Big block mileage
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Joined: Aug 2003
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From: Isanti, MN
Doesn't the term "Big Block" refer to a certain GM V8 engine family? You won't find one of those in many E-series vans.
The E-vans got the FE-series 460, which is probably the closest competitor to the GM 454 that people typically think of with the term "Big Block". They stopped using these engines in 1996, and it was replaced in '97 with the 6.8L modular V10. Most with V10s report 12-13 MPG, and those with 460s tend to report a bit worse than that.
The E-vans got the FE-series 460, which is probably the closest competitor to the GM 454 that people typically think of with the term "Big Block". They stopped using these engines in 1996, and it was replaced in '97 with the 6.8L modular V10. Most with V10s report 12-13 MPG, and those with 460s tend to report a bit worse than that.
Fleet Mechanic
Joined: May 2011
Posts: 1,414
Likes: 10
From: Thornhill , Ontario
actually they are 3 different engine families...The only current survivor is the 460 ..Or 7.5 were Internally balanced before 1978 and Externally balanced after that until 1996 I believe...But the Parts are Interchangeble to a certain level with the 429 ...The 352 and 360-390 AND the Cobra-Jets ( 428 /429) were totally different
https://en.wikipedia.org/wiki/Ford_FE_engine
But in reference to the OP a 460 Van E350 In an excellent state of tune....you will be lucky to get 8 mpg
https://en.wikipedia.org/wiki/Ford_FE_engine
But in reference to the OP a 460 Van E350 In an excellent state of tune....you will be lucky to get 8 mpg
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Doesn't the term "Big Block" refer to a certain GM V8 engine family? You won't find one of those in many E-series vans.
The E-vans got the FE-series 460, which is probably the closest competitor to the GM 454 that people typically think of with the term "Big Block". They stopped using these engines in 1996, and it was replaced in '97 with the 6.8L modular V10. Most with V10s report 12-13 MPG, and those with 460s tend to report a bit worse than that.
The E-vans got the FE-series 460, which is probably the closest competitor to the GM 454 that people typically think of with the term "Big Block". They stopped using these engines in 1996, and it was replaced in '97 with the 6.8L modular V10. Most with V10s report 12-13 MPG, and those with 460s tend to report a bit worse than that.
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Senior User
Joined: Nov 2008
Posts: 230
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From: Spring Hill
Doesn't the term "Big Block" refer to a certain GM V8 engine family? You won't find one of those in many E-series vans.
The E-vans got the FE-series 460, which is probably the closest competitor to the GM 454 that people typically think of with the term "Big Block". They stopped using these engines in 1996, and it was replaced in '97 with the 6.8L modular V10. Most with V10s report 12-13 MPG, and those with 460s tend to report a bit worse than that.
The E-vans got the FE-series 460, which is probably the closest competitor to the GM 454 that people typically think of with the term "Big Block". They stopped using these engines in 1996, and it was replaced in '97 with the 6.8L modular V10. Most with V10s report 12-13 MPG, and those with 460s tend to report a bit worse than that.
Cargo Master
Joined: Apr 2013
Posts: 3,087
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From: Central Florida
I can't imagine the fuel budget is actually important for a toy.
Super Moderator
Joined: Aug 2003
Posts: 25,479
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From: Isanti, MN
Originally Posted by highwayhogg
Thanks for the replies. Wondering how much over drive would really net me. It's a 56 panel truck with; 460 .030 over C6 and 3.50 posi. Gets about 10mpg on hwy at 60 mph at 2500 rpms
BTW...can you post some pics?
Fleet Mechanic
Joined: Aug 2016
Posts: 1,480
Likes: 6
From: Great White North
I thought the 429 and 460 were the same and part of the "385" series engines. I was told over twenty five years ago by a retired mechanic that if you drill a whole "somewhere" on the engine (likely on the emissions) that a 460 will go from 8mpg to 16mpg. This would have been in the mid seventies. I am wanting a travel setup which would either be a van or a truck and trailer but of course I want mileage in the twenties 
