94Cobrakid16

i have aftermarket eagle rods and srp pistons and i was wondering how you know which way they go in, they have stamps on them but i have no idea which way they go into the cylinder. figured i would ask here, any info on it would be great

woodsy

just remember the tangs on the big end of the rod face the lifter bore on a ford. And you cant put the pistons on backwards knowingly, they only have 2 valve reliefs and those are up, towards the lifter valley.

mjr46

the radius faced side of the rod journel that goes around the crankshaft faces towards the sides of the crankshaft

thunderjet429

+1 mrj46.. if you look at the rod you will see one side of the rod has a chamfer cut into it.. that's the radius that side go's toward the crank throw. BUT wait what kind of crank and rods you running???? forged internals call for a different bearing so they do not contact the crank at the radius.

woodsy

not always true, for instance you can usually use a 1227p 2.100 bearing on a steel crank with a .125 radius or a cb634p for the small 331-347 stuff. The bearing is no narrow its miles away from the radius, other times you may need to run an H series.

tyler72

yeah, what he said. I just put my eagle rotating assembly together last week, and this is all correct! just be sure to use the correct bearings!

94Cobrakid16

thanks, i think i can figure it out now, they are eagle i beam for a 408w

94Cobrakid16

ok i looked at the rods today, and i couldnt figure out what the chamfer is, they looked identical on both sides, one side has stamped in it a 5 digit number, the other has s7 on the rod and 02 on the cap on every rod, so i dont think the numbers have anything to do with it, they are eagle cast i beams for a 408w. any help? i would like to get this thing together
Thanks!