The only thing you will have to worry about is a very minimal hit on your gas mileage. You won't be anywhere near redline at 100 with 4.10's.Jeff Goos said:Thanks for all the replies. I guess I should have defined my goals a bit more.
I'm wanting more low end torque, but don't want to give up my high speed highway efficiency. I make almost monthly runs to Las Vegas from San Diego and love cruising at over 100 MPH . A 4.10 rear end would take my RPMs from the current 3000 to possibly near red line. Not desirable.
Steedaq said:If you're driving 100 or near there for any period of time I wouldn't get 4:10's, I'd go with 3:73's max. A couple of mods that will gain you a few foot-pounds are K&N air filter, and a larger throttle body, I believe a '99 issue of 5.0 K&N and throttle body together added about 7 foot-pounds. Are long tubes legal with Cal's emmissions provided cats are in place? Problem is that its a very time consuming or costly install. I actually like the torque that the 4.6 2V's make. I had a 97 cobra (stock) that I sold partially because I had to be turning 4500 before I felt anything. Supercharger is expensive but it'll do the trick.
You originally said you primarily wanted more low end for the street.Jeff Goos said:Thanks for all the replies. I guess I should have defined my goals a bit more.
I'm wanting more low end torque, but don't want to give up my high speed highway efficiency. I make almost monthly runs to Las Vegas from San Diego and love cruising at over 100 MPH . A 4.10 rear end would take my RPMs from the current 3000 to possibly near red line. Not desirable.
The long tube headers sound interesting. More details please.
What's the "spray" thing??
What about the intake system? Anything I can do there? I heard something about increasing the speed of the flow???
The big engine mods are probably out of consideration, just not undoable at sale time.
coramprat said:The only thing you will have to worry about is a very minimal hit on your gas mileage. You won't be anywhere near redline at 100 with 4.10's.
jcp123 said:i'm not sure that an air filter and TB would get low-end...wouldn't the gains show up on the top end?
the long tubes should be legal, just make sure it has a CARB number to keep the smog nazis here happy.
and you're right, the 4.6 2v makes better low-end than a cobra, and better than most cars these days, but compared to the 5.0 even my older 302/5.0 they are a bit lacking...it's a matter of where you're coming from, i suppose
jcp123 said:but with 4.10's your 1st gear is basically rendered redundant, isn't it?
jadesville said:agreed, you'll have some good gains
another , NOOOOOOO. people make to big of a deal about 4.10s and 1st gear. with 4.30s it is not to much NA.jcp123 said:but with 4.10's your 1st gear is basically rendered redundant, isn't it?
Jeff Goos said:The long tubes sound like a potential option. What is their down side, if any? Is it true there arn't any with CARB approval? If I take a chance and install them myself will it cause me to fail smog testing or will the inspection guy with the mirrors be able to visually see they are not approved parts? I'm guessing they look non-stock. Can anyone recommend a few brand names?
Stupid question: what's a TA?
What about the intake manifold or other intake mods? I've heard longer runners help low end torque.
1990StangLX said:LT's are a big risk in this state...so i'd recommend going with JBA's shorties if you want to do headers