buffer (bÅ­f'Ér) Chemistry A substance that prevents change in the acidity of a solution when an acid or base is added to the solution or when the solution is diluted.
These Ford Racing Performance Head Gaskets are specifically designed for use with cast iron or aluminum cylinder heads on a Ford 289, 302, 5.0L, or 351 Windsor V8 engine.
Because of the 305's small bore, you're pretty limited. Large valve heads (2.02/1.60) won't work on a 305 because the valves will hit the block itself. If it's an older 305, y â¦ our best bet would be the old power pack 283 heads.They flow better than the older 305 heads. Now, if it's a vortec engine, you probably won't do much better than what it had stock.he 283 used 64cc combustion chambers and the 305 used 76 cc, so you are going to probably have to go to the nest higher octane gas. You'd be better off getting some dime-a-dozen 305 heads from a wrecking yard. A word of warning. Don't try to use heads with 2.02/1.60 valves from a 327 or a 350 on a 283 or a 305.