The Texas Speed Signature Series Billet Flexplate is the top tier of the Texas Speed flexplate line for GM LS engines. It is machined from high-grade billet steel rather than stamped, carries an SFI 29.2 certification and is rated by Texas Speed for 2,000 horsepower, which puts it in the range of serious power adder and drag race LS builds where a stamped plate is no longer appropriate.
The plate uses the LS 6-bolt crankshaft pattern and a 168 tooth ring gear, and is internally balanced to match the LS crank. Texas Speed designed the billet construction to limit flex and distortion at the crank and converter interface so power is transmitted without the plate working under load. It is sold as a single flexplate; converter bolt pattern details are not published on the Texas Speed page, so confirm converter compatibility before ordering.
Specifications
- Application: GM LS Series engines with 6-bolt crankshaft flange
- Material: High-grade billet steel
- Certification: SFI 29.2
- Power rating: 2,000 horsepower (per Texas Speed)
- Ring gear: 168 tooth
- Balance: Internal
- Crank bolt pattern: 6-bolt
- Part number: TSP-FLX4627 (Texas Speed 2234627)
FAQ
What is the Texas Speed Signature Series billet flexplate rated for?
Texas Speed rates the Signature Series billet steel flexplate for 2,000 horsepower and it carries an SFI 29.2 certification, making it suited to high-horsepower LS drag and power adder builds.
What LS engines does the billet flexplate fit?
It is made for GM LS Series engines with the standard 6-bolt crankshaft flange, uses a 168 tooth ring gear and is internally balanced for the LS crank.
What is the difference between SFI 29.1 and SFI 29.2?
SFI 29.1 is the certification carried by stamped steel performance flexplates such as the other Texas Speed flexplates. SFI 29.2 is the higher specification applied to billet flexplates like this Signature Series part, and is required by some sanctioning bodies at quicker elapsed times.
Is this flexplate stamped or machined?
The Signature Series flexplate is machined from high-grade billet steel. Texas Speed chose billet construction to minimize flex and distortion at the crankshaft and converter under high load.
Which torque converter bolt pattern does the billet flexplate use?
Texas Speed's product page does not list the converter bolt pattern for this flexplate. Confirm the pattern against the torque converter being used before ordering, or contact BPS for help.
