Deeper than HP?
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
No. If a mod makes the motor more efficient at cruising RPMS, (in this example, by reducing pumping losses), it will get better fuel economy. The HP required to overcome drag at 60 mph is a certain amount. Your modded motor is more efficient and will require less fuel to make that hp.
I think the only place a freer intake could help would be at WOT, and then only if the original either didn't flow enough or flowed hotter air.
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
And....if your engine requires, say 600cfm air at wide open throttle at a 7psi pressure differential....and your stock filter setup will flow 650cfm @ 7psi delta....then going to an aftermarket filter that is capable of flowing 800cfm @ 7psi delta will gain you zero in the way of power. In this case, there are no pumping losses from the stock air filter...even at WOT.
Larry
code5coupe
__________
I'm not a physicist, but I play one on the Corvette Forum.
Last edited by rocco16; Apr 18, 2007 at 03:23 PM.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
And....if your engine requires, say 600cfm air at wide open throttle at a 7psi pressure differential....and your stock filter setup will flow 650cfm @ 7psi delta....then going to an aftermarket filter that is capable of flowing 800cfm @ 7psi delta will gain you zero in the way of power. In this case, there are no pumping losses from the stock air filter...even at WOT.
The engine doesn't "require" any particular psi drop. It just requires air. The pressure drop, and resulting HP loss will be a result of how restrictive the path is, whether it's "flow rated" at 10,000 cfm or 200 cfm (and it will be measured in a few inches of water column, nowhere near ~7psi.)
You're not a fluid engineer either are ya Larry?
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Remember that we are all smarter than the engineers who designed these cars.
When my stock 95 six speed can go 13.07@108, I think they did something right.
That being said, I do have the K&N, the SLP Claw, even the airfoil(it was free) and the 160 t-stat. Haven't had a chance to take it to the track yet, but in all honesty, I'm not expecting much.
When my stock 95 six speed can go 13.07@108, I think they did something right.
That being said, I do have the K&N, the SLP Claw, even the airfoil(it was free) and the 160 t-stat. Haven't had a chance to take it to the track yet, but in all honesty, I'm not expecting much.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
You can also see the pressure drop on cars with a MAP sensor. Mine doesn't tend to drop more than 2 KPa at WOT @ 7,000 rpm. I'm fairly certain the intake poses no restriction for me (I have a Claw, the cut-lid and paper dropped maybe 3-4 KPa at WOT @ 7k).I think that's like .3psi?