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Jeep 4.0 Stroker Kits

STAGE 1 ROTATING ASSEMBLY 9.0:1C.R.

Sealed Power cast pistons #677AP
Perfect Circle Moly piston rings #40514CP
Brand New Scat 3.895” stroke, 9000 Series performance cast steel crankshaft. #9-4.2L-3895-2123
Reconditioned connecting rods with upgraded ARP bolts #4.2L-5.850”
Clevite rod bearings (all years) #CB960P
Clevite main bearings (1987-1990 #MS704P) (1991-UP #MS1947P)
$1049 USD | Buy Now

STAGE 2 ROTATING ASSEMBLY 9.25:1C.R.

Sealed power hypereutectic coated skirt pistons #H825CP
Perfect Circle Moly piston rings #40514CP
Brand New Scat 3.895” stroke,
9000 Series performance cast steel crankshaft. #9-4.2L-3895-2123
Reconditioned connecting rods with upgraded ARP bolts #4.2L-5.850”
Clevite rod bearings (all years) #CB960P
Clevite main bearings (1987-1990 #MS704P) (1991-UP #MS1947P)
$1109 USD | Buy Now

STAGE 3 ROTATING ASSEMBLY 9.6:1C.R.

Icon forged pistons #IC944
Perfect Circle Moly piston rings #40514CP
Brand New Scat 3.895” stroke, 9000 Series performance cast steel crankshaft. #9-4.2L-3895-2123
Reconditioned connecting rods with upgraded ARP bolts #4.0L-6.123”
Clevite rod bearings (all years) #CB960P
Clevite main bearings (1987-1990 #MS704P) (1991-UP #MS1947P)
$1299 USD | Buy Now
 
 

Add a Cam Kit

Choose between:

Stage 1 Performance Cam Kit | $327 USD

Duration 263/265. Includes: Camshaft, Lifters, Timing Set, Pushrods and Cambolt. This is the only kit that works with stock valve springs.

Stage 2 Performance Cam Kit | $458 USD

Duration 214/218 @ .050 lift. Includes: Camshaft, Lifters, Timing Set, Pushrods, Cambolt, Valve Springs, Retainers and Keepers.

Stage 3 Performance Cam Kit | $458 USD

Duration 272/280. Includes: Camshaft, Lifters, Timing Set, Pushrods, Cambolt, Valve Springs, Retainers and Keepers.

Add a HP Ported Head

Choose between:

Stage 2 Performance Head | $600 USD

Stage 3 Performance Head | $665 USD

$100 refundable core charge

Heads are shot peened, magnufluxed to check for cracks. Each receive a complete 3 angle valve job. Valve seats are opened up to accommodate large intake (2.0 in.) and exhaust valves (1.551 in.). Custom port work is then performed to help the engine breath better and to increase the power. The head is then assembled with the new oversize valves and performance valve keepers.

Jeep 4.0L Engine Spec Sheets

jeep 4.0 performance spec sheet

Find more info here. Or download the pdf