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Holley Level 3 LS Engine Swap Kits
Not Yet Reviewed
More product features, items, and specifications include:
* Emphasis is on fitment, clearance, and driveline angles aimed at reducing the classic LS-swap trial-and-error that wastes time and money
* Engineered around your specific platform/transmission combo for confident fitment, clearance, and proper driveline geometry
* Level 3 kits commonly build on the early tiers by including oil pan provisions and headers/manifolds components, all selected to work together as a system
* Kits are configured by vehicle platform and transmission selection
* Emissions and legality vary by location and vehicle; verify requirements for your intended use
Engine Swap Kit, Level 3, Mtr Mnts, Trans Mnt, Oil Pan, Headers, Buick, Chevy, GMC, Olds, Pontiac, LS, 4L60-85E, 6L80E, 8L45, 10L80, TH400/2004R, Kit
Part Number: HLY-SE3GMGLSXA
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Lvl 3, Mtr Mnts, Trans Mnt, Oil Pan, Headers, Buick, Chevy, GMC, Olds, Pontiac, LS, 4L60/65/70/75/80/85-E, TH400/2004R, T-56/Mag, Kit
Part Number: HLY-SE3GMALSXAM
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Lvl 3, Mtr Mnts, Trans Mnt, Oil Pan, Headers, Buick, Chevy, GMC, Olds, Pontiac, LS, 4L60/65/70/75/80/85-E, TH400/2004R, T-56/Mag, Kit
Part Number: HLY-SE3GMALSXFAM
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Buick, Chevy, GMC, Olds, Pontiac, LS, T-56/Magnum, TKX, Kit
Part Number: HLY-SE3GMGLSXM
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, GMC, LS, T-56 Magnum, Kit
Part Number: HLY-S0056
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, GMC, LS, 4L80-E, 4L85-E, Kit
Part Number: HLY-S0055
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, Pontiac, LS, 4L80/85-E, TH400/700-R4, T-56/Magnum, Kit
Part Number: HLY-S0057
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, GMC, LS, 4L60-E, 6L80-E, Kit
Part Number: HLY-S0054
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan, Headers, Chevy, GMC, LS, 4L60-E, 4L70-E, 4L75-E, TH400, T-56, T-56 Mag, Kit
Part Number: HLY-SE3GM2SLSXAM
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, Pontiac, LS, Powerglide, TH350, TH700-R4, Kit
Part Number: HLY-SE3GM2SLSXA1
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, GMC, LS, 4L80-E, Kit
Part Number: HLY-SE3GM2SLSXA2
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mnts, Trans Mnt, Oil Pan, Headers, Buick, Chevy, Olds, Pontiac, LS, 4L60/65/70/75-E, PG, TH350/400/200-4R/700-R4, Kit
Part Number: HLY-SE3GM1FLSXA2
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, GMC, LS, Powerglide, TH350, TH700-R4, Kit
Part Number: HLY-SE3GM1SLSXA
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, GMC, LS, 4L60/70/75-E,, TH400, T-56, T-56 Magnum, Kit
Part Number: HLY-SE3GM1SLSXAM
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Buick, Chevy, Oldsmobile, Pontiac, LS, T-56, T-56 Magnum, Kit
Part Number: HLY-SE3GM1FLSXM
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Chevy, Pontiac, LS, 4L60-E, 4L65-E, 4L70-E, 4L75-E, Kit
Part Number: HLY-SE3GM2FELSXA
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
Engine Swap Kit, Level 3, Motor Mounts, Trans Mount, Crossmember, Oil Pan Kit, Headers, Buick, Chevy, Oldsmobile, Pontiac, LS, 4L80-E, 4L85-E, Kit
Part Number: HLY-SE3GM1FLSXA1
Not Yet Reviewed
Estimated Ship Date: Nov 19, 2026 if ordered today
Estimated Ship Date: Nov 19, 2026 if ordered today
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