1978 OLDSMOBILE CUTLASS SUPREME Transmission & Drivetrain

Flywheel, Cast Iron, 168-Tooth, 30 lb., Internal Engine Balance, Chevy, Small Block, Each

Part Number: SUM-700080

4.64 out of 5 stars ( 11 )

Estimated Ship Date: Monday 1/26/2026

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Gear, Ring and Pinion, 3.73 Ratio, GM, 8.5 in/8.6 in., Set

Part Number: MGR-GM10-373

4.74 out of 5 stars ( 19 )

Estimated Ship Date: Monday 1/26/2026

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Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-411A

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/26/2026

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Transmission Dipstick, Braided Stainless Steel Tube, Flexible, Aluminum Handle, Firewall Mount, TH350, TH400, Each

Part Number: LOK-TD-3350400FM

4.68 out of 5 stars ( 88 )

Estimated Ship Date: Monday 1/26/2026

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Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85373

4.17 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/26/2026

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Automatic Transmission Kickdown Cable, Hi-Tech, Natural Braided Stainless Steel, Natural Aluminum Fittings, GM, TH350, Kit

Part Number: LOK-KD-2350HT

4.89 out of 5 stars ( 38 )

Estimated Ship Date: Monday 1/26/2026

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Ring and Pinion Gears, 3.42:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-342A

4.5 out of 5 stars ( 16 )

Estimated Ship Date: Monday 1/26/2026

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Ring and Pinion Gears, 4.56:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: MGR-GM10-456A

4.46 out of 5 stars ( 13 )

Estimated Ship Date: Monday 1/26/2026

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Transmission Dipstick, Braided Stainless Steel Housing, Black Handle, GM, TH350, TH400, Each

Part Number: LOK-XTD3350400FM

4.89 out of 5 stars ( 18 )

Estimated Ship Date: Monday 1/26/2026

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Ring and Pinion Gears, GM 7.5/7.625 in., 4.10:1 Ratio, 27-spline, Standard Rotation, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Olds, Pontiac, Set

Part Number: MGR-GM7-5-410A

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/26/2026

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Transmission Dipstick, Braided Stainless Steel, Natural, Firewall Mount, TH350, TH400, Each

Part Number: LOK-TD350400FM36

4.79 out of 5 stars ( 38 )

Estimated Ship Date: Monday 1/26/2026

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Throwout Bearing, Hydraulic, 1.375 in. Retainer Diameter, Lever Style Clutch, universal, Each

Part Number: RAM-78125HD

4.58 out of 5 stars ( 26 )

Estimated Ship Date: Monday 1/26/2026

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Transmission Pan, Stock, Aluminum, EDP Coated Black, GM TH350, Each

Part Number: MRG-9795BMRG

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/26/2026

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Flexplate; Performance, Neutral Balance, 168 Tooth, Chevy, V8, Each

Part Number: HAY-10-010

4.5 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/26/2026

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Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85342

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/26/2026

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Differential Cover, Aluminum, Black, Perfect Launch Logo, GM, 7.50 in., 10-Bolt, Each

Part Number: PRO-66667

4.58 out of 5 stars ( 33 )

Estimated Ship Date: Monday 1/26/2026

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Ring and Pinion Installation Kit, Rear, GM 8.5 in., 10-Bolt, GM, Kit

Part Number: ETN-K-GM8-5SR

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

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Automatic Transmission Kickdown Cable, Hi-Tech, Black Vinyl, Natural Aluminum Fittings, GM, TH350, Kit

Part Number: LOK-KD2350HTBLAC

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Monday 1/26/2026

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Automatic Transmission Kickdown Cable, Midnight Series Hi-Tech, Black Braided Stainless Steel, Black Aluminum Fittings, Trim To Fit, GM, TH350, Kit

Part Number: LOK-XKD-2350HT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/26/2026

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Automatic Transmission Pan, Deep, Aluminum, Natural, GM, TH350, Each

Part Number: TCI-328000

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Monday 1/26/2026

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Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75373OE

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/26/2026

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Ring and Pinion Installation Kit, Master Kit, GM, 8.5 in., Kit

Part Number: MGR-R10RMKT

4.5 out of 5 stars ( 16 )

Estimated Ship Date: Monday 1/26/2026

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885373

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/26/2026

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Transmission Dipstick, Braided Stainless Steel Housing, Black Handle, Chevy, TH350, TH400, Each

Part Number: LOK-XTD350400FM3

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/26/2026

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Flexplates, Gold Series, 166-tooth, External Engine Balance, Chromoly, SFI 29.1, THM350, THM400, 700-R4, Oldsmobile, Olds V8, Each

Part Number: PQX-1845505

Not Yet Reviewed

Estimated Ship Date: Monday 1/26/2026