99T 5.5″ Aluminum Bellhousing Kits


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Tilton 99T 5.5 Aluminum Bellhousing Kits were engineered specifically to meets the demands of short track racing.  The lightweight and rigid aluminum bellhousing provides maximum ground clearance and features an easy access side-bolt mounting system for the starter.  Unlike other bellhousings on the market, the transmission no longer has to be removed in order to service the starter.  The value-packed Sport 5.5 clutch and small diameter 99-tooth cover-mount ring gear provides an ultra-low inertia and maximum reliability.  Since 1972, Tilton has been supplying championship winning parts to racers and these 99T 5.5 Aluminum Bellhousing Kits are destined to become the new standard in short track racing.

Typical Applications

  • Late Model
  • Super Late Model
  • Asphalt Modified

99T 5.5″ Aluminum Bellhousing Kits include:


  • Aluminum rear-mount starter bellhousing designed for maximum weight savings
  • Compact design provides increase ground clearance and exhaust header clearance. Distance from centerline of crankshaft to bottom of bellhousing is only 4.5”
  • Integral mounting ears for use as rear engine mount
  • Accepts transmissions with Chevy 4-bolt mounting pattern and 4.68” register diameter
  • Blueprinted for parallelism and concentricity
  • Weighs 11.4 lbs

Clutch-Flywheel Assembly

  • Sport 5.5 metallic clutch. 2-disc and 3-disc options
  • Billet steel 99-tooth (8.42”) ring gear
  • Button Flywheel
  • 26-Spline clutch disc pack
  • Aircraft-grade clutch bolts
  • High-strength ARP flywheel bolts

Hydraulic Release Bearing

  • 2300-Series hydraulic release bearing
  • 38mm contact diameter bearing
  • 3-bolt bellhousing mounted

Super Starter

  • 40000-Series 3.0HP high-torque gear reduction mini starter
  • Rear-mounts on bellhousing
  • Side-bolt mounting design provides secure mounting to bellhousing and easy access for service
Includes: bellhousing, flywheel, clutch, disc pack, hydraulic release bearing, Super Starter and related hardware.

 DescriptionPart Number
Chevy EarlySport 5.5 2-disc52-71120
Sport 5.5 3-disc52-71130
Chevy CrateSport 5.5 2-disc52-74120
Sport 5.5 3-disc52-74130
Chevy LSSport 5.5 2-disc52-73120
Sport 5.5 3-disc52-73130
Ford Small BlockSport 5.5 2-disc52-72120
Sport 5.5 3-disc52-72130

*For use with 1/4″ mid-plate between engine and bellhousing, such as Asphalt Modifieds.

Note: All packages are designed for use with transmissions that have a Chevy bolt pattern and a 1 5/32″ X 26 spline input shaft.

DescriptionPart Number
Chevy, aluminum52-671
Ford, aluminum52-672
DescriptionPart Number
Button flywheel, Chevy Early19002
Button flywheel, Chevy Crate, balanced19023
Button flywheel, Chevy LS19044
Button flywheel, Ford Small Block19045
Ring gear, 99-tooth51-099-4
Ring gear spacer, ULTRA 5.5 2-disc51-001
Clutches and Disc Packs
DescriptionPart Number
Sport 5.5, 2-disc metallic67-902HG
Disc pack, 2 discs, 26 spline64140-1-AA-36
Sport 5.5, 3-disc metallic67-903HG
Disc pack, 3 disc, 26-spline64140-1-ABA-36
Hydraulic Release Bearing
ClutchPart Number
HRB, Sport 5.5 2-disc clutch60-2340
HRB, Sport 5.5 3-disc clutch60-2310
HRB Sport 5.5 3-disc clutch, ¼” mid-plate appl60-2341
Super Starter
DescriptionsPart Number
Super Starter, bellhousing mount54-41072
Bolt Kits
DescriptionsPart Number
Clutch bolt kit95-036
Clutch bolt kit, ¼” mid-plate appl95-069
Flywheel bolt kit, all except Chevy LS95-952-6
Flywheel bolt kit, Chevy LS95-940-6