Eagle Ford 351W 4.000in Crank 6.250in H-Beam -20cc Inv Dome 4.040in Pistons Rotating Assembly
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Eagle Ford 351W 4.000in Crank 6.250in H-Beam -6.6cc Flat Top 4.125in Pistons Balanced Assembly
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Eagle Ford 351W 4.000in Crank 6.250in H-Beam -6.6cc Flat Top 4.125in Pistons Rotating Assembly
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Eagle Ford 351W 4.000in Crank 6.250in I-Beam Rods -20cc Inv Dome 4.040in Pistons Rotating Assembly
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Eagle Ford 351W 4.170 Stroke 2.100in Rod Journals Internal Balance Forged 4340 Steel Crankshaft
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Eagle Ford 351W 4.170in Crank 6.250in H-Beam -16cc 4.030in Pistons Balanced Assembly
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Eagle Ford 351W 4.170in Crank 6.250in H-Beam -16cc 4.030in Pistons Rotating Assembly
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Eagle Ford 351W 4.170in Crank 6.250in H-Beam -16cc 4.125in Pistons Rotating Assembly
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Eagle Ford 351W 4.170in Crank 6.250in H-Beam -6.6cc Flat Top 4.040in Pistons Balanced Assembly
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Eagle Ford 351W 4.170in Crank 6.250in H-Beam -6.6cc Flat Top 4.040in Pistons Rotating Assembly
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Eagle Ford 351W 408 Competition Rotating Assembly Kit
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Eagle Ford 351W 408 Stroker Rotating Assembly Kit
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Eagle Ford 351W 408 Stroker Rotating Assembly Kit
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Eagle Ford 351W Balanced Rotating Assembly Kit 164 Tooth Flex Plate
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Eagle Ford 351W Balanced Rotating Assembly with .040in Over Bore -26.0cc Dome
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Eagle Ford 351W Balanced Rotating Assembly with .040in Over Bore -5.0cc Dome
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Eagle Ford 351W Block 4.03in Bore 6.250in Rod Length 4.000in Stroke Rotating Assembly
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Eagle Ford 351W Block 6.250in Rod Length 4.000in Stroke Rotating Assembly
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Eagle Ford 351W Block Pro Street Rotating Assembly - 6.25in H-Beam +.030in Bore (Unbalanced)
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Eagle Ford 351W Block Pro Street Rotating Assembly - 6.25in I-Beam +.030in Bore (Unbalanced)
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About Pure Auto Performance
Pure Auto Performance started with a simple idea: helping people find quality parts they can trust without the stress and confusion that usually comes with upgrading a car. We’re enthusiasts just like you, and we know how much pride goes into every build. Whether it’s improving a daily driver or working on a long-term project, the right part can make your car feel brand new again. That’s why we put care into everything we offer, choosing products that genuinely make a difference on the road.
We also believe car parts should be more than just nice to look at they should last, perform well, and fit the vision each driver has. Some customers prefer clean, subtle upgrades, while others love bold changes that completely transform their vehicle. No matter the style, our goal is to make the process easy, honest, and enjoyable. At Pure Auto Performance, we’re here to support you at every step so you can build a car that feels right for you. This brand is more than a store. It’s a community of people who love driving and want the best for their cars.

