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Summit Racing™ SPC Engine Blocks

Summit Racing™ SPC Engine Blocks are aftermarket V8 Engine Blocks made for "Street, Performance, or Competition." These new clean sheet designed aftermarket blocks are cast in a modern state-of-the-art German foundry on brand new molds and machined in USA on modern high-speed machining centers that can hold the tightest of tolerances. Why start your engine build with a dirty, old, worn-out production block that needs hundreds or thousands of dollars of machine work--when you can start with a new heavy-duty casting full of high-performance features. We ship these blocks mostly finished but leave the cylinder bore .005" undersize, your machine shop will have to hone them for proper size. You can rest assured that you have a great foundation for your engine build. Check out the features below! Additional details: • Available Versions Include: GM Small Block, GM LS, GM Big Block (coming Soon,) Ford Windsor 5.0 and 351W • Cast in Germany at a Tier 1 OEM foundry • Made with class 35 Iron Alloy, Higher tensile strength and harder than competitors' class 30 • Machine-finished in USA on precision hi-speed machining centers- All dimensions are very accurate! • Priority main oiling systems & Siamese Cylinder bores • Blind head bolt holes • 4-bolt main caps, 180,00 PSI main bolts included

5.0 out of 5 stars ( 13 )

$3,399.99

ATK Marine Rebuilt Long Block Engines

ATK Marine Engines offers premium-quality rebuilt long block engines specifically for boating applications. These engines are designed to deliver maximum performance and long-term durability for your boat. Order the model recommended for your marine application. ATK Marine rebuilt engines include: * Special marine pistons and rings * Special marine camshaft * Marine gaskets * New intake and exhaust valves * New main, rod, and cam bearings * New valve lifters, rocker nuts, and swivels * Heavy-duty double roller timing chains * Cam sprocket * Crank gear * Freeze plugs

4.41 out of 5 stars ( 46 )

$2,642.99

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$4,405.99

ATK High Performance GM 383 Stage 1 Marine Long Block Crate Engines

Replace the tired small block in your boat with ATK High Performance GM 383 Stage 1 marine long block crate engines. They are built from the ground up with off-shore performance in mind. These hand-built and balanced engines utilize Vortec power and stroker torque to produce an awesome 345 hp and 445 ft.-lbs. of twist that will get you moving on the open water. Each engine features brass freeze plugs and corrosion-resistant marine gaskets to keep the engines healthy and reliable. ATK GM 383 Stage 1 Marine long block crate engines include: * Handpicked, remanufactured blocks * Dart Iron Vortec cylinder heads * Nodular steel crankshaft and 4340 I-beam connecting rods * Hypereutectic pistons * Hydraulic roller camshaft * Valve covers * Timing cover and timing set * Oil pan, pump, and pickup tube

5.0 out of 5 stars ( 5 )

$4,417.99

Eddie Marine EMI Thunder Exhaust System with Standard Risers

for SBC and BBC applications, these systems are equipped with standard cast aluminum short risers, and are direct replacements for many stock Mercruiser manifolds in Bravo and Alpha applications using exhaust selector systems or Merc "S" pipes. Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with a black Fusioncoat finish, with optional finish colors available. Choose the model recommended for your watercraft engine. Eddie Marine EMI Thunder systems include: * EMI exhaust manifolds * Aluminum risers * Bolts, exhaust and riser gaskets, fittings

Not Yet Reviewed

$2,399.95

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$2,938.95

Eddie Marine EMI Thunder Exhaust System with High Performance Risers

Their best performing system—Eddie Marine EMI Thunder exhaust systems with high performance risers. They feature Thunder manifolds with integral water-cooled exhaust dividers and large individual runners for maximum horsepower gains. They're topped with long stainless steel high-flow risers (a must with high performance camshafts to prevent reversion—water ingestion). Offered for SBC and BBC, these systems are direct replacements for many stock Mercruiser manifolds, and the risers are also available in a 3 in. taller version to replace Merc manifolds using a spacer. Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with a black Fusioncoat finish, with optional finish colors available. Eddie Marine EMI Thunder systems include: * EMI exhaust manifolds * Stainless steel risers * Bolts, exhaust and riser gaskets, fittings

