GM 10L90E 10-Speed Performance Transmission Package for Gen V LT1 & LT4 Engines

Bowler Tru-Street 10L90E Transmission Package

Slip Yoke Tailhousing (2WD Only) — 4x4 option available, add $1,500

Designed for Gen V LT1 & LT4 engines only.

The Bowler Tru-Street 10L90E is a fully built 10-speed automatic transmission package engineered for high-performance GM Gen V applications. Rated for engines producing up to 650 ft-lbs of torque, this package includes everything needed for a complete installation.

Transmission Specs

• 10L90E Transmission with 1,800-stall lock-up converter
• Gear ratios: 4.70, 2.99, 2.15, 1.80, 1.52, 1.28, 1.00, .85, .69, .64
• Electronic speed output only
• Shift timing and firmness are pre-configured and cannot be altered

Compatibility Notes

• Gen V LT1 & LT4 engines only
• Compatible with the GM ZL1 PWM fuel pump (pump and pump drive module not included)
• Not compatible with GM PWM cooling fans — a Vintage Air or SPAL fan kit (such as from C&R Racing) with a PWM sensor adapter is required if PWM fans are needed
• Requires a GM Connect & Cruise ECM (not included) — specify LT1 or LT4 at time of order for correct TCM/harness configuration

What's Included

• 10L90E Transmission
• 1,800-stall lock-up torque converter
• OE flexplate & flexplate bolts
• Converter bolts
• Bellhousing-to-block bolts
• OE GM starter, starter bolts, starter cover/dust cover with bolts & starter pigtail
• Slip yoke
• TCM with wiring harness (specify LT1 or LT4 at time of order)
• External transmission cooler
• Cooler manifold
• Braided cooler line kit

Important Notes

• Does not include a driveshaft or crossmember
• 12-month limited/conditional warranty from date of purchase
• Please allow 4–6 weeks lead time on all custom automatic transmissions.