Cam timing
Thread Starter
|
Freshman User
Joined: May 2008
Posts: 26
Likes: 0
Cam timing
I have an '89 E-350 with FI 460. The engine was recently replaced with remanufactured but compared to the old engine (which had badly burned valves) power is significantly less and gas mileage dropped from an average of 12mpg to only 6mpg with the same driver and general (easy) driving conditions.
It starts and runs okay but I'm suspecting the cam is retarded. I put a manifold vacuum gauge on it and with idle ignition timing at 30deg. the idle vacuum sits at 16" Hg. Anyone with 460 experience care to speculate?
It starts and runs okay but I'm suspecting the cam is retarded. I put a manifold vacuum gauge on it and with idle ignition timing at 30deg. the idle vacuum sits at 16" Hg. Anyone with 460 experience care to speculate?
Fleet Owner
Joined: Aug 2010
Posts: 21,254
Likes: 1,656
From: Reynoldsburg, Ohio
If you don't get too many replies here FTE does have another sub-forum dedication to that CID and era engine: Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) - Ford Truck Enthusiasts Forums
HTH
HTH
Thread
Thread Starter
Forum
Replies
Last Post
RebusCom
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
4
Dec 6, 2014 07:40 PM
72_po481
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
13
Jul 25, 2007 04:16 PM
1977_250_460_C6
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
5
Jan 4, 2005 01:01 PM
