Heads
11-14-2011, 08:36 AM
#1
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Heads I have a set of 837 heads cast iron heads. going into a 00 chevy truck. Dropped a valve. Valve hit the guide on exhaust. Intake guide is cracked. Not really sure i want to mess with them. Thinking about just getting a different set.
My real question is. Can i get an aluminium heads? or do they have to be cast iron? Does casting number really matter?
My real question is. Can i get an aluminium heads? or do they have to be cast iron? Does casting number really matter?
11-14-2011, 10:46 AM
#2
You can put on aluminum heads, casting number does matter. SOme make better power than others.
Good- 5.3L heads, crappy flow but more compression will boost power some ($100-150)
Good - #2 - #317 heads, good flow but large chambers, stock aluminum version of 6.0L heads (~$200)
Better - #243 heads, good flow and smaller chambers. Power from flow and compression ($400)
Best - aftermarket / CNC OEM heads ($1000-3000) will make more power than all the others
Good- 5.3L heads, crappy flow but more compression will boost power some ($100-150)
Good - #2 - #317 heads, good flow but large chambers, stock aluminum version of 6.0L heads (~$200)
Better - #243 heads, good flow and smaller chambers. Power from flow and compression ($400)
Best - aftermarket / CNC OEM heads ($1000-3000) will make more power than all the others