Not Yet Reviewed

$3,354.95

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$3,974.95

Eddie Marine EMI Thunder Exhaust System with High Performance S-Pipe Risers

Eddie Marine EMI Thunder exhaust system with high performance "S" pipe risers offer the perfect solution for existing exhaust flow below swim steps. Featuring stainless steel high-flow risers, these EMI systems enable the exhaust to exit underwater at idle keeping them quiet when you want it most. Adjust the outlet position by changing the size of the exhaust hose connecting the riser with the exhaust bend. The 16 in. long risers are a must with high performance camshafts to prevent reversion (water ingestion). Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion and come standard with black Fusioncoat finish, with optional finish colors available. Eddie Marine EMI Thunder systems include: * EMI exhaust manifolds * Stainless steel risers * 80 degree bends * Bolts, exhaust and riser gaskets, fittings * 4 in. exhaust hose and clamps

Not Yet Reviewed

$4,304.95

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$4,798.95

Eddie Marine EMI Thunder Exhaust System for 496 Chevy with SS High Performance Dry Pipe Risers

Eddie Marine's EMI Thunder Exhaust System for 496 Chevy with SS high performance dry pipe risers offers the ultimate performance with 32 in. stainless steel risers. These long risers will keep the water and exhaust separated until the very end of the pipe. If reversion is an issue with your high performance application, these EMI Thunder systems are your solution. The risers extend through the transom of your boat and do not require exhaust hose or outlets. Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with black Fusioncoat finish, with optional finish colors available. Eddie Marine EMI Thunder Exhaust System for 496 Chevy with SS high performance dry pipe risers includes: * EMI exhaust manifolds * Stainless steel risers with 10mm Merc temp sensor bungs * Oil filter, accessory bracket, and Merc water drains * Bolts, exhaust and riser gaskets, fittings * Jumper hoses * Stainless steel transom mounting flanges and gaskets * 5-year warranty

Not Yet Reviewed

$4,594.95

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$4,619.95

Eddie Marine EMI Thunder Exhaust System for 496 Chevy with High Performance Risers

Eddie Marine's EMI Thunder Exhaust Systems for 496 Chevy with high performance risers is their best performing system yet! They feature Thunder manifolds with integral water-cooled exhaust dividers and large individual runners for maximum horsepower gains. They're topped with long stainless steel high-flow risers (a must with high performance camshafts to prevent reversion—water ingestion). These systems are direct replacements for many stock Mercruiser 496 manifolds, and the risers are also available in a 3 in. taller version to replace some Merc manifolds using a spacer. The Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with black Fusioncoat finish, with optional finish colors available. Eddie Marine Exhaust Systems for 496 Chevy with high performance risers include: * EMI exhaust manifolds * Stainless steel risers with 10mm Merc temp sensor bungs * Oil filter, accessory bracket, and Merc water drains * Bolts, exhaust and riser gaskets, fittings * Jumper hoses * 5-year warranty

Not Yet Reviewed

$4,501.95

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$4,526.95

Eddie Marine EMI Thunder Exhaust Manifolds

Eddie Marine EMI Thunder exhaust manifolds deliver exceptional performance at affordable prices. They're constructed from the highest strength 356 aluminum that is heat-treated to a T-6 condition after it is cast. The manifolds are then hardcoat anodized—a process that thickens and toughens the naturally occurring protective oxide in the aluminum—to prevent corrosion of all surfaces, including the internal water passages. EMI Thunder manifolds feature superior runner designs and port separation. They are available in a variety of Fusioncoat colors or highly polished (uncoated). Order the model recommended for your engine application.

