Posted by: rickyracer
01/29/2002, 15:33:11
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Spacers are a "tuning" item. 4 hole ones give better throttle response, one hole gives better top end HP/TQ. but usually it takes a 2" one to really see any difference. Factory spacers are usually for a heater system using engine water or vacuum hookup for smog. Hood clearence can also be a problem with spacers. Weiand action or Edlebrock Pref are both good manifolds. 500 CFM is a good carb for 289/302s. A spacer will actually lower the CFM flow due to a air change in the flow path. KN air filter and carb flow adapter will make a big difference too.
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