Swapping an 84 T/A Cowl Induction on 89 Formula
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iTrader: (22)
Joined: Feb 2003
Posts: 371
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From: Claremont, North Carolina
Car: 1990 Formula Firebird
Engine: 305TBI w/ Functional Sport Hood CAI
Transmission: 700R4
Axle/Gears: SLP Posi and 3.23 Gears
Swapping an 84 T/A Cowl Induction on 89 Formula
Ok I have found a guy who will sell me his assembly off an 84 HO T/A for 75.00 plus shipping including these parts:
air pickup near radiator
flexible snorkel tube
air cleaner base
air cleaner lid with rubber seal
underhood air box with working flapper motor
vacuum switch
rain runoff piece
screen for the hood
Now I am running a Moroso open element with K&N Filter, can I keep my assembly or will I have to use his stock assembly to get the full effects of the induction? Or is this even worth doing? Also how hard of a swap is this and are there any instructions on doing so. And does anyone have any pictures of this installed on a car that I can see? Thanks for any info
air pickup near radiator
flexible snorkel tube
air cleaner base
air cleaner lid with rubber seal
underhood air box with working flapper motor
vacuum switch
rain runoff piece
screen for the hood
Now I am running a Moroso open element with K&N Filter, can I keep my assembly or will I have to use his stock assembly to get the full effects of the induction? Or is this even worth doing? Also how hard of a swap is this and are there any instructions on doing so. And does anyone have any pictures of this installed on a car that I can see? Thanks for any info
Junior Member
Joined: Aug 2003
Posts: 70
Likes: 0
From: cincinnati ohio
Car: 1990 WS6 firebird formula
Engine: 305 tbi(lo3)
Transmission: T5
i have that same setup on my 90 formula.i took my open element off and used everything from the setup.i'm not dissapointed.like it alot.
Member
Joined: May 2004
Posts: 279
Likes: 0
From: San Diego CA
Car: Badass 1991 Firebird
Engine: Screamin' 305 TBI
Transmission: 700R4
Axle/Gears: 2.73, 3.42's waiting to go in!
Love That Scoop, very "Trans Am"
Another idea I had was to mate a ramair box style air filter to a carb hat, then have that seal to a pan under the cowl scoop (the air filter would be off to the scoop side) and keep the functional flapper but do away with the rest.
To work with an open element would be tricky, since it is centered under the hood, and the scoop is off to the left. If you wanted to stay "open element" you could gasket the bottom of a stock aircleaner to a pan under the hood, which isolates the cowl air, have a smaller lid or XStream on your filter.
If you want to maximize flow with the stock cowl induction stuff, you could keep the functional flapper, but again put a pan under the scoop, with a hole in it that mates to the c.i. aircleaner lid, cutting out the "middle man"--the ducting. The stock ducting looks a bit small. As any of us with TBI can attest to, going from a stock aircleaner to an open element makes a big difference, so every increase in flow helps.
To work with an open element would be tricky, since it is centered under the hood, and the scoop is off to the left. If you wanted to stay "open element" you could gasket the bottom of a stock aircleaner to a pan under the hood, which isolates the cowl air, have a smaller lid or XStream on your filter.
If you want to maximize flow with the stock cowl induction stuff, you could keep the functional flapper, but again put a pan under the scoop, with a hole in it that mates to the c.i. aircleaner lid, cutting out the "middle man"--the ducting. The stock ducting looks a bit small. As any of us with TBI can attest to, going from a stock aircleaner to an open element makes a big difference, so every increase in flow helps.
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