3919842 Aluminum heads quality

[RALLY]

anybody have a pair of these heads 3919842 closed chamber they used on Camaro L89 396 and Corvette L-88s for sale? my question is are these heads very strong, do they crack easy around the stud bosses and elsewhere? whats a good decent untouch pair worth, anybody, thank you.

[VintageMusclecar]

They're known for cracked rocker stud bosses when using big springs and for the valve seats falling out.

Eric

[wheelhop]

Set for sale on Team Chevelle under 1969 parts section.