rod question..

[Squirell]

say your building a 383......does the cubic inch change with rod length or just the placement in the piston.
thanks. ex- 5.7 or 6.0 or 6.125 rod. i know changin the stroke of the crank changes the displacement. just wondered about rod length.

[RIP_K52007]

I dont think so cause no matter how long the rod is its only gonna go as far up n down as the crank will let it in the cylinder. Hopefully you dont laugh as much reading that as I did typing it.

[Squirell]

yea kinda what i thought to....just thought i would ask someone who actually knows, but thanks

[hot rod heep]

no rod lingth  dos not change  the displicement    it only changes the pin plicement in the piston   [ longer rod  higher in the piston ]

[KORNBREAD]

no rod lingth  dos not change  the displicement    it only changes the pin plicement in the piston   [ longer rod  higher in the piston ]

x2

[J.C.]

changes the compression height, which is the placement of the rod in the piston

http://www.lunatipower.com/Tech/Pistons/CompressionHeight.aspx

[bigmud44]

does not change displacement but does change rod to stroke ratio which can make HUGE difference in some engines

[Jjay78]

it doesn't change displacement, but the longer rods with the longer strokes in the small blocks causes problems with your rings, i would NOT recomend going longer than a 5.7 inch rod with more than a 3.48 inch stroke, unless you like your wrist pins scratching at the back side of your oil ring pack......