Question about Exhaust manifolds
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Junior Member
Joined: Oct 2007
Posts: 8
Likes: 0
From: Philly PA.
Car: 88 Sport Coupe Convertible
Engine: L03 305
Transmission: 700R4
Question about Exhaust manifolds
i have an 88 sport couple vert with a L03 TPI 305 engine i just want to know what the lines that seem to be running into the Exaust manifolds are and can they disposed with no problems???...i want to put a full new exhaust system on it...
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Question about Exhaust manifolds
buy some headers without air tubes and you'll be fine. Headmann shorties are good for a 305 along with the headmann y-pipe and a quality 3" catback from flowmaster, magnaflow, etc etc.
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: Question about Exhaust manifolds
The LO3 is the TBI, not the TPI.
Those lines going into the exhaust manifolds are getting air from the air pump into the exhaust to help with tailpipe emissions. As such, its a violation of federal laws to remove them on a street car.
Those lines going into the exhaust manifolds are getting air from the air pump into the exhaust to help with tailpipe emissions. As such, its a violation of federal laws to remove them on a street car.
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