engine swap from 4.6 3V to 5.0 coyote?
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Joined: December 14, 2007
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From: State of Jefferson Mountains USA
The cam and the lifters are buried in the V in the middle of the block just above the crank so the sound of the cam action isn't up top like an OHC. Added to the fact there are 24 valves & roller followers working on the 4.6L SOHC 3V instead of the more typical 16 on a single cam OHC (8 in/8 ex) or Pushrod for that matter. A modern refinement of the all powerful 427 'SOHC Cammer', the monster of the 60's. Ahead of its time IMO.
Here's your 3V cam with the finger followers reaching the intake bank of valves as well as the exhaust bank of valves from just one cam (per bank):
And here's the view of the underside of the cylinder head. 2 intake valves, 1 big exhaust:
If Ford would have put the same level of engineering into breathing on the 3V head that they did on the new 5.0 4V head, I don't think there would be the 100hp difference. Because the 3V has less moving parts to push compared to the DOHC. The better breathing and the higher redline is a much bigger factor in the 5.0L/302's 420HP than the mere .4 liters/21 cubic inch increase over the 4.6L/281 IMO.
Here's your 3V cam with the finger followers reaching the intake bank of valves as well as the exhaust bank of valves from just one cam (per bank):
And here's the view of the underside of the cylinder head. 2 intake valves, 1 big exhaust:
If Ford would have put the same level of engineering into breathing on the 3V head that they did on the new 5.0 4V head, I don't think there would be the 100hp difference. Because the 3V has less moving parts to push compared to the DOHC. The better breathing and the higher redline is a much bigger factor in the 5.0L/302's 420HP than the mere .4 liters/21 cubic inch increase over the 4.6L/281 IMO.
Last edited by cdynaco; Oct 15, 2013 at 11:01 PM.
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GT Member
Joined: September 23, 2013
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From: Stockton
The cam and the lifters are buried in the V in the middle of the block just above the crank so the sound of the cam action isn't up top like an OHC. Added to the fact there are 24 valves & roller followers working on the 4.6L SOHC 3V instead of the more typical 16 on a single cam OHC (8 in/8 ex) or Pushrod for that matter. A modern refinement of the all powerful 427 'SOHC Cammer', the monster of the 60's. Ahead of its time IMO.
Here's your 3V cam with the finger followers reaching the intake bank of valves as well as the exhaust bank of valves from just one cam (per bank):
And here's the view of the underside of the cylinder head. 2 intake valves, 1 big exhaust:
If Ford would have put the same level of engineering into breathing on the 3V head that they did on the new 5.0 4V head, I don't think there would be the 100hp difference. Because the 3V has less moving parts to push compared to the DOHC. The better breathing and the higher redline is a much bigger factor in the 5.0L/302's 420HP than the mere .4 liters/21 cubic inch increase over the 4.6L/281 IMO.
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Joined: February 8, 2004
Posts: 3,399
Likes: 7
From: Cincinnati, OH
If Ford would have put the same level of engineering into breathing on the 3V head that they did on the new 5.0 4V head, I don't think there would be the 100hp difference. Because the 3V has less moving parts to push compared to the DOHC. The better breathing and the higher redline is a much bigger factor in the 5.0L/302's 420HP than the mere .4 liters/21 cubic inch increase over the 4.6L/281 IMO.
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Joined: January 13, 2005
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I personally wouldn't drop 8k for the 5.0 motor unless it was built.
Those motors are high compression and I wouldn't feel comfortable doing any kind of blower addition to a 5.0. That's just me of course.
I put the 5.4 in my car and am extremely happy with it.
But that was after I pushed the limit of my 4.6 with a Saleen blower.
I'd feel more comfortable modding the 4.6 than the 5.0 just because of the compression ratio.
Those motors are high compression and I wouldn't feel comfortable doing any kind of blower addition to a 5.0. That's just me of course.
I put the 5.4 in my car and am extremely happy with it.
But that was after I pushed the limit of my 4.6 with a Saleen blower.
I'd feel more comfortable modding the 4.6 than the 5.0 just because of the compression ratio.
I Have No Life
Joined: January 30, 2004
Posts: 10,446
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From: Canada
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Joined: January 13, 2005
Posts: 1,339
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If I had 5.0 to begin with then I might... but I don't know, after hearing about the #8 piston issues I'm not sure.
But in his situation he could drop the same amount of money (or near it) for a 5.4 setup with a blower already attached and make more power stock than he would if he bought the 5.0 then spent another 2k on a blower.
But in his situation he could drop the same amount of money (or near it) for a 5.4 setup with a blower already attached and make more power stock than he would if he bought the 5.0 then spent another 2k on a blower.
I Have No Life
Joined: January 30, 2004
Posts: 10,446
Likes: 12
From: Canada
If I had 5.0 to begin with then I might... but I don't know, after hearing about the #8 piston issues I'm not sure.
But in his situation he could drop the same amount of money (or near it) for a 5.4 setup with a blower already attached and make more power stock than he would if he bought the 5.0 then spent another 2k on a blower.
But in his situation he could drop the same amount of money (or near it) for a 5.4 setup with a blower already attached and make more power stock than he would if he bought the 5.0 then spent another 2k on a blower.
It's a pretty solid setup.
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