The Texas Speed High Inertia Hemi SFI Flexplate is the heavier-duty version of the Texas Speed 5.7L and 6.1L Hemi flexplate. It carries the same SFI 29.1 certification and cold-rolled chromoly construction, with a high inertia design that Texas Speed states is intended to maximize valvetrain efficiency on a Mopar Hemi engine. It suits modified Hemi cars and trucks with automatic transmissions.
The plate is internally balanced and uses the 8-bolt Hemi crankshaft pattern with a 131 tooth ring gear. The forged one-piece steel ring gear is double welded to the plate, the chromoly plate is .035" thicker than the factory part and a gold irradiate finish keeps rust off the plate inside the bellhousing. It is a direct bolt-on part sold as a single flexplate. The converter bolt pattern is 8 x 12.00".
Specifications
- Application: 5.7L and 6.1L Hemi
- Design: High inertia (Texas Speed states it is designed to maximize valvetrain efficiency)
- Material: Cold-rolled chromoly steel
- Crank bolt pattern: 8-bolt
- Ring gear: 131 tooth
- Balance: Internal
- Converter bolt pattern: 8 x 12.00"
- Certification: SFI 29.1
- Ring gear: Forged one-piece steel, double welded
- Thickness: .035" thicker than a stock flexplate
- Finish: Gold irradiate coating to resist rust
- Installation: Direct bolt-on
- Part number: TSP-37010 (Texas Speed 1837010)
FAQ
What engines does the Texas Speed high inertia Hemi flexplate fit?
Texas Speed lists it for the 5.7L and 6.1L Hemi with the 8-bolt crankshaft flange, found in 2003 and newer Chrysler, Dodge, Jeep and Ram vehicles with automatic transmissions.
What does high inertia mean on this flexplate?
A high inertia flexplate carries more rotating mass than a standard plate. Texas Speed states the design is intended to maximize valvetrain efficiency on the Hemi engine; detailed weight figures are not published on the Texas Speed page.
How is this different from the standard Texas Speed Hemi flexplate?
Both the standard TSP-34500 and this TSP-37010 are SFI 29.1 chromoly 8-bolt 131 tooth internally balanced plates with an 8 x 12.00" converter pattern. This version adds the high inertia design and is the higher priced of the two.
What converter bolt pattern does this Hemi flexplate use?
It is drilled for the 8 x 12.00" torque converter bolt pattern that matches the factory style 5.7L and 6.1L Hemi converter.
Is the high inertia Hemi flexplate SFI certified?
Yes. It is SFI 29.1 certified and built from cold-rolled chromoly steel .035" thicker than stock with a double welded forged one-piece ring gear and a gold irradiate anti-rust finish.
