Mustangrobbie1

If i changed this to a 70mm or 75 does this make a differencs?

I have a 1989 GT Auto 5.0

PX429

yeah a 75 will make you slower

Mustangrobbie1

Ok so go with a 70mm

PRO50SC

What are yiour plans. You'll get no real noticable difference from it. I would spend the money elsewhere first. What has been done so far?

PX429

If this is all you have I would get the 4.10's that you were thinking about. Just spend your money on the gears. Trust me you'll love them

and reply to your other post

92hatchLX

Bolt ons are a learning experience for most, you have to get them all before you realize that you should've spent all of that money on a S/C or a H/C/I swap. But in the long run you'll need all the stuff anyways. I ran a 70mm TB when I had a stock manifold and I just smoothed the lip on the upper plenum because the opening isn't 70mm it's smaller. But I'd save your money and do a whole bunch of bolt ons all at one. Like get a 70mm TB, larger MAF, CAI, and U/D pullies all at once and you'll notice a pretty big difference.

Mustangrobbie1

Well i just bought this car now i am hooked.
I removed the AC
New cat back system custom pips
New ALt, smog and power steering pump
I put in a AC elelitor kit
New rad and hoses.plus new paint job

So now i am looking for more HP

I orderes 4:10 Gears today
I just put in the BBK intake

i am looking for cheap things first then bigger things later if i still have money left LOL

PX429

Cheap HP hmm... Nitrous

Mustangrobbie1

If i put that in the canadian cops would kill me not allowed here. Being a cop i think that wouldn't be good move

PX429

Nitrous is not Legal here either. I still have it