03 vs 01 cobra crankshaft

[Sonic Blue L]

are they the same?

 

[CY98Cobra]

Yep. Cobra crank has been the same forged unit since 96.

 

[Sonic Blue L]

so basically if the crankshaft is the exact same one, then no balancing changes were made when ford switched to h beam rods?

 

[RacerW]

Sonic Blue, the cranks are the same but you should make sure the bob weights are the same. If they are then it will not cause any vibration, but I would double check it.

 

[ShelbyGuy]

of course its balanced differently for the heavier rods.

but if you're having your reciprocating assembly balanced anyway (eg., rebuilding/overhauling) then its a non-issue, except the cost of the mallory metal which should be negligible anyway. only time i heard of people being charged for mallory metal was when they were converting an externally balanced crankshaft to internal balance (eg., 428 ford)

 

[JB]

of course its balanced differently for the heavier rods....

that is the only difference...but it's fully-counterweighted and I believe our blocks have additional clearance in the center bulkhead to accomodate that