Product Summary

14" Outside Diameter, 168 Tooth Count, 1.1 SFI Rating

  • Fits Chevrolet applications
  • Center hole diameter 2.489 (2 pc rear main seal)
  • '400' balance
  • 168 tooth ring gear
  • Clutch bolt patterns: GM 10.5", 11" clutches with 11.625", 12.625" bolt circles 3/8-16 thread, Ford Long Style 11" clutches with 12.375" bolt circle, 3/8-16 thread
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Key Specs

MFG. Part #1523
Tooth Count168
SFI Rating1.1
Material TypeSteel
Engine BalanceExternal
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Need To Know

Quick and Easy Returns

Return Policy

Ram Clutches 1523 Details

RAM billet steel flywheels deliver the uncompromising performance and long term reliability required for modern street performance applications. Each flywheel is precision machined, surface ground, and dynamically balanced to exacting tolerances, ensuring a perfect fit right out of the box. The robust steel construction provides the ideal inertia for smooth launches and exceptional low speed drivability.

Designed for performance enthusiasts, engine builders, and swap specialists, RAM steel flywheels feature a serviceable ring gear and meet all SFI safety specifications. Application specific options support popular engine swap platforms—including LS, LT, Coyote, and Hemi—as well as Tremec transmission conversions. Whether upgrading for street performance, track use, or a custom build, RAM delivers the premium flywheel solution trusted by professionals. RAM billet steel flywheels are engineered and manufactured in the USA. When only the best will do- Choose RAM.

  • Fits Chevrolet applications
  • Center hole diameter 2.489 (2 pc rear main seal)
  • '400' balance
  • 168 tooth ring gear
  • Clutch bolt patterns: GM 10.5", 11" clutches with 11.625", 12.625" bolt circles 3/8-16 thread, Ford Long Style 11" clutches with 12.375" bolt circle, 3/8-16 thread
  • .865" thickness crank flange to friction surface
  • 33 pounds
  • Meets SFI 1.1 specifications
  • Made in the USA

Application

Chevrolet Pre-86 '400' Balance 168 Tooth

Warranty Information

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Speedway Motors cannot facilitate the return of defective Ram Automotive Co. products as they have requested to handle these directly with the consumer. For defective product support and Return Authorization, please contact Ram Automotive Co. at 1-803-788

Ram Clutches 1523 Specifications

KEY SPECS
MFG. Part #1523
BrandRam Clutches
Tooth Count168
SFI Rating1.1
Material TypeSteel
Engine BalanceExternal
GENERAL
Outside Diameter14"
Weight33 lbs.
Sold in QuantityEach
GTIN Code809009110655
Rear Main Seal Style2-piece
Flywheel MaterialBillet steel
Replaceable Friction SurfaceNo
Pressure Plate StyleBorg & Beck/Diaphragm/Long

Questions & Answers

1 Question1 Answer

Is the RAM 1523 flywheel ready to be installed as is or does machining need to be performed to be adequately balanced for the 400 ci externally balanced engine?

by deluxe

2 years ago

1 answer

1 of 1 questions shown

Fitment

  • 2-Piece Rear Main Chevy 400

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  • 2-Piece Rear Main Chevy 400

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