LT1 accordion intake coupler question
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
Re: LT1 accordion intake coupler question (Duntov)
I saw smooth intake tubes advertised in a recent MidAmerica Catalog. For 93-96 Vettes, the part numbers are 611-193 for the front coupler and 611-194 for the rear one. Each cost $59.99 or you could buy the pair for $99.99. I guess it makes sense that a smooth tube would flow better than the corrugated tube but I wonder if the results would be worth $100?
Melting Slicks
Joined: Jul 2002
Posts: 2,466
Likes: 0
From: livin life one hold my beer moment at a time Houst Tx
Re: LT1 accordion intake coupler question (khornet)
Ive been curious about it too since I saw the ad in Ecklers. It reports a 5-7hp gain but I would like to see some more proof before shelling out my hard earned cash.
Le Mans Master
Joined: Apr 2000
Posts: 6,294
Likes: 0
From: Amateur driver on open course.
Re: LT1 accordion intake coupler question (Duntov)
I would think that you may see a slight HP increase, but may loose torque. Turbulent air = torque, smooth air = HP. Just my .02
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Re: LT1 accordion intake coupler question (Duntov)
As you all may or may not know, we did a test on thi sat the track and didn't see a gain.
Mackey put a traffic cone in place and saw no difference at all.
Mackey put a traffic cone in place and saw no difference at all.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: LT1 accordion intake coupler question (Mr Mojo)
As you all may or may not know, we did a test on thi sat the track and didn't see a gain.
Mackey put a traffic cone in place and saw no difference at all.
Mackey put a traffic cone in place and saw no difference at all.
Eric
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
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
Le Mans Master
Joined: Feb 2002
Posts: 7,858
Likes: 2
Re: LT1 accordion intake coupler question (Duntov)
They don't help much is the general consensus, plus the accordian style OEM ones are flexible for a reason: under hard torque the engine moves on the mounts but the air cleaner box being fixed to the radiator housing does not move with it, so the intake duct needs to be able to flex a little. Also, the accordian ribs help keep it from sucking in and collapsing down under the strong vacuum created in the duct during high throttle application.
