If you're ready to start making some serious power — and we mean SERIOUS power, you've come to the right place. Whether you're looking for a turn key crate engine or you're looking to build from the ground up, we've got the parts you need. We carry everything from the oil pan to the valve covers and everything in between. So if you're in the market for a new set of heads or pistons, remember that no one gets you more power for your dollar than Speedway Motors.
"Engine, Cylinder Block Components" Page 1 of 22
$1,699.99More Info1939-53 Flathead Ford Rotating Assembly, 286 C.I.x
These 1939-53 flathead stroker kit rotating assemblies feature new Scat crankshafts, new Scat H-beam connecting rods with 2" journals, Ross forged three-ring pistons, rod bearings, and piston rings. The components are balanced and ready for you to assemble.
Main bearings sold separately. If you have a '39-'48 engine you will need a set of 9101535-STD main bearings. A '49-'53 engine will require a set of 9101536-STD main bearings.
$159.99More InfoSpeedway Chevy 350 Crankshaft, Two-Piece Mainx
New, hi-tech fatigue resistant 80-60-06 cast steel crank with near forged steel endurance. All journals are ground and polished to exacting tolerances. Superior quality stock replacement crank at a value price.
- IMCA southern sport mod legal (Drilled only on the first rod throw)
- Angle oil shot holes
$6.99More InfoSpeedway Small Block Chevy Crankshaft Wiperx
Removes excess oil from the crankshaft to improve top end horsepower and reduce windage. Fits Small Block Chevy. Mounts to the starter side of the block.
Slight trimming may be required. For best results, trim to within .045" of the rods and counterweights.
$64.99More InfoRings for Offenhauser 4-Ring Flathead Ford Pistons, 3.248 borex
The original bore size was 3.188", which makes these .060" oversize.
$54.99More InfoSpeedway Small Block Chevy Main Cap Studs, Set of 5x
Stock extended style main cap studs. Used to mount windage trays. Small Block Chevy. Set of 5.
$29.99More InfoManley 42171 Small Block Chevy Head Boltsx
Heavy duty design, longer than stock, for use with head bolt washers.
- 180,000 PSI material
- Longer than stock for use with washers
- Improved wrenchability with 1/2" hex head
Order one set per head (two sets required per motor). Washers sold separately.
$59.99More InfoMain Bearing Spacers - Small Block Chevy, 350 Crankx
Put a 350 crank in a 400 block. Simply snap in and install regular 350 main bearings. Reusable.
Spacer bearing makes up for difference in crank journal diameters.
$259.99More InfoSmall Block Chevy 4340 Steel H-Beam Rods, Bushed Pinx
Heavy duty H-beam connecting rods for S/B Chevy. Full floating wrist pin in silicon bronze bushing. Precision bolt bushing to positively locate cap. Features 8640 PCE 7/16" cap screws.
Weight matched sets of 8. Available in 5.7" or 6.0" lengths.
From: $84.99More Info1949-53 Ford Flathead Main Bearingsx
Please view the product's page for more information
$29.99More InfoARP Main Bolts for Flathead Ford V8x
Your flathead Ford V8 is how many years old now? And you're thinking about reusing the main cap bolts? Forget it!
Years of service and re-torquing have undoubtedly fatigued your engine's original fasteners, so save yourself some grief by replacing them with new main cap bolts from ARP, the leader in automotive fastener technology. Sold in sets of six, these bolts have special washers and the strength you need to keep that Flathead together for decades to come.
- The industry standard for automotive fasteners
- Rolled threads, black oxide finish, ultra high tensile strength
- Each kit consists of six (6) bolts and hardened washers
$369.99More InfoFlo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plugx
You don't sacrifice quality for a low price - get both with a Flo-Tek aluminum cylinder head. This Chevy aluminum head is loaded with high end features like bronze valve guides, multi angle valve job, and 3/8" screw-in rocker studs with guideplates. This is a pre-1986 design small block Chevy cylinder head with a standard exhaust port design. Heads are sold each.
