Dodge 5.7 HEMI Flexplate Torque Specs Diagram
5.7 HEMI flexplate eight-bolt crisscross pattern with 137 N-m torque, new clamp ring, paint marks and high-output hardware split.
For the cited 2013 Ram 1500 5.7L HEMI, install the flexplate and a new clamp ring, align existing hub paint marks where applicable, hand-start the eight bolts and tighten them in a crisscross pattern to 137 N-m (100 lb-ft). The high-output branch also uses a friction shim and new factory-coated bolts that must not be lubricated.
The flywheel or flexplate is both a rotating engine component and the connection to the clutch or torque converter. Uneven seating at the crank flange can create runout, starter-ring-gear problems, vibration or bolt fatigue. For the 5.7L HEMI, the correct value is inseparable from crank flange, fastener, thread treatment and installed transmission hardware.
Ram's procedure requires a new clamp ring on both branches. The high-output stack adds a friction shim and new anti-scuff-coated bolts, so it must not be simplified into the standard arrangement.
The interactive pattern alternates across the bolt circle to draw the part onto the crank flange evenly. It is a tightening controller, not a claim that every engine carrying the same family name has the same bolt count. Compare the actual flange, service illustration and replacement-part instructions before applying torque.
Interactive 5.7L HEMI crank-flange sequence
STAR PATTERN
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A 8-fastener opposite-side controller. Select 1 through 8; the physical labels around the circle are 1-5-2-6-3-7-4-8. Confirm that the installed flange matches.
Dodge 5.7 Hemi Flexplate Torque Specs Diagram
| APPLICATION / ITEM | SPECIFICATION | NOTES |
|---|---|---|
| Final torque | 137 N-m / 100 lb-ft | Crisscross pattern |
| Clamp ring | Always replace | Any flexplate removal |
| HO bolts | New, pre-coated | Do not lubricate |
| HO stack | Friction shim + clamp ring | Application-specific |
Standard and high-output hardware stacks are shown separately by Ram. Identify the installed crank hub, clamp ring, friction shim and coated fasteners before assembly.
How to use this specification correctly
- 01
Confirm the engine code, crankshaft/rear-seal generation, transmission type, flywheel or flexplate part number, balance specification and fastener part number. Photograph orientation marks before removal.
- 02
Disconnect the battery and support the engine and transmission with rated equipment. A flywheel is heavy and a thin flexplate has sharp edges; use eye protection and a flywheel holding tool rather than hands or a screwdriver jammed into the ring gear.
- 03
Remove the clutch/torque-converter fasteners and transmission according to the vehicle manual. Mark converter depth before separation and keep the converter fully seated in the transmission pump.
- 04
Inspect the crank flange, register, bolt holes, rear seal, pilot bearing, ring gear and both faces of the flywheel/flexplate. Reject cracks, heat checking beyond limits, elongated holes, damaged teeth or an unapproved resurfaced thickness.
- 05
Clean mating faces so the part seats metal-to-metal. Keep oil, grease and threadlocker off friction surfaces. Chase threads only if the service procedure permits it and blow blind holes clear without spraying solvent into the engine.
- 06
Place the flexplate, correct shim if required and new clamp ring in documented order. Align paint marks and start all eight bolts finger tight.
- 07
Use the physical 1-5-2-6-3-7-4-8 opposite-side controller and finish at 137 N-m. Keep factory-coated HO bolts dry.
- 08
Install clutch, pressure plate or converter hardware only after the crank-flange joint is complete. Use alignment dowels and the separate pressure-plate/converter torque specification.
- 09
Measure flywheel/flexplate runout where the manual requires it and rotate the crankshaft by hand. Verify starter engagement, converter freedom/endplay and bellhousing alignment before final installation.
- 10
After startup, stop for scraping, cyclic knock or abnormal vibration. Recheck accessible converter/inspection-cover work only by the application procedure; do not casually retorque sealed crank bolts after operation.
Selecting the correct application branch
Ram's procedure requires a new clamp ring on both branches. The high-output stack adds a friction shim and new anti-scuff-coated bolts, so it must not be simplified into the standard arrangement.
Paint marks preserve the relationship to the crank hub where present. If marks were not made before removal, use the exact factory illustration and part identification rather than guessing.
How the opposite-side sequence works
With 8 matching fasteners, the controller's physical labels are 1-5-2-6-3-7-4-8 around the circle. Tighten numerically so each step crosses or moves far from the previous position. Start every bolt by hand before the first staged pass.
Use several even preliminary passes when the source gives only a final torque, unless its instructions say otherwise. The final wrench pass must still follow the exact application sequence and calibrated range.
Installation procedure and verification
Place the flexplate, correct shim if required and new clamp ring in documented order. Align paint marks and start all eight bolts finger tight.
Use the physical 1-5-2-6-3-7-4-8 opposite-side controller and finish at 137 N-m. Keep factory-coated HO bolts dry.
Mistakes that cause repeat failures
- Reusing the clamp ring
- Omitting the high-output friction shim
- Lubricating pre-coated bolts
- Installing the flexplate backward
- Pulling an unseated torque converter forward with flexplate bolts
Flywheel, flexplate and converter are separate joints
The crank bolts clamp the flywheel or flexplate to the crankshaft. Pressure-plate bolts clamp a clutch cover to a manual flywheel, while converter bolts connect an automatic flexplate to the torque converter. These fasteners commonly have different sizes, grades, thread treatments and torque values.
Never use the crank-flange torque for converter or pressure-plate bolts. Confirm converter seating before drawing the transmission to the engine; bellhousing bolts must not be used to force a gap closed.
Final installation checklist
- Correct balance and tooth count confirmed
- Orientation marks and crank register aligned
- New bolts/clamp ring used where required
- Mating faces clean and dry
- Specified thread treatment applied only to threads
- All bolts hand-started
- Staged opposite-side sequence completed
- Runout and pilot/bellhousing alignment checked
- Converter fully seated or clutch centered
- Engine rotates freely by hand
Dodge / Ram / Chrysler 5.7L HEMI specifications can change by model year, engine, platform, wheel, and installed component. Confirm the VIN or engine identity, part numbers, fastener condition, and the current manufacturer instructions before service.
Dodge 5.7 HEMI Flexplate Torque Specs Diagram FAQs
What is 5.7 HEMI flexplate torque?+
The cited 2013 Ram procedure specifies 137 N-m (100 lb-ft) in a crisscross pattern.
Can the HEMI flexplate clamp ring be reused?+
No. The cited Ram procedure says a new clamp ring must be used whenever the flexplate is removed.
Should flywheel bolts be tightened in a star pattern?+
Use the exact numbered factory figure when available. An opposite-side or crisscross staged pattern is the safe controller for a matching circular flange because it seats the part evenly.
Can flywheel bolts be reused?+
Only if the exact service manual and fastener instructions permit reuse. Torque-to-yield, coated single-use or damaged fasteners must be replaced.
Is flywheel bolt torque the same as converter bolt torque?+
No. They are separate joints with different fasteners and specifications.
Technical sources
TorqueSheet favors engine- and component-specific manufacturer instructions over unsourced universal values.
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