Would it be possible to install headers for an '84 on an '87 TPI.
Here are the ones for an ;84

and these are for an '87:

It looks like I can remove the stove/heater thing, use an elbow on the drivers side air tube, but what about the Y? It seems like the shape may be the same but the joints are in diff places. Does anyone know if this will be an issue?
Thanks
Here are the ones for an ;84

and these are for an '87:

It looks like I can remove the stove/heater thing, use an elbow on the drivers side air tube, but what about the Y? It seems like the shape may be the same but the joints are in diff places. Does anyone know if this will be an issue?
Thanks
Senior Member
If no one responds, try the exhaust forum.
Supreme Member
Aside from the heat stove connection, the Y pipe should be the same shape, just the outlet is 2.25" instead of 3".
Also, the 84 Y pipe most likely incorporates the use of the vacuum controlled flapper valve on the passenger side that helps the carburated cars warm up faster.
Also, the 84 Y pipe most likely incorporates the use of the vacuum controlled flapper valve on the passenger side that helps the carburated cars warm up faster.
Supreme Member
Jproz1167
Supreme Member
close
- Join DateFeb 2003
- LocationCalifornia
- Posts:2,065
- iTrader Positive Feedback100
- iTrader Feedback Score(3)
- Car1982 Trans Am & 1982 Corvette
- EngineL-98 with LO-3 induction. 350 CFI
- Transmission5 speed and vette has 700r4
- Axle/Gears373's in T/A .. vette unknown
- Likes:0
- Liked:0 Times in 0 Posts
the LG-4 84 system was 2.25 ... The L-69's was 3 inch ... the flapper thing can be replaced with the non flapper spacer.
Kevin91Z
Moderator
close
- Join DateJul 1999
- LocationOrange, SoCal
- Posts:10,950
- iTrader Positive Feedback100
- iTrader Feedback Score(1)
- Car1990 Pontiac Trans Am
- Engine355 TPI siamesed runners
- TransmissionTremec T56
- Axle/Gears12-Bolt 3.73
- Likes:115
- Liked:26 Times in 22 Posts
Why dont you get a set of Dyno Don's headers instead? Much better than that crappy Edelbrock junk.
Kevin, if the car was still mine I'd def get Don's headers but I gave it to my brother. He wants headers but he's also on a tight budget.
Kevin91Z
Moderator
close
- Join DateJul 1999
- LocationOrange, SoCal
- Posts:10,950
- iTrader Positive Feedback100
- iTrader Feedback Score(1)
- Car1990 Pontiac Trans Am
- Engine355 TPI siamesed runners
- TransmissionTremec T56
- Axle/Gears12-Bolt 3.73
- Likes:115
- Liked:26 Times in 22 Posts
Tell him to save his money then. Edelbrock headers are crap. Get Hooker 2055's instead. There's no such thing as modding a car on a tight budget. You'll get nickel and dime'd to death.



