GM TH400 Transmission Heavy Duty Straight Cut Planetary Gear 2.10 - 1.40 Ratio Speedmaster C4 automatic transmission small

Speedmaster C4 automatic transmission small block to big block torque converter conversion plate

They feature extra-thick steel that's double-welded to the ring gear for added strength and anodized for corrosion resistance

allowing the air cleaner to sit low enough to shut the hood

Speedmaster ring and pinion preload spacer

This durable material is corrosion-resistant

GM TH400 Transmission Heavy Duty Straight Cut Planetary Gear 2.10 - 1.40 Ratio Speedmaster C4 automatic transmission smallSpeedmaster planetary gear sets are ideal for modern big displacement engines. Speedmaster only offers planetary gear sets which provide superior torque output for modern high output motors. This planetary gear is fully Rollerized!