- Head is sold individually
- 180cc intake runners
- 62cc exhaust runners
- 64cc combustion chambers
- 2.02" and 1.60" stainless steel valves
- High performance springs for .550" lift
- Compatible with most flat tappet camshafts
- Five angle valve job
- Bronze guides
- Straight plug
- 3/8" screw-in studs and guide plates
- Port for temperature probe
- Works well with most flat tappet street cams
- Valve Lift .400" .500" .600"
- Intake 206 237 244
- Exhaust 165 177 187
$24.99More InfoCylinder Head Chrome Acorn Nut Coversx
Snaps over the stock nuts your engine has already. Quick and easy to install for an immediate looks improvement. Perfect compliment to painted or polished cylinder heads or intakes.
$129.99More InfoFord 351W Steel Main Girdlex
Stock Ford small blocks don't have four bolt main caps so we recommend using our steel main girdle to increase the strength of the bottom end. Includes 5140 steel studs, nuts and spacers.
$19.99More InfoOffenhauser One-Piece Front Crank Oil Sealx
Replace those hokey pieces of rope with a seal that really works! Fits most 1928-1953 4 & 8 cylinder Fords (except V8-60s).
- Fits most 1928-1953 4 & 8 cylinder Fords (except V8-60s)
- Eliminate the leaky rope seal
560-56350 Instructions (PDF)
$79.99More InfoAluminum Crank Flange, Early Small Block Chevyx
Aluminum crank flange for Small Block Chevy early 2-piece rear main seal
- Early Small Block Chevy
- For 2-piece rear main seal
$49.99More Info1949-53 Ford Flathead Main Cap Supportx
If you're building a serious flathead for either street or racing, you need one of these flathead main cap supports. These supports include the support strap, spacers and new bolts for the center main cap. It adds an incredible amount of strength to the lower end. Can also be used on the front main cap but pan modification is required. Requires no machine work.
$13.99More Info1955-85 Small Block Chevy Balancing Platex
When running a 383 or 400 S/B Chevy with a 153 tooth flexplate or flywheel, you need to have a balancing plate. These fit between the crankshaft and flexplate and correctly balance the engine without resorting to a big heavy flywheel.
Lets you balance your Small Block Chevy 400 or 383 with a 350 flywheel (manual transmission flywheel or automatic transmission flex plate) and a bolt-on balancing plate. Road and race tested. Allows use of lighter 350 flywheel to rev quicker. Precision stamped steel.
916-15375 Instructions (PDF)
$9.99More InfoManley 42102 Head Bolt Washersx
These hardened steel 7/16" washers ensure proper torque readings. Pack of 34 pieces outfits one Small Block Chevy engine.
EngineQuest RSH350 1986 and Newer S/B Chevy Rear Main Seal Conversionx
Enables a rebuilder to install a 2-piece design crankshaft in a one-piece seal design block. Billet aluminum. Alignment tool required for installation. Uses a 1986 and later 1-pc rear main style oil pan and gasket.
$64.99More InfoProfessional Products 80010 Chevy 350 Lightweight Balancer, 6 Inchx
This 6" harmonic balancer fits 350 c.i. Small Block Chevys and only weighs 5.1 lbs. Plus, the balancing cut out is on the backside so they can't tell what crank you're running. Damper is a press-on fit.
- For internally balanced engines
- Durable nodular iron construction
- High temperature elastomer bond
- Engraved timing marks every 90°
- Includes 60° of easy-to-read timing marks
- Rated to 10,000 RPM
- NOT SFI approved
910-15363 Instructions (PDF)
Technical Notes (PDF)
$26.99More InfoARP Fasteners 234-2501 Small Block Chevy Balancer Bolt & Washerx
Made from 8740 chromoly. Bolt feature increased diameter for improved accessibility and easy wrenching. Hardened parallel ground washer prevents galling while promoting even torque loading. 170,000 PSI.
- For S/B Chevy
- UHL - 2.470"
- Thread Size - 7/16-20
- Wrenching - 13/16"
- Washer Included
$26.99More Info6 3/4 Inch Chevy Harmonic Balancer Coversx
6.75" Harmonic balancer covers for Small Block Chevys. Available blue, black, red, chrome or billet.
