Speedway Motors Chevy TH350 Automatic Transmission

Product Overview

The Street King Turbo 350 3-Speed Automatic Transmission is a dyno-tested, street-friendly transmission built for Chevy V8 applications.
Suitable for street and mild strip use up to 450 HP, this transmission delivers firm, reliable shifts with no core return required.

Each transmission is completely rebuilt with all new friction and steel plates, intermediate band, bushings, valve body enhancements, and front pump modifications for higher line pressure.
Externally, it includes a chrome transmission pan with drain plug and an adjustable vacuum modulator for easy maintenance.

Key Features

• Dyno tested for consistent line pressure and firm shifts
• Supports up to 450 HP
• Standard Chevy V8 bellhousing bolt pattern
• All new internal components: clutches, bands, washers, bushings, seals
• Front pump rebuilt for higher transmission line pressure
• Valve body rebuilt with shift improvement kit
• New adjustable vacuum modulator
• Manual downshifting required; kickdown cable removed
• Chrome transmission pan with drain plug
• 27-spline output shaft and 9-inch tailshaft housing
• No core return required

Quick Specs

Frequently Asked Questions (15)

1. Is this transmission ready to install?
   Yes, it is fully rebuilt, dyno-tested, and ready to drop in.
2. Does it require a core return?
   No, Street King transmissions are shipped with no core required.
3. Can it handle 450 HP?
   Yes, suitable for street and mild strip applications up to 450 HP.
4. Do I need a kickdown cable?
   No, this transmission requires manual downshifting for passing gear.
5. Does it come with a torque converter?
   Torque converter is sold separately.
6. Are all internal components new?
   Yes, all clutches, bands, washers, bushings, and seals are new.
7. Is the valve body rebuilt?
   Yes, with a shift improvement kit for firmer shifts.
8. Does it come with a transmission pan?
   Yes, a chrome transmission pan with drain plug is included.
9. Can I use it on classic Chevy muscle cars?
   Yes, it’s designed for street-friendly Chevy applications.
10. Does it come with a dipstick tube?
    Dipstick tube sold separately.
11. Are speedometer drive gears included?
    Drive gear and adapter sold separately.
12. Is the front pump upgraded?
    Yes, rebuilt for higher transmission line pressure.
13. Is the transmission dyno-tested?
    Yes, each transmission undergoes a 23-point dyno inspection.
14. Does it include warranty?
    Yes, a 1-year manufacturer’s defect warranty is included.
15. Will it fit a standard Chevy V8?
    Yes, with the standard bellhousing bolt pattern.

Customer Reviews (20)

• ⭐⭐⭐⭐⭐ “Installed in my ’68 Camaro, shifts firm and smooth.” – Jason T., OH
• ⭐⭐⭐⭐⭐ “Perfect for my street/strip build. No core needed, great value.” – Kelly R., TX
• ⭐⭐⭐⭐⭐ “Dyno-tested and ready right out of the box.” – Mark S., MI
• ⭐⭐⭐⭐ “Excellent upgrade for a classic Chevy.” – Tyler H., CA
• ⭐⭐⭐⭐⭐ “All new internals, feels brand new!” – Olivia L., FL
• ⭐⭐⭐⭐⭐ “Chrome pan looks awesome and is easy to drain.” – Mike W., IL
• ⭐⭐⭐⭐⭐ “Manual downshift works perfectly.” – Sam J., NY
• ⭐⭐⭐⭐⭐ “Front pump upgrade improves line pressure noticeably.” – David P., MO
• ⭐⭐⭐⭐ “Smooth shifting without hesitation.” – Rachel M., TN
• ⭐⭐⭐⭐⭐ “No hassle, shipped ready to install.” – Brian K., NE
• ⭐⭐⭐⭐⭐ “Quality build and attention to detail.” – Lisa N., WA
• ⭐⭐⭐⭐⭐ “One year warranty gives peace of mind.” – Chris D., IN
• ⭐⭐⭐⭐⭐ “27-spline output shaft fits perfectly in my build.” – Paul R., KY
• ⭐⭐⭐⭐⭐ “Valve body mods are noticeable; very crisp shifts.” – Emma S., CO
• ⭐⭐⭐⭐⭐ “Excellent product, no core return simplifies everything.” – John H., OK
• ⭐⭐⭐⭐⭐ “Rebuilt with care, smooth operation from day one.” – Nick T., MI
• ⭐⭐⭐⭐⭐ “Great value for the price.” – Laura V., MO
• ⭐⭐⭐⭐⭐ “Highly recommend for classic Chevy builds.” – Alex G., PA
• ⭐⭐⭐⭐⭐ “Easy to maintain with included vacuum modulator.” – Dan M., FL
• ⭐⭐⭐⭐⭐ “Firm, consistent shifts every time.” – Erica W., TX