5.0 & 5.0 H.O
Thread Starter
5th Gear Member
Joined: Jul 2003
Posts: 3,451
From: United States
RE: 5.0 & 5.0 H.O
Well from what i've read the mustangs had a cam changine in '88 or '89. I want to say the reasoning I read was because of the fuel crisis? It was a pretty reliable source, but i've never checked specs on either so I don't know for sure.
So I didn't know if the cam was different in the mustang H.O. vs the mark vii H.O.
Also as mentioned above. The mustangs only had forged pistons in 87-92. They switched to hypereutectics in '93
I didn't know if the lincoln H.O.'s were cast, hyper, or forged.
So I didn't know if the cam was different in the mustang H.O. vs the mark vii H.O.
Also as mentioned above. The mustangs only had forged pistons in 87-92. They switched to hypereutectics in '93
I didn't know if the lincoln H.O.'s were cast, hyper, or forged.
D.R. THE PATHETIC DORK
Joined: Jun 2007
Posts: 30,869
From: West Virginia
RE: 5.0 & 5.0 H.O
ORIGINAL: FoxGT
Well from what i've read the mustangs had a cam changine in '88 or '89. I want to say the reasoning I read was because of the fuel crisis? It was a pretty reliable source, but i've never checked specs on either so I don't know for sure.
So I didn't know if the cam was different in the mustang H.O. vs the mark vii H.O.
Also as mentioned above. The mustangs only had forged pistons in 87-92. They switched to hypereutectics in '93
I didn't know if the lincoln H.O.'s were cast, hyper, or forged.
Well from what i've read the mustangs had a cam changine in '88 or '89. I want to say the reasoning I read was because of the fuel crisis? It was a pretty reliable source, but i've never checked specs on either so I don't know for sure.
So I didn't know if the cam was different in the mustang H.O. vs the mark vii H.O.
Also as mentioned above. The mustangs only had forged pistons in 87-92. They switched to hypereutectics in '93
I didn't know if the lincoln H.O.'s were cast, hyper, or forged.
and mustangs didn't just come with forged pistons from 87-92!! 85 and 86 came with forged in the h.o motors 85 being the first year replaceing the sand cast pistons used in 82-84 h.0 MOTORS
86 ARE NOT THE MOST desired due to no provisions for valve reliefs
M.A.D. Motorsports
Joined: Jul 2006
Posts: 8,014
From: Indiana
RE: 5.0 & 5.0 H.O
I'm sure the Lincoln's followed the same pattern as the mustangs did with the pistons and cam designs. They put out the same ratings from what I have read.
In 89 the cam design did change a little when going to mass air.
This also changed the torque ratings from
285 ft-lb @ 3000 rpm to 300 ft-lb @ 3200 rpm
I.O./I.C./Lift 17°/69°/0.278 to 20°/76°/0.278
Duration - Int/Exh266°/266° to 276°/266°
Overlap 36° to 39°
Thats thanks to Fletch's Carburated 5.0 Mustang website
http://www.jason.fletcher.net/tech/s...ons/specs2.htm
In 89 the cam design did change a little when going to mass air.
This also changed the torque ratings from
285 ft-lb @ 3000 rpm to 300 ft-lb @ 3200 rpm
I.O./I.C./Lift 17°/69°/0.278 to 20°/76°/0.278
Duration - Int/Exh266°/266° to 276°/266°
Overlap 36° to 39°
Thats thanks to Fletch's Carburated 5.0 Mustang website
http://www.jason.fletcher.net/tech/s...ons/specs2.htm
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