blackgt87
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- Oct 11, 2011
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Has anyone on here broken a coyote block? Or heard of one breaking?
A friend told me a local-ish shop pushed the cylinder wall into the water jacket on two coyote blocks at about 750 hp, but I have seen people with forged internals make way more than that and I haven't heard of anybody breaking a block. I have even seen some stock GT engines make more than that and never heard of one breaking the block. He said all the high hp coyotes must have known about this and already tapped them or did a 1/2 fill in the block, I've never seen anyone say this.
He said a Ford engineer at Bradenton this past weekend told him about this. And said the fix was to drill the side of block and tap it with a 1 1/2" plug to hold the cylinder wall in.
He also said that Boss 302's have different sized head bolts and they were going to change them on coyotes too. But didn't say why or if there was a problem with something.
He said Lund tuned both of the ones that pushed the cylinder wall into the water jacket so he wouldn't blame the tune.
Did a search after I typed most of this and found this
http://www.s197forum.com/forum/showthread.php?t=61493&highlight=coyote+block&page=4
people talk there about the same blocks I was being told about breaking (powerhouse), are those the only ones to break? Or at least the only ones to get the cylinder pushed into the water jacket?
Anyway point of the post is that he is pretty much saying 1 out of 4 coyote blocks break after 800 hp and a ford engineer confirmed it. I just figured I would ask on this forum to see what people who actually own and have built coyotes have to say.
A friend told me a local-ish shop pushed the cylinder wall into the water jacket on two coyote blocks at about 750 hp, but I have seen people with forged internals make way more than that and I haven't heard of anybody breaking a block. I have even seen some stock GT engines make more than that and never heard of one breaking the block. He said all the high hp coyotes must have known about this and already tapped them or did a 1/2 fill in the block, I've never seen anyone say this.
He said a Ford engineer at Bradenton this past weekend told him about this. And said the fix was to drill the side of block and tap it with a 1 1/2" plug to hold the cylinder wall in.
He also said that Boss 302's have different sized head bolts and they were going to change them on coyotes too. But didn't say why or if there was a problem with something.
He said Lund tuned both of the ones that pushed the cylinder wall into the water jacket so he wouldn't blame the tune.
Did a search after I typed most of this and found this
http://www.s197forum.com/forum/showthread.php?t=61493&highlight=coyote+block&page=4
people talk there about the same blocks I was being told about breaking (powerhouse), are those the only ones to break? Or at least the only ones to get the cylinder pushed into the water jacket?
Anyway point of the post is that he is pretty much saying 1 out of 4 coyote blocks break after 800 hp and a ford engineer confirmed it. I just figured I would ask on this forum to see what people who actually own and have built coyotes have to say.