Independent sourcing inquiries
PAC High Performance LS .550" Lift Springs (Replaced 12713265)
LS .550-inch lift spring set. Installed height and camshaft compatibility require verification.
Fitment, pricing and availability confirmed before ordering.
Texas Speed & Performance
- Supplier part number
- PAC-2568-16
- Sourced engine applications
- GM 4.8 LS, GM 5.3 LS, GM 6.0 LS, GM 6.2 LS
- Source checked
- 2026-11-07
A listed engine family is not a year/model guarantee. Cylinder heads, generation, VVT and supporting components must be reviewed for your exact engine.
Official supplier catalogs
Verified selection, checked November 7, 2026: 24 Texas Speed products, 94 option groups and 381 choices. This is not a full SKU import. Speedway blocked automated access; no Speedway products or options have been imported. Complete supplier catalogs and changing options need an approved feed or further verification.
Speedway Motors
Browse official LS catalogRequest any LS catalog part using its URL or part number. No imported fitment claims.
Texas Speed & Performance
Browse official engine catalogLS and Gen V LT are separate. HEMI 5.7/6.4 and Coyote Gen 3/4 branches are sourced; Coyote SKU/options are not yet imported.
Texas Speed engine catalog branches
- Gen III LS 4.8/5.3 ↗
- Gen III LS 6.0 branch ↗
- Gen IV LS 4.8/5.3 ↗
- Gen IV LS 6.0/6.2 ↗
- Gen V LT 5.3 — L83/L84/L82 ↗
- Gen V LT 6.2 — LT1/L86/L87 ↗
- 5.7 HEMI VVT ↗
- 5.7 HEMI non-VVT branch ↗
- 6.4 HEMI ↗
- Coyote Gen 3 ↗
- Coyote Gen 4 ↗
No sourced Texas Speed catalog branch for Ford 4.6, 5.4, 3.5 EcoBoost, 6.2 or Pentastar 3.6 was established. A customer inquiry is not a compatibility claim. LS7, unrelated HEMI 6.2 and other unsupported families are excluded.