Not Yet Reviewed

$2,159.95

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$2,191.95

Eddie Marine EMI Thunder Exhaust System with Silent Choice High Performance Risers

Eddie Marine EMI Thunder exhaust systems with Silent Choice high performance risers are designed to be used with EMI Silent Select, as well as Mercury Silent Choice and other aftermarket selector systems. These systems are offered for a variety of SBC and BBC, including 3 in. taller versions to replace Merc manifolds using a 3 in. riser spacer block. Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion and come standard with a black Fusioncoat finish, with optional finish colors available. Eddie Marine EMI Thunder systems include: * EMI exhaust manifolds * Stainless steel risers * Bolts, exhaust and riser gaskets, and fittings

Not Yet Reviewed

$3,354.95

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$3,856.95

Eddie Marine EMI Thunder Exhaust System with SS High Performance Dry Pipe Risers

Eddie Marine EMI Thunder exhaust systems with SS high performance dry pipe risers offer the ultimate performance with 32 in. stainless steel risers. These long risers will keep the water and exhaust separated until the very end of the pipe. If reversion is an issue with your high performance application, these EMI Thunder systems are your solution. The manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with a black Fusioncoat finish, with optional finish colors available. Order the model recommended for your watercraft engine. Eddie Marine EMI Thunder systems include: * EMI exhaust manifolds * Stainless steel risers

Not Yet Reviewed

$3,830.95

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$4,382.95

Eddie Marine Billet Aluminum K-Plane Trim Tabs

Eddie Marine billet aluminum K-plane trim tabs offer heavy-duty design and function, with extruded pivot hinge assemblies with Delrin bushings for smooth operation and extreme durability. These K-plane-style tabs also feature their own hardcoat anodized hydraulic cylinders. The trim tabs are manufactured from solid 6061 T-6 aluminum and undergo a 3-step coating process for extra-corrosion resistance; it starts with an initial military spec hardcoat anodize treatment, followed by two coats of Eddie Marine's high-strength, long-lasting Fusioncoat colors. Kits typically include: * High-pressure, high-speed Sea Star hydraulic pumps * Gloss black billet aluminum mounting brackets * Sealed relay boxes * Internal (24 in.) and external braided stainless steel/PTFE lines * Integrated through-the-transom stainless steel bulkhead fittings

Not Yet Reviewed

$3,839.95

Eddie Marine EMI Thunder Exhaust System for 496 Chevy with High Performance S-Pipe Risers

Eddie Marine's EMI Thunder Exhaust System for 496 Chevy with high performance S-pipe risers offers the perfect solution for existing exhaust flow below swim steps. Featuring stainless steel high-flow risers, these EMI systems enable the exhaust to exit underwater at idle—keeping them quiet when you want it most. Adjust the outlet position by changing the length of the exhaust hose connecting the riser with the exhaust bend. The 16 in. long risers are a must with high performance camshafts to prevent reversion (water ingestion). Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with black Fusioncoat finish, with optional finish colors available. Eddie Marine EMI Thunder System for 496 Chevy with high performance S-pipe risers include: * EMI exhaust manifolds * Stainless steel risers with 10mm Merc temp sensor bungs * Oil filter, accessory bracket, and Merc water drains * 80 degree bends * Bolts, exhaust and riser gaskets, fittings * 4 in. exhaust hose and clamps * Jumper hoses * 5-year warranty

Not Yet Reviewed

$4,781.95

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$4,798.95

Holley Gen 3 Ultra Dominator Marine Carburetors

Holley Gen 3 Ultra Dominator Marine carburetors are designed for use on marine high-horsepower engines. They utilize high-capacity fuel bowls with 20 percent more fuel capacity to eliminate starvation, an integrated fuel shelf to minimize fuel aeration, and internal baffling to control fuel slosh. The patent-pending Gen 3 main body is 5/16 in. taller than the previous generation, allowing for larger radius air entries—which are optimized using Computational Fluid Dynamics (CFD) software to deliver smoother flow into new fully machined, big bore venturi. Other features include all-aluminum construction, 12-hole billet booster inserts, fully tunable billet metering blocks, adjustable external linkage, throttle position sensor mounting points and knurled (hand-adjustable) curb idle screws. Each calibration has been dyno-tested to deliver proven performance! Additional features include: * Gray anodized finish with black anodized billet aluminum metering block and booster inserts * Fully machined from venturi throat to throttle bore for predictable and repeatable performance * Metering blocks feature true gasket sealing and fully adjustable emulsion bleeds, power valve channel restrictors, and idle feed restrictors * Dual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle * Clear sight windows on both sides of bowls for easy and safe fuel level adjustments * Built-in drain plug in front center of bowl provides easy access to empty contents of bowl * O-ringed inlet threads offer a large variety of plumbing options and can be plumbed from either side * Factory-ready TPS mounting points for use with data acquisition systems (Holley TPS part number 534-214 available) * Contoured hex head squirter screws for streamlined airflow * Fully adjustable stainless steel external linkage can be adjusted for 1:1 progressive or soft progressive throttle activation (no linkage parts under the carburetor) * J-style vent tubes * 100 percent wet-flow tested by Holley technicians to assure it arrives ready to run

