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4.6 swap

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  #1  
Old 12-04-2017, 05:33 PM
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Smile 4.6 swap

I have a 2008 F150 with a 4.6 engine that my brother ran out of oil. I have a screaming deal on a 4.6 out of a 2007 crown vic police car. What are the complications of interchanging them and is it possible?
 
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Old 12-04-2017, 06:10 PM
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Should be a straightforward swap. You will need to use the truck intake and exhaust manifolds, I'd also look at the oil pan and oil filter mounting.
 
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Old 12-05-2017, 01:04 PM
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Thanks for the input. I pick it up this weekend.
 
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Old 12-05-2017, 03:24 PM
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As long as the block is the same, shouldn't be much to worry about. I cannot remember what had Windsor or Romeo blocks, and when. Should be a wiki page on it somewhere. You will need to use your motor mounts.
 
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Old 12-05-2017, 03:42 PM
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Romeo and Windsor are interchangeable as long as you don't try to swap heads or some internal parts.

Count the bolts on the driver's side valve cover - Romeo has 11, Windsor has 13.
 
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Old 12-05-2017, 05:00 PM
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Front cover and accessories are different, aren't they?
 
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Old 12-05-2017, 05:53 PM
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Here are the basic differences in Romeo and Windsor engines:

# Romeo was the only Modular engine plant from '91-'95.
# Windsor came on line for '96 to build 4.6L and 5.4L SOHC engines for trucks and vans
# Although Romeo is primarily a car engine plant, it has produced Modular engines for trucks
# Although Windsor is primarily a truck engine plant, it produced Modular engines for '99-'00 Mustang GT
# Romeo engines employ different blocks, heads, and cranks than Windsor although they look similar
# Most Romeo blocks are marked with an "R" in the casting
# Windsor blocks are all marked with a "W" in the casting in two places
# Romeo heads employ bolt-on cam journal girdles
# Windsor heads don't have cam journal girdles, just individual journals
# Because Romeo and Windsor engines have different timing cover/cam cover bolt hole sizing, it is best to use Romeo heads and blocks together and Windsor heads and blocks together
# Romeo blocks have jackscrew cross-bolted main caps
# Windsor blocks have dowel pin cross-bolted main caps
# Romeo engines have primarily six-bolt flywheel/flexplate flanges
# Windsor engines have eight-bolt flywheel/flexplate flanges
# Oil filter/cooling neck types vary depending on vehicle type
# Timing cover depends on vehicle type
# Romeo cam sprockets are zero-fit and slip right on
# Windsor cam sprockets are pressed on
# Romeo cam covers have 11 bolts
# Windsor cam covers have 13 bolts
# Difference timing covers for SOHC and DOHC
# Same basic timing chain/sprocket system for both SOHC and DOHC
# DOHC engines have secondary timing chains for secondary camshafts
# SOHC has a standard oil pump and DOHC has high volume
 
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