articfriends

iTrader: (1)

Sorta, years ago we drag raced a 69 GTO w pontiac 400 with a aluminum rods, 5.13 gears, because "everyone" was doing it, we milled off air horn on our holley carb. We didnt do a a/b test with before and after, we went from a smaller carb like a 650 to a milled off 850. we saw better mph. Later on we put a KN stub stack on BUT we were young and made multiple changes all the time so cant say it went faster with it but at time it picked up like half mph.
Recently during a dyno session we tested a "KN FLOW CONTROL" air cleaner. https://www.knfilters.com/racing/flowcontrol.htm
I had actually forgot about them and always wanted to try one. My neighbor had one new in the box, Well, with a nice domed lid vs the kn flow control the kn made afrs worse and we lost about 6 or 8 hp so so much for THAT.
Another thing I DID recently test was a 15 year old KN filter top. I bought a Spectre Chinese copy of one about 10 years ago, tried it on a DRY efi tb motor and a carbed motor, it hurt distribution and lost hp on both so we sorta condemned THAT as something to waste your money on. So recently I dynoed a friends 496 BBC, had AFR 305 heads, healthy non boat friendly cam. With one of my proflow edelbrocks with modded tb we saw 717 hp. with customers box stock VIC jr and 850 carb that was done by norm, we saw 680 something, no air cleaner. So customer drags out this factory drop base air cleaner with a 2 1/2 or 2 3/4 element and his KN lid, I laughed and said get ready to see this thing drop 80 hp as filter is clearly too small known from previous dyno testing of air cleaners. Well, I couldn't be more wrong, this thing made almost identical tq and lost maybe 4 hp, I was shocked! so evidently the real KN filter top, at least the old one, actually seems to help air flow where spectres version is a mess, fwiw, Smitty

articfriends

iTrader: (1)

Tell me more, always wanting to test new things!

hogie roll

A motortrend+ subscription is soo worth it just for all of the engine masters episodes. Especially in your line of business! I highly recommend it.

ThisIsLivin

Smitty,
What I like best about Engine Masters is they have tested many of the little things I have done to tweak my motor and how much HP they have added. I never had time to dyno my motor so I'm pretty happy with what I have, now that I've seen similar testing. I'll pull my FA off this weekend and get it to you for testing. Based on similar comparison tests it should do very well. I still need to get you my injectors for testing as well. Too many car projects, I now have a valve train issue in my 2015 Yukon 6.2. Time for AFM delete and a little more cam, maybe even a Katech head port.

Gimme Fuel

Smitty you would love that show. They actually do a pretty good job of matching conditions for each run (coolant & oil temps, air quality, etc.). They also usually run 8-O2 sensors and have touched on the poor fuel distribution issues in some episodes. One interesting one was them looking at HP and fuel distribution for various style procharger carb hats for instance.

Well worth the subscription for any motorhead.

SB

iTrader: (1)

That one was really good. :thumbs