80smtn

Hi All, I have an 86 Trans am with what Hawks refers to as a front Lower Deflector. My front Lower Deflector is a long piece of flexible plastic that extends around the front of the car. I do not have any other cooling items under the car and am wondering if i need both my deflector and what Hawks is calling the "Lower Air Dam" My engine bay gets very hot. Thanks in advance. John


What i currently have



what i don't have. Do I need to add this?

Drew

iTrader: (58)

The 3 piece is a later service part to replace the one pictured above.

80smtn

Thanks Drew. Do you think replacing my original wrap around with the 3 piece would make much of a difference in keeping my engine bay cooler?

Drew

iTrader: (58)

As long as you have one or the other you should be fine. The change was made mostly to reduce costs and complexity.

DynoDave43

iTrader: (11)

Did they ever use the 3 piece in production, or is that a service only part?

TTOP350

iTrader: (8)

The top one is for 85-90 birds without ground FX (base & formula birds) and is just the lower of 4parts.
IIRC, 91-2 have a different 3-5 piece style like the lower and there are 4 versions from 85-90 (2 types) 91-2 (2 types)

1989karr

the air dam, I purchased this for my Formula to replace the one piece factory unit.

The middle main piece fits perfect but the other pieces don't fit to well so I just left them off.

zman1969

iTrader: (9)

my 87 trans am with ground fx uses that same wrap around air dam somehow it disappeared after my son owned it it started overheating at higher speeds say 40 and up- and was fine below that
it creates negative pressure behind it to help draw air through the radiator I was able to locate one years ago no more overheating