5.3l heads on a 408???
07-03-2007, 07:52 PM
#2
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no experience but i don't see why they wouldn't. i would probably open the chambers up to 4.00" to unshroud the valves and recheck your chambers to verify what cc they turned out to be .
07-04-2007, 12:06 PM
#4
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If they flow 300+ at .600 lift and you open them up to 4.0 bore and have some dished pistons, they will work. Not optimum but will work fine.
I'm running 5.3L on my 370 and trapping 126.x mph on a 232/234 cam so yeah they do a good job.
I'm running 5.3L on my 370 and trapping 126.x mph on a 232/234 cam so yeah they do a good job.