6.4 vs 6.7

6.4pstroker · Aug 26, 2013

Ive got a 6.4 spartan tuned with a 5inch flo pro. And the local dealership has a real nice 6.7. The ever soo difficult decision is keep the 6.4 or get the 6.7?? I love my 08 but the '11 is nice too. Anybody made the switch? Just curious lookin for some opinions

FTKRayJr · Aug 26, 2013

IMO it depends on what your after. Comfort wise I love the newer interiors. Making the switch means your going to sacrifice some HP for the comfort though

webb06 · Aug 26, 2013

many many people have done the switch and most love it! the ones that have switched though say they are getting out of the go fast aspect and just want a NICE reliable truck.

aftermarket world will eventually catch up but the 6.4 will have more power for now for sure.

Dzchey21 · Aug 26, 2013

webb06 said:
many many people have done the switch and most love it! the ones that have switched though say they are getting out of the go fast aspect and just want a NICE reliable truck.

aftermarket world will eventually catch up but the 6.4 will have more power for now for sure.

This post pretty much sums it up the best thats why i switched, but i have both

tbsimmons · Aug 26, 2013

Just for a comparison on power.
My 450 with Innovative Tow tune tows like a '11 F250 stock. The extra gear helps in my opinion. Would I trade no. I love my 450. 250-250 though, hell yes.

Jeff@Spartan · Aug 27, 2013

Super happy with the switch....and my 6.7 is still stock.

521turbo · Aug 27, 2013

Love my 6.7, wouldn't trade it for the power. The interior and the mileage are well worth the trade. My stock 6.7 gets 12.5 mpg pulling my camper, and my tuned 6.4 got 7-8 mpg.

sootie · Aug 28, 2013

comfort and reliability over against raw power. with the recent breakdowns and expense when running a 6.4 north of 700HP, the reliability is starting to sound really really good.

Strokin6.4 · Aug 28, 2013

I think if you daily drive, tow, or just have a tune only 6.4 making the switch is well worth it. For me who rarely gets to drive my truck during the week and runs 11.4 in the 1/4 I dont want to "upgrade" to a 6.7. Only reason I would is for the interior. Honestly I've thought more about a eco boost or raptor than a 6.7. Or that nissan cummins will probably be sick.

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sootie · Aug 29, 2013

Strokin6.4 said:
I think if you daily drive, tow, or just have a tune only 6.4 making the switch is well worth it. For me who rarely gets to drive my truck during the week and runs 11.4 in the 1/4 I dont want to "upgrade" to a 6.7. Only reason I would is for the interior. Honestly I've thought more about a eco boost or raptor than a 6.7. Or that nissan cummins will probably be sick.

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you didnt just say that did u....

strokethis_06 · Jan 24, 2014

Bumping this up. Im in the market for a new truck. Have my eye on a 6.4. But seems like everyone is selling the 6.4s and moving on to 6.7s. What would you do and why?

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04redcrew · Jan 24, 2014

i had a hopped up 6.0 and was test driving used 6.4 and i test drove a 6.7 and wow the interior and stock power was nice. Lets just say i own a 6.7 lariat now

alradco · Jan 25, 2014

strokethis_06 said:
Bumping this up. Im in the market for a new truck. Have my eye on a 6.4. But seems like everyone is selling the 6.4s and moving on to 6.7s. What would you do and why?

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I wouldn't say everyone is selling their 6.4s moving to a 6.7. They are both probably the baddest trucks on the road. Seems like the 6.4 guys are making more and more power but the 6.7 had some comfort refinements that a lot of people like. I would say drive both and make the decision for what meets your goals best. Honestly I don't see how you could go wrong either way.

Tom@BigTimeKustomz · Jan 25, 2014

webb06 said:
many many people have done the switch and most love it! the ones that have switched though say they are getting out of the go fast aspect and just want a NICE reliable truck.

aftermarket world will eventually catch up but the 6.4 will have more power for now for sure.

This is why I went with a new 6.7 instead of a pre-owned 6.4. I love the power, mpg's and reliability of my truck. It's nice to have a warranty too so that any issues it goes back and they pay for it. I knew if I went 6.4 I would have tuned and deleted it and than the power bug would have bit me again. Just my $.02.

strokethis_06 · Jan 25, 2014

I guess I should have stated that it will be heavily modded. Which is the biggest reason I'm leaning towards a 6.4.

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Sideswipe505 · Jan 27, 2014

strokethis_06 said:
I guess I should have stated that it will be heavily modded. Which is the biggest reason I'm leaning towards a 6.4.

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If you're gonna mod it, go 6.4. Easy to make stupid power on em. My boss has a 6.7 and is jealous of how quick my 6.4 is.

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Jeff@Spartan · Jan 28, 2014

6.7's are proving to be pretty power capable too. Couple of threads in the 6.7 Aftermarket forum to keep an eye on.

Sideswipe505 · Jan 28, 2014

SPARTAN said:
6.7's are proving to be pretty power capable too. Couple of threads in the 6.7 Aftermarket forum to keep an eye on.

If I could afford a 6.7 I would have gotten one. Sadly they're a bit outta my price range.

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GROSSpolluter · Feb 7, 2014

I'm keeping my 6.4 till the wheels fall off. Then I will roll them back over and slap em back on. It will be paid off in 2 years and I don't want to start the payment process all over again.

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