sbc vs. LS7
!!! Do you really need that much flow!! its possiblae to have to much head esp on a small block, 400cfm should be expected for well over 500+ci motor. my 496 will only have 325cfm heads, if you go too big you have to turn the **** out of the motor.. i couldnt even imagine on the street. depends on how big of a small block your trying to go i guess. i know you can touch a 454 SB with an aftermarket block. anyway i think 400 is a lil much.. just me though.
On The Tree
Joined: Jul 2005
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From: Old Bridge "Raceway Park" N.J.
Originally Posted by Quickin
Aren't there sbc heads that flow into the 400's?
Barry Grant introduced a three valve per cylinder head at the SEMA show back in '04. I honestly haven't found the time to research the development on it, but with it supposed to be that cost-effective, it should be able to release the full potential of any SBC configuration, including the forgotten TPI, and pathetic TBI designs...
We shall see though...
Thread Starter
TECH Veteran
Joined: Dec 2001
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From: Ft. Lauderdale, FL, USA
Originally Posted by smokin2002
!!! Do you really need that much flow!! its possiblae to have to much head esp on a small block
So yes, I would think the more flow you have the more power you'll make, given the correct amount of cubes. I started getting parts together for an LS7 build, resleeved block. 4.155 bore x 4.000 stroke...434ci. Or go with a 4.125 stroke....447ci. Either way, as much flow as possible will help.
But I was figuring maybe going with a sbc instead of LSx....IF they can make more power than an LSx engine for a daily driver. Thats why I started the thread. I would have NRE build it.
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