi V8

1999-2003 Dodge Ram 3500 Van

5.7 Chrysler Hemi V8

2006-2010 Jeep Commander

5.7 Chrysler Hemi V8

2005-2023 Jeep Grand Cherokee

5.7 Chrysler Hemi V8

2013-2014 Ram Ram Pickup

5.7 Chrysler Hemi V8

1952 Studebaker 2R14

5.7 Chrysler Hemi V8

1950 Studebaker 2R15

5.7 Chrysler Hemi V8

1953 Studebaker 2R15

5.7 Chrysler Hemi V8

1939 Studebaker Champion

5.7 Chrysler Hemi V8