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340 upgrade
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340duster
New User
| Posts: 1
| Joined: 08/09
Posted: 08/05/09
12:57 PM
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looking to upgrade motor this winter
i'm currently running a set of z heads on my 340
would i be getter off to buy some indy la-x heads or
edelbrock performer aluminum heads
this is strickly a drag motor
or stick with the heads that i got
which is better x or z heads
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drmopar
Enthusiast
| Posts: 728
| Joined: 02/08
Posted: 08/06/09
02:13 AM
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X & J heads are the best, you say this is for a drag motor? All LA style heads from the 340/360 line are good when ported and polished. Especially with the 2.02 intake valve. However they have their limits, if you plan on running more than 550 lift the gains are limited.
So if your cam is 550+ lift the eddys are the way to go, again I would port and polish. Be sure to run an extra .5 to 1.0 comp. with the aluminum heads other wise they are a bolt on.
Doc
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