FS: Edelbrock/WCCH 245cc Heads (stage 2)
11-20-2010, 06:32 PM
#13
Been doing alright. Trying to get all my excess stuff sold so I can finish paying for my new motor and set-up. I had hoped to have it up and running by this time but things don't always work out the way we want them to do they! 
As far as your questions about the heads. These heads are for motors that like to breath and/or require lots of flow. For smaller N/A motors these heads would be overkill as they wouldn't allow enough intake velocity at lower RPM's to merit the swap. The bottom end would be a dog but once it got to spinning these heads would do really well.
In your particular case, I would think putting free'er flowing heads on your combo would most likely drop your boost pressure (since boost is a measure of restriction), allowing your compressor to flow the same amount of cfm's at cooler temps while making the same if not alittle more power even though you might be down a few psi. For serious gains you'd benefit by going with a smaller pulley to regain the 2-3 psi you'd probably lose and watch you make more power, much more efficiently.
There's a few threads running around regarding people who've swapped heads on superchargers and lost a few psi but gained hp in the process. And once they pully'ed down to regain their lost psi they saw a big jump in power because the increased airflow generated by the better heads allowed for much higher cfm's.
As far as your questions about the heads. These heads are for motors that like to breath and/or require lots of flow. For smaller N/A motors these heads would be overkill as they wouldn't allow enough intake velocity at lower RPM's to merit the swap. The bottom end would be a dog but once it got to spinning these heads would do really well.
In your particular case, I would think putting free'er flowing heads on your combo would most likely drop your boost pressure (since boost is a measure of restriction), allowing your compressor to flow the same amount of cfm's at cooler temps while making the same if not alittle more power even though you might be down a few psi. For serious gains you'd benefit by going with a smaller pulley to regain the 2-3 psi you'd probably lose and watch you make more power, much more efficiently.
There's a few threads running around regarding people who've swapped heads on superchargers and lost a few psi but gained hp in the process. And once they pully'ed down to regain their lost psi they saw a big jump in power because the increased airflow generated by the better heads allowed for much higher cfm's.
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