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Charts & Guides for Part Number SUM-BBC540STD
Summit Racing™ Forged Pro Pistons
Forged Pro pistons BB Chevy 540, 4.500 bore, 1.270 C.H., 4.25 in. stroke, 6.385 in. rod, 8cc open/closed ch. Dome 10.6@110cc, 10.2@114cc, 10:1@119cc.
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Estimated Ship Date: Dec 16, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
SUM-BBC540STD
Part Type:
Product Line:
Summit Racing Part Number:
SUM-BBC540STD
UPC:
190861283930
Piston Rings Included:
No
Bore (in.):
4.500 in.
Bore (mm):
114.300mm
Stroke:
4.250 in.
Engine Stroke Type:
Stroked
Rod Length:
6.385 in.
Piston Style:
Dome, with single valve relief
Piston Material:
Forged aluminum
Compression Height (in.):
1.270 in.
Piston Head Volume (cc):
-8.00cc
Wrist Pin Style:
Press-fit or floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.990 in.
Piston Ring Thickness:
1.50mm x 1.50mm x 3.00mm
File Fit:
No
Gapless:
No
Remanufactured:
No
Quantity:
Sold as a set of 8.
Notes:
Made from 2618 aluminum. Designed for SUM-85454500 Gas Nitride S or SUM-GP450015 Gas Ported File-Fit Rings.
Summit Racing™ Forged Pro Pistons
Summit Racing™ Forged Pro Pistons brings modern engine piston technology to older engine platforms at the great value. Why use an antiquated piston designed fifty years ago in your new build?
A great piston starts with a great forging. Forged Pro piston forgings are stronger AND lighter. This makes more power AND takes stress off the crank, rods and block at higher rpm. It also saves money balancing a crank when heavy metal is not required.
Forged Pro pistons are designed around ultra-modern Nitride Steel top ring packs and Summit GP Gas Ported variants. Less friction results in more power and less bore wear. Superior machining results in less blowby for less oil consumption and longer life is the result. Better rings are great horsepower per dollar!
Most old production engines were designed to run on 87 octane in heavy vehicles. If you're building a performance engine, chances are you're running it on 91+ octane and you might as well add a little pop. Forged Pro pistons yield an extra 1/2 point of compression in most instances. This is free power from idle on up for the life of the engine!
Forged Pro pistons have extra thick ring lands for moderate boost and nitrous. Special care has been taken to deburr critical areas for more strength and less chance of detonation. Special skirt profiles are designed to run at tighter clearances than other forged pistons for less piston rock. This helps them make more power, run quieter and last longer than other forged pistons.
Make your build run with the best of them!
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