Spec Built LS

6.7L Long Block

6.7L Long Block

Regular price $6,999.00 USD
Regular price Sale price $6,999.00 USD
Sale Sold out
Quantity

6.0L block stroked to 408CI with 4.000 inch crank. Fully forged Texas Speed rotating assembly. Ready for Silverado, Sierra, Tahoe, or LS swap. Built for boost, nitrous, high HP.

WHAT'S INCLUDED:
- 6.0L Iron Block - cleaned, mag checked, bored 4.030, honed with torque plate, clearanced for 4.000 stroke, decked square
- Texas Speed 4.000" Forged Crankshaft - 4340
- Texas Speed Forged Rods - 6.125" - ARP 2000 bolts
- Texas Speed Forged Pistons - flat top / dished - file fit rings
- Clevite / King Bearings - main and rod - coated option available
- 317 / 799 / 243 / LS3 Heads available - surfaced, valve job, new valve seals
- NEW Cam Bearings + Freeze Plugs
- Professionally Assembled - torqued to spec - balanced

MACHINING DONE:
Hot tank and jet wash
Bore and hone to 4.030 with torque plate
Deck block square
Clearance for 4.000 stroke
Line hone checked
Surface heads
3-angle valve job
Full balanced rotating assembly included

SPECS:
Displacement: 408CI / 6.7L
Bore: 4.030 inch (4.000 block + .030)
Stroke: 4.000 inch
Compression: 9.5 to 11 to 1 depending on piston and head combo
HP Capable: 575-650HP
Warranty: 2 Year Workmanship

WHAT'S NOT INCLUDED:
Intake, injectors, oil pan, valve covers, accessories. Add with dropdowns below.

LEAD TIME: 3-4 weeks built to order - forged Texas Speed parts ordered per build. Not drop shipped.
Shipping freight LTL. Core $500 if no core in 30 days.

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