390 specs
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Freshman User
Joined: Jun 2001
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390 specs
I just bought a 78 F250 with a 390 4v installed in it. The kid that had it claims he just rebuilt it and it looks like it was because when I pulled the heads the pistons were hardly discolored. One of my problems is he installed a crane cam and its bending push rods now I have seen this before on a cleveland I had.Crane gave me spacers to put under the rockers and all was well. My question is if I measure the lift can I determine the spacer I need or I will have to tear the front of the motor apart and pull the cam. The other question I have is what compression should I be seeing I don't have a book on this motor and really don't know what year it is. I am guessing 66-68 and it came out of a car because they left the front sump pan on it. Did they ever change to 5/8" plugs on the FE's this one has 13/16" plugs
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
390 specs
13/16s.
John
jowilker
[link:www.ford-trucks.net/users/jowilker|Club FTE since 01 01] My FTE Page
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NC Truck Owners] NC Ford Truck owners group
66F100s Rule
In the cool still quiet of night you can hear chevies rusting away.
John
jowilker
[link:www.ford-trucks.net/users/jowilker|Club FTE since 01 01] My FTE Page
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NC Truck Owners] NC Ford Truck owners group
66F100s Rule
In the cool still quiet of night you can hear chevies rusting away.
Junior User
Joined: May 2001
Posts: 58
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390 specs
One of my problems
>is he installed a crane
>cam and its bending push
>rods. My
>question is if I measure
>the lift can I determine
>the spacer I need.
You don't need spacers, you need a different length pushrod. to measure for the correct length pushrod, you need a pushrod length gauge.
>
> it came
>out of a car because
>they left the front sump
>pan on it.
all FE's, except ones in 4x4 trucks have front sump pans
John,
GM writes my paycheck, but all I drive is Fords
>is he installed a crane
>cam and its bending push
>rods. My
>question is if I measure
>the lift can I determine
>the spacer I need.
You don't need spacers, you need a different length pushrod. to measure for the correct length pushrod, you need a pushrod length gauge.
>
> it came
>out of a car because
>they left the front sump
>pan on it.
all FE's, except ones in 4x4 trucks have front sump pans
John,
GM writes my paycheck, but all I drive is Fords
