I would say go for it, the machinist, unless warning you not to use it, put his shop on the line by turning it for you, if he thought it were a problem, he would have not turned it, really doubt that the heat checks will be that much of a performance loss In a message dated 7/14/2010 6:28:31 A.M. Central Daylight Time, ledman_70@xxxxxxxxxxx writes: Sorry for the blank post. Here's what I meant to ask: I just had my bigblock flywheel turned to install a new clutch and there are some small heat cracks in it due to the old clutch slipping. There'ye not bad, but do you guys think it's still useable? The car is a 64 Polara with a warmed up 426 wedge, 4-spd OD and 3:91 gears. I thrash on it regularly, but it will probably never see the track. The machinist said it wasn't that bad and turned it, but didn't charge me. He didn't say whether he'd use it or not. Jeff Adams wrote: > > > > Jeff Adams > 64 Polara Jeff Adams 64 Polara ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. -- [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.