Newbie that needs help
6th Gear Member
Joined: Jul 2003
Posts: 14,917
Newbie that needs help
Originally Posted by Peck666
What your friend was talking about as far as back pressure goes with straight pipes is a lack off. An engine needs a certain amount of back pressure. Otherwise it will drop a valve... that's why you don't want to run open shorty headers... not enough back pressure. And before someone eats my *** for implying that shorty headers flow better than long tube headers, that's not what I'm saying. Straight pipes will decrease back pressure, but not enough to cause problems. Ran straight pipes with just glass packs off of a 460 ci Ford big block and I had no problems. But I suggest a nice mellow sound at idle and nice loud roar at high rpm... like with dynamax... or bassani.
The FACT is, TIME and TIME and TIME again, it'll never be proven wrong...the LESS back-pressure you have through your manifolds/headers, the MORE HP you will see. As long as you aren't running open heads, you have NOTHING to worry about. Back pressure is the ENEMY!!!!!!!!!!!! <img border="0" src=smileys/smiley17.gif border="0">
Adding Edelbrock shorties to my 3rd gen Iroc-z was a winter project, I even took her for spins with open shorties in 40 degree weather...she went 3 months before I had an exhaust bolted up. Didn't hurt a thing, and never would have.<edited><editID>Dan02GT</editID><editDate>37856.1913888889</editDate></edited>
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