Test,test,test before fixing anything automotive I do have a 440 block in the shop now that was frozen and broke, the drill and stitch method was used to fix it I've had several 906 heads fix that way also under the center exhaust ports, that works very well
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
before fixing anything automotive 
I do have a 440 block in the shop now that was frozen and broke, the drill and stitch method was used to fix it 
I've had several 906 heads fix that way also under the center exhaust ports, that works very well 