Hastings Rings SWY5075125 Flathead Ford 3-Ring Piston Set, 3.3125 Borex
Hastings is the ring of choice for your vintage flathead Ford V-8. We have these premium 3-ring sets with 5/64" cast top, 5/64" cast second, and 3/16" chrome-edge oil ring.
Each ring set includes all rings for (8) pistons.
$4.99More InfoChevy 283-350 V8 Steel Freeze Plug Setx
Complete freeze plug kits available in steel for 283-350 small block Chevy V8.
$14.99More InfoChevy 6-Cylinder Side Coversx
Chevy 6-Cylinder side covers. Chromed steel. 1963-1975 engines. Fits 194, 230, and 250. Does not fit 292.
Offenhauser 1939-53 Flathead Ford 4-Ring Pistons, 3.75 Stroke, 3.248 Borex
Original Flathead pistons used four rings, were somewhat round, had questionable wrist pins and locks and were made of cast iron. These pressure-cast aluminum pistons share the four-ring design, but are cam ground and use modern steel wrist pins and real snap rings. They’re a great upgrade when rebuilding your 1939-1953 flathead Ford or Mercury V8 engine.
The original bore size was 3.188", which makes these .060" oversize. Sold in sets of eight.
- Original 4-ring design
- Pressure cast aluminum construction provides great strength and durability
- Precision cam ground
- Modern steel wrist pins
- Snap ring style retainer clips
$1,544.99More InfoDart 31161211 Special High Performance Chevy Block, 4.125 Inch Borex
Dart's Special High Performance (SHP) small-block meets the need for an affordable, precision-machined cast-iron block with superior features. Designed for high-performance and heavy-duty applications producing up to 600 horsepower, the SHP block is the ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders, and high-performance marine enthusiasts. The SHP block as all the features needed without spending the big bucks and having to wait on your machine shop.
- All new, precision machined
- Cast from high nickel iron
- Priority main oiling system
- Siamese 4.125" bores
- At 4.165" bore, .230" wall thickness
- Clearance for 3.75" stroke w/ steel rods
- Decks parallel within .002"
- Made in USA
- Blind head bolt holes
- 350 main journals
- Splayed 4-bolt center main caps
- Two piece rear main seal
- Accepts OEM roller rockers and cams
- Uses 1981-85 oil pans & dipsticks
- Accepts standard starters and bellhousings
$94.99More Info1949-53 Ford Flathead Insert Rod Bearingsx
Speedway Motors has all the parts you need to rebuild your Flathead Ford V8, including these high quality aluminum bi-metal rod bearings. Precision built to the high standards demanded by today's rodders and restorers, these insert-style bearings are available in standard size, .010", .020", or .030" undersize.
- Tolerance Control: ± .0001" vs. the competitions' ± .00025"
- Superior Embedability: Material is much thicker than Babbitt overlays (.012" vs. .0008"). This provides greater macro-particle (> .0004" diameter) embedability. Macro particles are most responsible for scratching crank journals & tearing/weakening babbitt overlays.
- Temperature Threshold: Bi-metal withstands 662° F (350° C) compared to tri-metal 365° F (185° C). Affords greater protection against localized overheating due to misalignment, detonation, overloading, loss of coolant, etc.
- Conformability: Minimum depth of .012" enables greater adjustment to bore or journal misalignment without causing bearing failure or journal damage.
$74.99More InfoOffenhauser Flathead Ford Early to Late Drive Gearx
Allows the use of early ('32-'48) camshaft with late ('49-'53) timing cover.
$19.99More InfoARP Premium Rod Nuts for Flathead Ford V8x
Repeated torquing of your rod nuts fatigues the threads. Don't take a chance – replace your Flathead Ford V8's old fasteners with the superior strength and quality of ARP rod nuts. ARP specialty hardware can be found in NASCAR, NHRA and IndyCar racing applications, so you can be sure it's strong enough for your flathead.
