Case heads filled or not?? August 19, 2019 07:10AM
Running ported case heads on a 4.1 531 motor. Dry block. Will hardblocking heads help stop cracking??
Thanks

Re: Case heads filled or not?? August 20, 2019 07:40AM
Won't stop it, but does help. Be lucky to get more than 2 seasons out of them

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