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Speedway SBC Small Block Chevy 350 Cast Crankshaft, 3.48", Two-Piece Rear Main For Sale


Speedway SBC Small Block Chevy 350 Cast Crankshaft, 3.48
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Speedway SBC Small Block Chevy 350 Cast Crankshaft, 3.48", Two-Piece Rear Main:
$301.99

New high tech, internal balanced, fatigue resistant 80-60-06 cast steel crank with near forged endurance, Fits 1968 to 1985 350 engines with a two-piece rear main seal, All journals are ground and polished to exact tolerances, Superior quality stock replacement crank at terrific value, IMCA approved for Hobby Stock, Northern, and Southern Sport Mod (Drilled only on the first rod throw) Chevy SBC 350 Crankshaft, 2-Piece Main Sku # 91515350 Mfr. Part # 91515350 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.

  • IMCA southern sport mod legal (Drilled only on the first rod throw)
  • Angle oil shot holes 
  • Internal balanced to OE GM specs
Specs Stroke 3.480" Main Journal Style 350 mains Crankshaft Material Cast Steel Main Journal Diameter 2.449" Rod Journal Diameter 2.100" Rear Main Seal Style 2-piece Weight 50 lbs. MFG. Part # 91515350 Sold in Quantity Each Reviews If I needed a new crankshaft Rated by Cool Breeze on April 16, 2026

Summary: fit very well in my 350 4bolt block

Yes, I recommend this product.

I would bye this product again Rated by mow on February 26, 2026

Summary: Everything about the crankshaft was spot on!Every journal miked right on.

Yes, I recommend this product.

Great product Rated by Boog on October 28, 2025

Summary: Exactly what I wanted Well built crank Order was a few days late due to delivery company's but speedway refunded me my express shipping

Yes, I recommend this product.

As described online Rated by 85s on May 09, 2025

Summary: Great product fast shipping

Yes, I recommend this product.

Crank it up! Rated by Low Tony on March 16, 2025

Summary: Very nice machine work. I have been a machinist for decades and always appreciate good quality work.

Yes, I recommend this product.

Related Items / Suggested Parts Clevite M338 GM SBC P Series Standard Size Main Bearings SB Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod SB Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 5.7 Rod SB Chevy 350 Rotating Assembly, 0.150 In Solid Dome, 5.7 Rod Small Block Chevy 350 Rotating Assembly, .275 Inch Solid Dome, 5.7 Rod SB Chevy 350 Rotating Assembly, 0.465 In Hollow Dome, 5.7 Rod SB Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 6 Rod Street SB Chevy 350 Rotating Assembly, Dish Dome, 5.7 In Rod Premium Small Block Chevy Rotating Assembly, 350 Flat Top, 6 Inch Rods Premium SB Chevy Rotating Assembly, 350 .150 Dome, 6 In Rods Redline 80312 Engine Assembly Lube, 4 Oz. Clevite H-Series 1969-Up SBC Main Bearings and Rod 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.
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