Had been thinking of buying new Edelbrock BBC heads for either the 396, or 454 if I got one.
Reading one story someone talked about having the new complete heads getting a valve job, did not make sense so didn't pay attention.
Saw on YouTube looking for 454 engines, on the side another video saying to never run new aftermarket heads out of the box.
Watched it, and basically the machine shop guy was showing that brand new aftermarket heads from any brand, has crappy valve jobs.
It's suggested you buy the heads bare and let machine shop do valve job and install the parts.
Not sure if they are crappy valve jobs brand new, or he is trying to get people to use him so he can make $$.
Found another video and another machine shop guy shows new heads and how they leak carb cleaner out of the valves.
I thought the idea of buying new assembled heads is so you don't need to go to a machine shop.
Has anyone heard of this?
reading through the links and sub links should help you a great deal,
and and yes its almost mandatory that you disassemble,
and inspect and clean new heads and verify clearances etc.
a couple hours spent reading through the links,
could save you a wheelbarrow full of wasted cash and weeks of wasted time
http://garage.grumpysperformance.co...u-buy-bare-or-assembled-heads.534/#post-57612
http://garage.grumpysperformance.com/index.php?threads/valve-seat-runout.15104/#post-86003
http://garage.grumpysperformance.co...lve-seat-angles-and-air-flow.8460/#post-29719
http://garage.grumpysperformance.com/index.php?threads/valve-train-clearances-and-problems.528/
http://garage.grumpysperformance.co...alves-and-polishing-combustion-chambers.2630/
http://garage.grumpysperformance.com/index.php?threads/multi-angle-valve-job-related.3143/#post-8387
http://garage.grumpysperformance.com/index.php?threads/finding-a-machine-shop.321/#post-59253
http://garage.grumpysperformance.com/index.php?threads/finding-a-machine-shop.321/#post-59253
http://garage.grumpysperformance.co...-by-step-guide-with-pictures.5378/#post-32456
http://garage.grumpysperformance.com/index.php?threads/ccing-my-heads.14187/#post-71989
http://garage.grumpysperformance.com/index.php?threads/big-block-head-comparison.319/
http://garage.grumpysperformance.com/index.php?threads/aftermarket-heads-for-a-bbc.12316/
http://garage.grumpysperformance.co...e-springs-and-setting-up-the-valve-train.181/
http://garage.grumpysperformance.com/index.php?threads/big-block-pushrod-guide-plates.4596/
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