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castech heads repair

4255 Views 12 Replies 6 Participants Last post by  GREENSIERRA
Ok need some help fellas ive got a 04 Tahoe awd 5.3 just found out ive got the castech heads and they have a crack in them. dealership cost to repair and buy two brand new heads and button back up around $3000 or so. Should I just get some aftermarket heads or maybe 243's is what ive seen on here are a good option and put a cam in it? or just go back stock? I would love more power but I don't want to lose a lot of mpg's at the same time and I know if you increase hp you gonna lose mpg correct? Also if I put heads and a cam on it do I need to go ahead put headers on it too? Any suggestions would be greatly appreciated!
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you can buy a nice set of heads and do it yourself for a lot cheaper then that
pulling the heads really isn't hard at all.
intake is a 10min job to remove. get the fuel line tool.
get new gaskets and head bolts.
make sure you clean the block really well and get all the head bolt holes nice and clean
cutting a groove in a old bolts works perfect.
the bolts are torque to yield so you have to torque them to a certain amount then put a line on them and degree them. you can find it all out online fairly easy
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