Not Yet Reviewed

$2,049.95

Eddie Marine EMI Thunder 496 Chevy Exhaust Manifolds

Eddie Marine EMI Thunder 496 Chevy exhaust manifolds deliver exceptional performance at affordable prices. They're constructed from the highest strength 356 aluminum that is heat-treated to a T-6 condition after it is cast. The manifolds are then hardcoat anodized—a process that thickens and toughens the naturally occurring protective oxide in the aluminum—to prevent corrosion of all surfaces, including the internal water passages. (Polished manifolds have no corrosion-resistant coating.) Eddie Marine EMI Thunder 496 Chevy exhaust manifolds feature superior runner designs and port separation. They're available in a variety of Fusioncoat colors or highly polished (uncoated). Order the model recommended for your engine application. These Eddie Marine assemblies include: * EMI Thunder 496 Chevy exhaust manifolds * Oil filter, accessory bracket, and Merc water drains * Bolts, exhaust gaskets, and fittings * Jumper hoses

Not Yet Reviewed

$2,844.95

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$2,870.95

Eddie Marine EMI Thunder SS High Performance Dry Pipe Risers

Eddie Marine EMI Thunder SS high performance dry pipe risers are made from stainless steel and include stainless steel through-transom flange and gasket seals. Offering the ultimate in performance, Thunder dry tailpipe risers are 32 in. long and keep the water/exhaust separated until the very end of the pipes.

Not Yet Reviewed

$2,276.95

Eddie Marine EMI Thunder Exhaust System for 496 Chevy with +3 in. Taller High Performance Risers

Eddie Marine's EMI Thunder exhaust system for 496 Chevy with +3 in. taller high performance risers is their best performing system yet! They feature Thunder manifolds with integral water-cooled exhaust dividers and large individual runners for maximum horsepower gains. They're topped with long stainless steel high-flow risers (a must with high performance camshafts to prevent reversion—water ingestion). These systems are direct replacements for many stock Mercruiser 496 manifolds, and the risers are a 3 in. taller version to replace some Merc manifolds using a spacer. The Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with black Fusioncoat finish, with optional finish colors available. Eddie Marine Exhaust System for 496 Chevy with +3 in. taller high performance risers include: * EMI exhaust manifolds * Taller risers (+3 in.), stainless steel with 10mm Merc temp sensor bungs * Oil filter, accessory bracket, and Merc water drains * Bolts, exhaust and riser gaskets, fittings * Jumper hoses * 5-year warranty

Not Yet Reviewed

$4,199.95

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$4,229.95

Eddie Marine EMI Thunder Exhaust System for 496 Chevy with Silent Choice High Performance Risers

Eddie Marine EMI Thunder Exhaust Systems for 496 Chevy with Silent Choice high performance risers are designed to be used with EMI Silent Select, as well as Mercury Silent Choice and other aftermarket selector systems—or where a short riser is need for additional clearance. These systems are offered for Merc 496 Chevys, including 3 in. taller versions to replace some Merc manifolds using a 3 in. riser spacer block. This system is not recommended for use on engines with performance aftermarket camshafts. Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with black Fusioncoat finish, with optional finish colors available. Eddie Marine EMI Thunder System for 496 Chevy with Silent Choice high performance risers include: * EMI exhaust manifolds * Stainless steel risers with 10mm Merc temp sensor bungs * Oil filter, accessory bracket, and Merc water drains * Bolts, exhaust and riser gaskets, fittings * Jumper hoses * 5-year warranty

