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All blocks under go our exclusive “BLOCK BLUEPRINT” machine process which includes LINE HONE with new main bolts installed, bore & hone with our new SUNNEN SV-10 and CBN parallel surfacing of all cylinder decks. Rotating assembly is balance to .2 grams per inch ( NASCAR ) specs on our CWT 3000 engine balancer. TOTAL SEAL plasma moly rings, FM “A” series engine bearings and FORD COBRA oil pump completes the parts list. All parts are carefully inspected, checked for fitment and clearances verified PRIOR to assembly. POWERHEADS has more experience building modular engines than any other US company.

STAGE ONE
550 HP
GT BLOCK, NODULAR IRON CRANK, 5140 FORGED I BEAM RODS
PROBE “SRS” FORGED PISTONS, CUSTOM BALANCE AND ASSEMBLY
4.6 ( 281 ) = $3195
5.0 ( 302 ) = $3395

STAGE TWO
750 HP
4.6-5.4 IRON BLOCK, 4130 FORGED CRANK, 4340 FORGED H BEAM RODS
PROBE “SRS” FORGED PISTONS, CUSTOM BALANCE AND ASSEMBLY
4.6 ( 281 ) = $3650
5.0 ( 302 ) = $3995
5.4 ( 330 ) = $3995

STAGE THREE
1000 + HP
4.6-5.4 IRON BLOCK, 4130 FORGED CRANK, 4340 FORGED H BEAM RODS
DIAMOND PISTONS w/thermal coatings, FM HELLFIRE piston rings, ARP main studs, FM RACING engine bearings, MELLINGS HP BILLET oil pump. 3V OIL BAFFLE CONVERSION INSTALLATION
4.6 ( 281 ) = $4700
5.0 ( 302 ) = $5050
5.4 ( 330 ) = $5050

OPTIONS
4.6 aluminum block = $750, Mellings pump = $150, thermal coatings = $350, Hellfire rings = $125, ARP main studs = $165/$260, tool steel wrist pins = $90, 3V oil baffle conversion = $175

FORD RACING 3.70’’ BIG BORE SHORT DECK IRON BLOCK, POWERHEADS CUSTOM 3.75’’ FORGED STROKER CRANKSHAFT, 4340 FORGED H or I BEAM CONRODS, PROBE “SRS” 2618 FORGED PISTONS, TOTAL SEAL “PLASMA MOLY” RINGS, FM “A” SERIES ENGINE BEARINGS, COBRA OIL PUMP, CUSTOM BALANCE & ASSEMBLY.
 
STAGE TWO = $6400
STAGE THREE = $7400
FORD RACING ALUMINUM BIG BORE BLOCK ADD $2000

5.4 IRON BLOCK, POWERHEADS CUSTOM 4.380’’ FORGED STROKER CRANKSHAFT, 4340 FORGED H or I BEAM CONRODS, PROBE “SRS” 2618 FORGED PISTONS, TOTAL SEAL “PLASMA MOLY” RINGS, FM “A” SERIES ENGINE BEARINGS, COBRA OIL PUMP, CUSTOM BALANCE & ASSEMBLY.
 
STAGE TWO = $4695
STAGE THREE = $5695

SHM 3.70’’ BIG BORE TALL DECK ALUMINUM BLOCK, POWERHEADS CUSTOM 4.380’’ FORGED STROKER CRANKSHAFT, 4340 FORGED H or I BEAM CONRODS, DIAMOND CUSTOM PISTONS, TOTAL SEAL “PLASMA MOLY” RINGS, CUSTOM ENGINE BEARINGS, MELLINGS BILLET OIL PUMP, 3V OIL BAFFLE CONVERSION, CUSTOM BALANCE & ASSEMBLY.
 
COST = $8995
many options for this engine