4 speed vs. 5 speed for stocker
 

Hello guys,

I'm building a 03 mustang mach-1 and i was wondering what are your thoughts on what will be the best choice for my application or any thought at all. I'm undecided on what will be a good choice for me. In the rulesbook said that O.D. gear is not required but at the same time said that the car have to have the same number of foward speeds as original, that's kind of confusing, But anyway if I got the option what will be your choice. Any thoughts will be greatly appreciated. Thanks in advance!

Edgar

Re: 4 speed vs. 5 speed for stocker
 

considering you won't find a clutch assisted 5 spd jerico or g-force. I'd say a 4spd

Re: 4 speed vs. 5 speed for stocker
 

get a 5speed, call Jerico or g-force, i'm quite sure either one of those companys will have some used ones or a new one if thats what you're looking for.

Re: 4 speed vs. 5 speed for stocker
 

5-speed will be worth nearly two tenths over a 4-speed with that small engine. :eek:
You are allowed to run either a 4-speed or 5-speed with your application in S/SS

Re: 4 speed vs. 5 speed for stocker
 

Thanks, Jeff for the input, that is somthing to consider...

Re: 4 speed vs. 5 speed for stocker
 

No one mentioned yet that a 5 speed will cost you about 2000.00 more!!!! Just a small detail.

Re: 4 speed vs. 5 speed for stocker
 

Liberty sells there doug nash style for about 4500.00 now with face plate dogs,Jerico,G- Force also have clutch assisted 5 speeds.There are still some good original Nashes out there that can be bought for good price used is ok as long as it's not used up.
Mike Taylor 3601

Re: 4 speed vs. 5 speed for stocker
 

I have used both in my 305 chev g/s car.(current record holder) I prefer the 4 speed. The 5 speed "MAY" be a couple of hundreths faster when all scienced out, but it is (a)not as consistant, (b)more money, and (c)the 4 speed jerico is so reliable that you just can't beat it. The motors that you and i have are not high winding modified motors, they have good lower end power considering their size.

Re: 4 speed vs. 5 speed for stocker
 

That's incorrect....

The only thing better than a 5spd is a 6spd, but cost is definitely a factor.

Re: 4 speed vs. 5 speed for stocker
 

All I know is the late Bob Pott (K/S & L/S 5.0 Mustang); now driven by his daughter Kelly Pott-Hall) switched from a 4-speed Jerico to a 5-Speed. He was told by "all the experts" the cost difference of a 5-speed wouldn't make any noticeable difference, so that's what he ran for all those years.
Then he made the switch. With no other changes he picked up two tenths.
I'm under the impression the less the torque and the less the RPM capability of the engine, the more of an advantage a 5-speed has over a 4-speed.
And if there was a difference of $5K between the two offerings and I thought I could get two tenths without any other changes, I think it is money well spent.

I'd also highly recommend the Sportsman dual 7" clutch assembly. The idea here is to keep the weight as central to the crank centerline as possible. Again, I think small engines really need this. PM me if you need more info.

By the way, I think an '03 MACH 1 would be a really fun stocker! What class does it fit?