TSP 454 CID Resleeved Gen 4 Long-Block

TSP 454 CID Resleeved Gen 4 Long-Block

**Power Bore Sleeves are not available below 4.07" bore size**

The Texas Speed & Performance Darton Sleeved Gen 4 Long-Block starts with a NEW Gen 4 aluminum block resleeved with Darton dry sleeves, fully machined and assembled in-house. Choose a 4.10" or 4.125" stroke crankshaft with 24X or 58X reluctor, and your preferred Wiseco 2618 forged piston bore size (4.005"–4.185"). For power-adder builds, we recommend keeping bore to 4.125" or smaller.

Key Features:

• NEW Darton sleeved Gen 4 aluminum block (higher strength, thicker sleeves)
• Wiseco 2618 forged pistons with lowered ring lands + Napier 2nd ring
• Choice of 4.10" or 4.125" stroke and 24X/58X reluctor
• Includes 12 quarts of break-in oil at no extra cost

Long-Block Includes (Installed):

• PRC 247cc cathedral-port heads w/ 2.12"/1.60" stainless valves + PRC dual spring kit w/ titanium retainers
• Your choice of TSP camshaft
• LS2/LS3/LS7-specific timing set
• Johnson 2110R lifters
• TSP hardened chromemoly pushrods
• ARP head bolts + GM MLS head gaskets
• TSP ported LS6 oil pump or GM dry-sump oil pump (C6 Z06/GS/ZR1 applications)
• Complete gaskets/bolts/seals package (lifter trays, retainer plate, timing cover, valley cover, oil pump O-ring, balancer bolt, oil pan gasket, water pump gaskets, rear main seal, front crank seal, dowel pins, and more)

Important Notes:

• For significant boost/nitrous (over 12 psi or a 200 HP shot), consider a 4.00" stroke build for a thicker piston crown
• Dry-sump crank option available for 2006+ Corvette Z06 / Grand Sport / ZR1 installs (dry-sump-specific oil pump and hardware included)
• Optional upgrade to 1/2" ARP head studs (includes machining)

CID reference: 4.185" x 4.125" = 454 CID (other bore/stroke combinations available).

Note: Turn-key options (oil pan, intake, throttle body, etc.) and additional upgrades are available. Verify head/intake style and dry-sump requirements prior to ordering.