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-   -   291 LS-5 bbc heads (https://www.racingjunk.com/forums/showthread.php?t=31258)

ejm 11-18-2011 03:33 PM
291 LS-5 bbc heads
 
what are these heads and are they decent bbc heads

oldandtired 11-19-2011 07:18 AM
Re: 291 LS-5 bbc heads
 
Originally Posted by ejm
what are these heads and are they decent bbc heads
3964291 are 69 to 70 109cc closed chamber rectangular heads.
396/402/427/454/with 13/16 or 5/8 spark plug (gasket or tapered).
Hard to get good flow around the valves with the "bathtub" chamber.

ejm 11-27-2011 03:05 PM
well got motor home and they are 3964292 bbc heads just wondering if they are any better and what they are


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