2slow99

I'm debating on geting a trick flow plenum and bbk U.D. pullies for around $280 or just getting a set of gears for around $450 installed. my car is a 99 gt dally driven and sees regular high way use at speeds over 75. also if i do the plenum and pullies what will i roughly get for power.

02StanGT

I would think 10 horsepower for the pulleys and intake. If you read around these threads you will see that people recommend gears first then start with the bolt-ons.[sm=gears.gif]

Acer2428

agreed.... for 75+ mph I would say 3.90's.

Soaring

Can you guys get mid 350's for your 4.6's? For a classic, 390's would be a bit much for 75 MPH highway use.
I know my 03 Mach1 has a 3:55.1 axle ratio.

02StanGT

We can get 3.55's. In fact you should have them on your Mach 1. Most people like 3.73+ though.

Soaring

Bottom end will improve, but they are talking about 75 MPH highway use. Why go beyone 3:55's for this application?

2slow99

what can i roughly expet to run in the 1/4 w/ 3.73s my first time out i ran a 14.6.i'm lookin forward to runing at FFW when it comes around to my local track (New England Dragway).

02StanGT

I would say two to three tenths should be cut off. 14.3-14.4

2slow99

i don't travil to far on the highway but when i do i like to go fast!!![sm=gears.gif]

Quatrocky

gears, get some 4.10's