Originally Posted by gearheadslife
you link 2 if not three (2 threads on vid) of cast cranks.
that's not really fair, you buy junk you get breakage, both threads was cast cranks. not forgings
Not really fair? Sure thats your opinion I guess.
There are only 3 SBC engines that use forged cranks in the last 30 years.
1) 662hp/LS9(forged steel crank/forged pistons/forged titanium rods),
2)556hp Cadillac 6.2L LSA(forged steel crank/cast hyper pistons/forged PM rods,,
3)505 hp 7.0L LS7 forged 4140 steel crank/cast hyper pistons/forged steel titanium rods.
Using your logic, all aftermarket manufacturers that produce a cast crank will experience breakage, simply because it is made of metal that is cast in a casting, vs. being forged into shape?
I could have posted pages of issues with Eagle cranks.
Look at the 4340 forged unit, it was out 1-2 thou. from center to edge of the main bearing surface. Thats horrible, but typical of many products manufactured these days.