Ahhhh, the old headers vs. manifolds discussion. OK, why not?

- yes headers will usually show a gain over manifolds. how much depends on the motor/build. Expect maybe 10-15 on a street RB.

BUT

- most people fail to consider that the exhaust system is a SYSTEM and the motor doesn't really care WHERE the restriction is. I am positive that my HP manifold/2 1/2 " mandrel bent TTI/Dynomax Ultraflow system flows better than a set of cheapie headers mated to the stock exhaust system.

- People tend to look at this two ways; one person will say why give up the hp using manifolds and another will say that you can get whatever hp you are after using manifolds with the right build. Both are usually correct: it depends on your perspective.


Headers vs. Manifolds

pros - flow better, usually pick up some hp, lighter

cons - most leak, higher underhood temps, full headers can drag, doesn't look stock.

As was said; 500hp can easily be had with manifolds....how much power are you looking for?



Dave