[quote=gregcharger72][quote=fastmark]
I had a speedpro forged piston/big rod combo internally balanced , it took very little standard weight slugs welded into existing holes to do it , why Chrysler thought they had to external balance these engines is beyond me.
 I had my old 440 (forged crank, 6 pack rods, Ross forged pistons) internally balanced when I put it in my dad's 4 speed car just to make things easier. It didn't take much to balance it internally.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
| 
