When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Features a new hi-tech fatigue resistant 80-60-06 cast steel construction for improved durability and long-lasting performance, All journals are ground and polished to exacting tolerances, Superior quality stock replacement crank at a value price, For blocks with 2-piece rear main seals, External balance Speedway 400 Chevy Crankshaft, Two-Piece Main Sku # 91515400 Mfr. Part # 91515400 Condition New Brand Speedway Motors Sold Each Details
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.
For blocks with 2-piece rear main seals. External balance.
Item Details
NOTE: Cut for a 5.7 rod and will NOT fit stock 5.565 rod.
Specs Stroke 3.750" Main Journal Style 400 mains Crankshaft Material Cast Steel Main Journal Diameter 2.648" Rod Journal Diameter 2.100" Rear Main Seal Style 2-piece Connecting Rod Length 5.700" MFG. Part # 91515400 Sold in Quantity Each Reviews I would buy the product again and again Rated by Rc on February 26, 2026
Summary: The price is the best
Yes, I recommend this product.
I would buy agin if need Rated by Anthony Ashley on March 21, 2025
Summary: Product came in great shape even box was in good shape and received it fast
Yes, I recommend this product.
Nice crankshaft Rated by Bob on May 22, 2024
Summary: This crank was shipped quickly Outer box was destroyed due to poor packing between the two boxes. Crank was ok. Was straight and true and balanced fine with no Mallory. Measured ok.Nice Crank
Yes, I recommend this product.
Yes Rated by None on February 27, 2024
Summary: Waiting for engine to come back from the machine shop, I can't wait
Yes, I recommend this product.
I will buy a 2nd. One as backup. Rated by Randall on August 24, 2023
Summary: Nice piece. So far I have made around 75-80 passes. 6.20's at 110mph. S10 truck.
Yes, I recommend this product.
Related Items / Suggested Parts King MB 509HP HP Series Chevy 400 Large Journal Main Bearings King CR807HPN-STD HP Series SBC Large Journal Rod Bearings, Std. Clevite M578 P-Series SBC 400 Main Bearings, Standard SB Chevy Rotating Assembly, 400 Flat Top-2 Valve Relief, 5.7 Rod Street SB Chevy 400 Rotating Assembly, Dish Piston, 5.7 In Rod Street Small Block Chevy 400 Rotating Assembly, Dish, 6 Inch Rod Redline 80312 Engine Assembly Lube, 4 Oz. King MB 509HP HP Series Chevy 400 Large Journal Main Bearings King HP Series 69-Up SBC Large Journal Connecting Rod Bearings King MB 509XP XP Series Chevy 400 Large Journal Main Bearings Scat 940050 400 Chevy Crankshaft Clevite M578 P-Series Small Block Chevy 400 Main Bearings Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.