Wanting to purchase my first v10 and would like to put headers and good sounding mufflers on to boost mileage and overall performance. Is this a good idea? Or are stock manifolds good enough? Dont want to disturb any computer settings with after market products. Would also like to change gears to 3:55 or 3:73 any idea how much $ for this?

 

youre in the wrong forum bro this is diesel Pre-Power Stroke Diesel (7.3L IDI & 6.9L)

 

no, it's not.

 

well you may be the first to want to change to 355 or 373, if you have 430s someone would probably swap with you...

 

Change to 3:55 or 3:73 from what?

Good headers with no other exhaust changes around $400

 

WHAT??? 4.30's are what you want with a V-10. Most came with 3.73's. 4.30's will actually improve the mileage and make it tow like a champ. I'd take a set of 4.30's for my v-10 any day!!!

 

A 4.30 rear end might make it tow like a champ but definitely will not getter mileage than an Excursion with a 3.73 rear end.

 

For a V-10 Yes it will!!! Ask anyone on the v-10 forum. This is a well known fact. Maybe not for a diesel but for a v-10 4.30's are a hot Item. Because the motor doesnt have to work as hard to move that 6800 truck. This has been discussed religiously on the v-10 forum.

 

You must have misunderstood my statement, if I had a v10 I would only want 430s. If he has 430s and wants to swap to 355s or 373s he'd be the first. Wouldn't want to lose that much power to the ground

 

If you want to go to 3.73 you will have a line of people on this forum willing to give you theirs for swap and will probably drive to you and pick them up and even help you put them your truck. I know I would - tell me where and I will go pack a bag and my tool box.

Dana 60 Front 3.73
Sterling 10.5 LS Rear 3.73

 

KP1001 what year is truck with the V10 in it?

 

I had Banks headers installed about 4 weeks ago and have a good increase in mid range power and fuel mileage has improved as well. I have had one V10 truck with 3.73's and when compared to my 4.30 geared versions there is no comparison. I never got better fuel mileage then the 4.30 geared trucks and nowhere near the pulling power when towing. I do find that the manual transmission V10's get about 1-1.5 mpg better then my auto equipted V10's did. Just sold my 2000 Excursion and it never saw 14 mpg, mid 13's the best it ever got. My 6 speed manual get high 14's with very little trouble.

 

I've had a set of 3;55's in an f250 with a 351. Didnt seem to do too bad. If I remember correctly I think my mileage was around 12. Hard to believe a set of 430's would get better mileage on the hi-way. By the time I have Mike at 5star send me a program, I get some decent mufflers, and maybe a K&N I thought 373's or 355's would be fine. I've driven a v10 and they have some good low end. Most of my driving would be highway with occasional horse trailer. I would guess around 15k lbs truck and trailer.

 

Don't have the truck yet. As I stated in my original post I'm looking to make my first v10 purchase. People really get better mileage on the highway with 4;30's than 373's?