SLP ZL402 Long-Block
SLP Performance Parts is no newcomer to the GM scene. The company starts with a brand new aluminum or iron GM block and from there builds a serious 402ci long-block. This sucker even includes "ZL402" emblems for the exterior of your ride! SLP also offers a 9.0:1 version for forced induction applications, as well as an "easy tune" version with a 51014 camshaft.
| COMPANY NAME | SLP Performance Parts, Inc. |
| BLOCK | LQ9, iron or LS2, aluminum |
| DISPLACEMENT | 402 ci (6.6L) |
| COMPRESSION RATIO | 11.0:1 |
| CRANKSHAFT | 4.00-inch, Eagle, 4340 forged |
| RODS | 6.125-inch, SLP by Manley, 4340 forged, H-beam |
| PISTONS | 4.000-inch, SLP by Manley, 2618 forged |
| RINGS | Fel Pro precision fit |
| ROD BEARINGS | Clevite |
| MAIN BEARINGS | Clevite |
| CAM BEARINGS | GM |
| BOLTS | ARP |
| HEADS | SLP / AFR 225cc |
| HEAD GASKETS | GM MLS |
| CAM | SLP by COMP Cams, hydraulic roller, .596/.596-inch lift, 250/246 duration at .050, 114 LSA |
| LIFTERS | GM |
| PUSHRODS | SLP by Manley, 4130 Chrome Moly |
| ROCKER ARMS | No |
| VALVESPRINGS | SLP/AFR, 1.290-inch double |
| INTAKE MANIFOLD | No |
| THROTTLE BODY | No |
| FUEL INJECTORS | No |
| MAF | No |
| WIRING HARNESS | No |
| PCM | No |
| CORE CHARGES | None |
| WARRANTY | 90 days |
| PRICE | starts at $7,495.95 |
Speed Inc. Sportsman 370 Boost Long-Block
Speed Inc., known to some as "LS1Speed," claims fame as the midwest's largest GM EFI Performance Shop. The company offers this Sportsman 370-inch Boost engine that has been tested and proven in the company's 8-second, 995 rwhp 2002 Z28. "It is a simple yet strong foundation for any turbo or supercharged combination," the company says. The long-block includes a double roller chain and high volume oil pump, among other goodies.
| COMPANY NAME | Speed Inc. |
| BLOCK | GM 6.0L, iron |
| DISPLACEMENT | 370 ci (6.1L) |
| COMPRESSION RATIO | 8.6:1 |
| CRANKSHAFT | 3.622-inch, GM, factory crank |
| RODS | 6.125-inch, Eagle, 3D |
| PISTONS | 4.030-inch, Diamond, forged |
| RINGS | Diamond Pro-Select |
| ROD BEARINGS | Not specified |
| MAIN BEARINGS | Not specified |
| CAM BEARINGS | Not specified |
| BOLTS | ARP |
| HEADS | AFR 225cc |
| HEAD GASKETS | MLS |
| CAM | Speed Inc., hydraulic roller, custom boost grind |
| LIFTERS | COMP Cams |
| PUSHRODS | COMP Cams, chromemoly |
| ROCKER ARMS | No |
| VALVESPRINGS | Not specified |
| INTAKE MANIFOLD | No |
| THROTTLE BODY | No |
| FUEL INJECTORS | No |
| MAF | No |
| WIRING HARNESS | No |
| PCM | No |
| CORE CHARGES | $275.00 on crankshaft |
| WARRANTY | None |
| PRICE | $6,999.99 |
| OTHER PACKAGES | Speed Inc. can build any LS-based Gen III/IV motor, naturally aspirated or for boost. |
Street & Performance LS7 Crate Engine
Street & Performance is a big name in EFI engine swaps into old-school musclecars, and offers crate engines for newer cars as well. The company's latest offering starts with the solid foundation of a GM LS7, adding accessories and dress-up goodies to suit a customer's wants and needs. The photo shows optional Vette/Camaro brackets.
| COMPANY NAME | Street & Performance |
| BLOCK | LS7, aluminum |
| DISPLACEMENT | 427 ci (7.0L) |
| COMPRESSION RATIO | 11.0:1 |
| CRANKSHAFT | 4.00-inch, GM, forged |
| RODS | 6.098-inch, GM, Titanium I-beam |
| PISTONS | 4.125-inch, GM, cast aluminum |
| RINGS | GM |
| ROD BEARINGS | GM |
| MAIN BEARINGS | GM |
| CAM BEARINGS | GM |
| BOLTS | GM |
| HEADS | GM, LS7 |
| HEAD GASKETS | GM |
| CAM | GM, hydraulic roller, .593/.588-inch lift, 211/230 duration at .050 |
| LIFTERS | GM |
| PUSHRODS | GM |
| ROCKER ARMS | GM, 1.8 ratio |
| VALVESPRINGS | GM |
| INTAKE MANIFOLD | GM, LS7 |
| THROTTLE BODY | 90mm, electronic |
| FUEL INJECTORS | Bosch, 40 lb/hr |
| MAF | Yes |
| WIRING HARNESS | Yes |
| PCM | Yes |
| CORE CHARGES | No |
| WARRANTY | Yes |
| PRICE | $13,695.00 |
| OTHER PACKAGES | The quoted price is for the crate engine only. Bracket and accessories prices will be determined by customer's application, i.e. what vehicle the engine is being put into and what the customer's needs are. Engine brackets, alternator, compressor, and power steering pump come in polished or chrome. Block can be polished or painted to customer specs. |