Engine swap will it work
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hmmmmm good question. I know its rated with only 190 hp compared to the 260 a 01gt engine. The lincoln has about 40ftlb more tq tho. Don't know about the swap.
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From: Cleburne, Tx
Originally Posted by skunk21
Something to think about with the '91 4.6 and even '92 is it has a 5.0. bell housing pattern, horrible heads and iirc you can't do a PI cam swap on a 2V head '95 and older.
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I have a brand new crate motor for a 91 Lincoln and my 01 mustang has a rod knocking I was just wondering if I could swap heads and manifolds and make it work without touching the crank and pistons on the 91 motor
A Man Just Needs Some....
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From: Louisiana
I wouldn't do it man. Maybe try and work out a deal with an engine rebuilder and a trade for your crate motor. Not worth the work man. You can pick up a rebuilt bottom end for not much anyways. Just do it right the first time and no regrets.
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From: Mass
Using PI Heads On A NPI Engine:
When using PI heads on a NPI engine you're going to end up with a higher 10.5:1 compression ratio.
When using PI heads on a NPI engine you're going to end up with a higher 10.5:1 compression ratio.
Windsor and Romeo PI heads for SOHC 2-valve engines flow identically, but have different valve cover and timing chain cover bolt patterns, and different cam gear attachment styles (pressed vs bolted). Windsor PI engines came in 1999-2000 Mustang GTs, and Romeo PI engines came in 2001-2004 Mustang GTs.
The easiest way to add PI heads to a NPI engine is to use Romeo PI heads on a Romeo block and Windsor PI heads on a Windsor block. You'll need to use the valve covers that were on the new heads if mixing heads & blocks. The Windsor and Romeo heads use different valve covers. Windsor Heads/Valve Covers has 13 (driver side) and 14 (passenger side) bolts, and Romeo has 11 bolts.
You'll have to use a PI intake in your new PI heads. The NPI intake will not work.
Also make sure you get the coolant tube that runs through the valley. The PI is larger and sits deeper in the valley. The NPI tube will interfere with placement of the intake. The NPI thermostat neck is not compatible with a PI intake, so get the PI thermostat neck. The NPI alternator and PI alternators use different mounts at the top. You can modify the stock bracket and drill it to fit the NPI alternator, or buy a PI alternator and use a PI bracket.
Next is the coolant crossover tube. NPI cars have (2) temp sending units in the crossover tube on the intake. One is for the temperature gauge, the other is for the computer. You may need to drill and tap the PI intake to accept the second temp sensor.
Second, the PI heads use 10 mm accessory bolts. The stock NPI bolts are 8mm. The easiest solution is to search a junk yard for a PI motor and salvage the bolts.
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From: Mass
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