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Author
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Topic: Swapping a newer V8 into an old stang.
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mikesmustang
Journeyman Posts: 9
From: Bountiful, Ut, USA
Registered: Oct 2003
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posted 12-19-2003 11:44 AM
   
I have an 1991 Mercury Grand Marquis that has a tranny that is about to go out. I was wondering if this 5.0 v8 is the same that is in the 5.0 mustangs, and if it could be swapped into a '65 mustang that has a I6. If there are any websites that have more details our any thoughts from any of you then it would be much appreciated.
Thanks for your time.
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V8 Thumper
Gearhead Posts: 3936
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 12-19-2003 11:56 AM
https://mustangsandmore.com/ubb/SteveAdelmannV8Conversion.htmlBottom of this page is a 'Tech Articles' button for lots of cool info  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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SteveLaRiviere
Administrator Posts: 36138
From: Saco, Maine
Registered: May 99
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posted 12-19-2003 01:10 PM
They aren't the same, the Mustang 5.0 is a High Output, with a hotter roller cam, double roller timing chain, forged piston in some years, better intake, different computer, etc.------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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Tom G
Gearhead Posts: 243
From: Bethlehem, Pa USA
Registered: Nov 2001
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posted 12-19-2003 04:29 PM
Do you want the FI? If so find a donor 5.0 mustang. Moneymaker did have a 88 5.0 harness and computer for a Mustang you could do the changeover that way or just put an intake and carb and change the cam to something alittle hotter ie: FRPP B-303 cam or E-303 roller cam. Justa My $.02
Should be very doable either way.------------------
67 Mustang F/B 302 GT-40X FMS Crate engine 5 spd cable clutch 13.39 on 205/70/14 BFG @104 mph Flowmasters X Pipe 4.11 9". Body shop NOW! 03 Focus ZX3 BORLA exhaust Wings West spoiler (Arrest ME RED)
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67coupe
Gearhead Posts: 439
From: dallas NC usa
Registered: Nov 2000
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posted 12-20-2003 11:22 AM
it is a roller motor but has cast pistons lousy heads but on the good note u got a roller block one piece rear main seal  if u want to go carb id just change the cam and run it if ur not happy with the power get better heads later ------------------
Josh
67 coupe with 351c (currently broke:( )
8.41 in the 1/8
1.90 60'
at 82.03 mph
94 Explorer
30 model A currently rustbucket
in process 67 convt with efi 5.0 and t5
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stangpainter
Journeyman Posts: 4
From: Parker (Dallas), TX, USA
Registered: Oct 2003
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posted 12-27-2003 01:48 PM
I am about to do the same conversion with an 88 Crown Vic motor. They are rated at 150HP instead of 225. It's still a better motor than a stock 289/302 IMO. Remember cars are now rated at the flywheel, not the rear wheels like they were back in the 60s. After you get it installed you can always change it over to the 5.0 intake and mass air system. You will learn so much about EFI, and your car will run better and get more milage. I plan on keeping the AOD also. You should rebuild yours (AOD)and install it. Lstar
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Convertible Ken
Journeyman Posts: 3
From: Pleasanton CA
Registered: Oct 2003
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posted 12-28-2003 12:04 AM
All advice above is good. Save or install the engine. Definitely keep the AOD...plan to rebuild it yourself. Seriously, it's not that hard. Buy the Tech manual by Haynes. I did mine and swapped it in with no problems. Took it to the local trans shop for TV cable adjustment.Also, if it has rear drum brakes, save the all the parts and swap them on your mustang. Everything fits. Have to pull the c-clip axles, easy. Start with the backing plate and save all else. Direct swap...40% more pad area. God love those Grand Marquis and Crown Vic's. It's sad to see all that luxury rotting in the noon sun at a pick-a-part yard.
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