What cubic inch is a 390 bored 30 over?
The 390, with 389.6 cu in (6.4 L) true displacement, had a bore of 4.05 inches (102.87 mm) and stroke of 3.78 inches (96.01 mm).
How big is a 350 bored 60 over?
Discussion in ‘ High Performance Modifications ‘ started by ZZTOP, Jun 18, 2008 . If you bore a 350 60 over what cubic inch would you have at that point.. also would there be any over heating issues with using a 4 core rad.. Thanks I think it would be a 360. .030-355 .040-357 I THINK. My engine is a stroker bored .060″ over.
What was the true displacement of a 390 CI?
The 390, with 389.6 cu in (6.4 L) true displacement, had a bore of 4.05 inches (102.87 mm) and stroke of 3.78 inches (96.01 mm). To get the 389.6 number using this formula: If the bore (diameter) is 4.05″, the radius (half the diameter) is 2.025″. The area of the piston is pi* (2.025^2), or 12.88 square inches.
How big is a boring 0.030 over engine?
Boring 0.030 over increases the diameter of each cylinder to 4.08″, and the radius to 2.04″. The area of the piston is now 13.07 square inches.
How many cubic inches do you get from an overbore?
That sound about right….but just for the record .030 does not automaticaly equal 6 cubic inches on all engines, that’s just what it comes up to starting with a 440 or (439.6) to be exact, A .030 would be less than 6 on a smaller engine and a little more on a larger one. Location: IN.
Discussion in ‘ High Performance Modifications ‘ started by ZZTOP, Jun 18, 2008 . If you bore a 350 60 over what cubic inch would you have at that point.. also would there be any over heating issues with using a 4 core rad.. Thanks I think it would be a 360. .030-355 .040-357 I THINK. My engine is a stroker bored .060″ over.
The 390, with 389.6 cu in (6.4 L) true displacement, had a bore of 4.05 inches (102.87 mm) and stroke of 3.78 inches (96.01 mm). To get the 389.6 number using this formula: If the bore (diameter) is 4.05″, the radius (half the diameter) is 2.025″. The area of the piston is pi* (2.025^2), or 12.88 square inches.
Boring 0.030 over increases the diameter of each cylinder to 4.08″, and the radius to 2.04″. The area of the piston is now 13.07 square inches.
That sound about right….but just for the record .030 does not automaticaly equal 6 cubic inches on all engines, that’s just what it comes up to starting with a 440 or (439.6) to be exact, A .030 would be less than 6 on a smaller engine and a little more on a larger one. Location: IN.