- Rolled threads, high strength steel, and black oxide finish
- A must when you rebuild your Flathead
- Castle nut design may differ slightly in appearance from OEM
- Fits '32-'53 Ford/Mercury V-8 engines using standard 3/8" rod bolts
- Original flathead bolts are non-serviceable and must be reused
- Set/16 nuts
$99.99More InfoOffenhauser Flathead Cylinder Head Stud Kitx
Highly recommended for all 1939-53 Flathead Ford/Mercury with aluminum heads. Flathead decks are thin and their threads are easily stripped. The outer end of these Grade 8 studs have fine threads and with the hardened washers (included) which prevent galling and ensure accurate torque readings.
Full set of head studs, nuts and washers for one engine. Specify year of engine: 1939-48 or 1949-53.
560-13953 Instructions (PDF)
$19.99$24.99More InfoBlock Off Plate - 2006 to Present Yamaha R6 Enginex
Seal the void left by eliminating the emissions air pump when using carburetors on a 2006 to present year Yamaha R6 engine.
$22.99More Info2-In-1 S/B Chevy Engine Rotating Tool & Balancer Bolt/Washerx
This dual-purpose hardened steel tool serves a both a rotating tool and balancer retainer. It simply fits into the harmonic balancer on Small Block Chevys and provides a positive way of rotating the engine (in either direction) when setting valves, locating TDC or degreeing cam. It is permanently retained on the motor serving as a balancer washer/bolt assembly to retain the balancer/damper on the crank.
Tool has a 1-1/16" hex head. Instuctions included.
910-81020 Instructions (GIF)
$44.99$49.99More InfoCase Saver, 2003-2010 S Modelx
Don't risk engine damage with a derailed chain. High strength alloy Aluminum construction fits Yamaha R6 engines. Will accept up to a 15 tooth counter sprocket.
$749.99More InfoMAHLE Small Block Ford 347 Flattop Powerpak Pistonsx
The Mahle PowerPack Pistons are a race proven lightweight forged design that are complete with rings, wrist pins and locks. They are also completely phosphate coated plus feature an anti-friction Grafel skirt coating.
1.5mm, 1.5mm, 3.0mm file fit performance ring set is included.
- 347 uses .927" pin
- Comp Height: 1.090 (includes oil support rails)
- Pin Diameter: 0.927
- Clearance Guide
- *Meas. = 0.500
- Min = 0.0025
- Max = 0.0033
*The location to measure piston-to-wall clearance for each application. This point is calculated from the bottom of the piston skirt and indicates the widest part of the piston and thus where to measure.
PowerPak Piston Chart (GIF)
$49.99More InfoProform 67571 Piston Install Toolx
$1,299.99More InfoSpeedway Small Block Ford 396 Stroker Kits, H-Beam Rodsx
These rotating assemblies are designed for either street or race use and include Keith Black hypereutectic pistons, H-beam rods, and a Scat cast steel crankshaft.
- Scat Cast Steel 3.85" stroker crank
- 80-60-06 cast steel construction
- Fits early and late blocks
- Scat 4340 H-beam connecting rods
- 5.955" length
- .912" pin
- Bronze bushings
- ARP bolts
- Keith Black Hypereutectic Dish Pistons
- T6 heat treated construction
- Available in .030" or .040" oversizes
- Clevite main and rod bearings
NOTE: Piston rings (Style A rings) are not included and must be purchased separately.
Due to the many variations in balancers and flywheels, Speedway Motors does not offer balancing services on any Ford crankshafts or rotating assemblies.
- Scat Cast Steel 3.85" stroker crank
$1.99$3.99More InfoGarage SaleGarage Sale - ARP Chevy 350 3/8 Inch Rod Boltsx
ARP single rod bolts for small block Chevy 350. These rod bolts were made in the USA.
NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS
$179.99More InfoScat 9-10442 Chevy 350 Crankshaft, Cast Steelx
Scat's hi-tech, fatigue resistant 80-60-06 cast steel cranks have near forged steel endurance at a value price! Designed to replace stock cranks that have seen better days. Perfect for stock or mildly built engines.
- For 2-piece rear main blocks
- Precision ground and micro polished
- Internally Balance
- IMCA southern sport mod legal (Drilled only on the first rod throw)
- Angle oil shot holes