Not Yet Reviewed

$4,501.95

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$4,526.95

ATK High Performance GM 383 Stroker Marine Base Long Block Crate Engines

Want to get back on the water? Start your build with ATK High Performance GM 383 Stroker marine base long block crate engines. They'll help anyone looking to complete their build with reliable, on-water high performance. These base or Stage 1 engines produce great power throughout the entire power curve! Your ATK GM 383 Stroker marine base long block features: * Seasoned OE 4-bolt main, one-piece seal block * Nodular iron crankshaft * 4340 forged I-beam connecting rods * Hypereutectic dished pistons with 9.1:1 compression ratio * Hydraulic roller camshaft with 210/215 Duration @0.050, 0.462 In./0.470 Ex. Lift, 114LSA * ATK aluminum cylinder heads with 70cc/195cc port volume and 2.02/1.60 in. valves * Double roller timing chain * Brass freeze plugs * Rocker arms: stamped steel 1.5 ratio * 5 qt. oil pan * Standard volume oil pump

Not Yet Reviewed

$4,798.99

Eddie Marine EMI Thunder 496 Chevy SS High Performance Dry Pipe Risers

Eddie Marine EMI Thunder 496 Chevy SS high performance dry pipe risers are made from stainless steel. These tailpipe risers are 32 in. long and keep the water/exhaust separated until the very end of the pipes to prevent reversion. They're recommended for use on engines with aggressive aftermarket performance camshafts. The risers extend through the transom of your boat and do not require an exhaust tip and hose. They include integral 10mm bungs to accommodate Merc 496 water temp sensors. Eddie Marine EMI Thunder 496 Chevy SS high performance dry pipe risers include: * Stainless steel risers * Riser gaskets * Stainless steel transom mounting flanges and gaskets * Stainless steel mounting studs, nuts, and washers * Jumper hoses, clamps, and fittings

Not Yet Reviewed

$2,399.95

Eddie Marine EMI Thunder High Performance S-Pipe Risers

Eddie Marine EMI Thunder high performance S-pipe risers are made from stainless steel. They're designed as a solution for exiting exhaust below swim steps. Used with your EMI Thunder manifolds, these risers enable the exhaust to exit underwater at idles—keeping them quiet when you want it most. The risers' extended length design prevents reversion.

Not Yet Reviewed

$2,750.95

Eddie Marine EMI Thunder 496 Chevy High Performance S-Pipe Risers

Eddie Marine EMI Thunder 496 Chevy high performance S-pipe risers are made from stainless steel. They're designed as a solution for exiting exhaust below swim steps. Used with your EMI Thunder manifolds, these risers enable the exhaust to exit underwater at idles, keeping them quiet when you want it most. Their extended length design prevents reversion with most performance aftermarket camshafts. The risers have integral 10mm bungs to accommodate Merc 496 water temp sensors. Standard height and additional 3 in. height models are available. Eddie Marine EMI Thunder 496 Chevy high performance S-pipe risers include: * Stainless steel risers * Riser gaskets * 80 degree bends * Exhaust hose and clamps * Stainless steel mounting studs, nuts, and washers * Jumper hoses, clamps, and fittings

Not Yet Reviewed

$2,021.95

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$2,879.95

Chevrolet Performance 454 C.I.D. and 502 C.I.D. Forged Steel Crankshafts

These 454 c.i.d. and 502 c.i.d. forged steel crankshafts from Chevrolet Performance are designed for use in your LS-6 and LS-7 big-block V8s. Constructed of 1053 steel, they're nitride treated to increase hardness and fatigue strength. The main bearing journals are cross-drilled to provide a constant supply of oil to the rod bearings.

Not Yet Reviewed

$2,107.64

Diamond Pistons Marine Series Pistons

Diamond Pistons Marine Series pistons are ideal for your high-demand boats. These forged aluminum pistons are significantly stronger than the factory pistons allowing your engine to handle that extra horsepower, high-rpm operation and long hours on the water. Diamond Pistons Marine Series pistons feature: * 3D milling on piston crowns for "ready to install" finish * Moly skirt coating for friction-loss and skirt-wear protection * Oversized valve pockets for "larger than stock" valve sizes * Forged 2618 or 4032 aluminum alloy (where specified) * Premium 8620 or H-13 steel wrist pins (where specified)

Not Yet Reviewed

$2,586.97

Parts and Accessories