K&N Filter Tops

[sv10001975]

for maximum results you want the air cleaner top a minimum of 3 1/2 inches above the carb top. all i can say is that i have seen these top cause way more losses in horsepower than I have seen gains. not to say in some application that it wouldn't increase horsepower, but based on my experience it will not increase horsepower. like i said i was fooled by K&N as well, have a filtered top sitting on the shelf that has about two minutes on the dyno before we yanked it off. it causes major disturbances on the air entry points and this always causes a drop in power. just my 2 cents worth

[Bad70sbchevy]

OK, that makes sense about the air velocity, but I'm just throwin this out there, even if you are running a huge air filter, won't your air velocity still speed up if your using the right carburator (not oversized) when the air encounters the smaller passeges of the carburator assuming that the amount of air is not changing? It would be just like running a carb without an air filter if you take it to an extreme. Or are you still looking at velocity issues like you said?

[junkyardjohn]

Originally Posted by sv10001975

for maximum results you want the air cleaner top a minimum of 3 1/2 inches above the carb top. all i can say is that i have seen these top cause way more losses in horsepower than I have seen gains. not to say in some application that it wouldn't increase horsepower, but based on my experience it will not increase horsepower. like i said i was fooled by K&N as well, have a filtered top sitting on the shelf that has about two minutes on the dyno before we yanked it off. it causes major disturbances on the air entry points and this always causes a drop in power. just my 2 cents worth

WELL... IT'S KINDA LIKE THE OIL FILTER DEBATE, OR THE GASKET DEBATE, LONGBED VERSUS SHORTBED, FLEET VERSUS STEP... YADDA YADDA... I'M NOT ANY KIND OF AIRFLOW GURU. I JUST KNOW WHAT WORKS FOR ME ON MY TRUCKS. THAT BEING SAID... I'LL GLADLY PAY YOU $20 FOR YOU'RE WORTHLESS 14" K&N TOP, & IT WONT BE IN YOU'RE WAY + YOU'LL BE ABLE TO RECOUP PART OF THE INVESTMENT THAT K&N FOOLED YOU OUT OF. P.M. ME FOR PAYMENT. JOHN