What do 5.3l heads need to run on a 408ci?
07-22-2004, 05:12 PM
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What do 5.3l heads need to run on a 408ci? Thinking about going with a new shortblock but i have the 5.3L (unmilled) stg1.5 (2.02/1.57)TEA heads. What would i need to do to make these work with the 408ci until i can get some 6.0L 's?
07-23-2004, 06:14 PM
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New head bolts 
Ok i would think they would be fine but bigger valve would not hurt and just don't go crazy with a big cam valve lift cause i think over 600 lift with that bore will cause turbulence within the head 
Ok i would think they would be fine but bigger valve would not hurt and just don't go crazy with a big cam valve lift cause i think over 600 lift with that bore will cause turbulence within the head 