302 into a 66 Fastback

sparky79862 · 07-07-2007, 02:05 PM

I my looking to buy my first Mustang. I grew up under the hood of a 65 coupe and my father decided to sell her before i had a say in it. To make a long story short. I was offered a good price on a 66 Fastback 2+2. The car needs to be completely restored and so on. The problem is the motor. The person selling it stripped the 289 and threw the parts in a box, along with everything from the transmission. SO at this point the motor is just done in my opinion along with the trans. I have a friend that has a 5.0 liter, 302 sitting around. I know this has probly been asked a million times, but how hard is this swap. I plan on carbonating the motor instead of fuel injection. I am just looking for how difficult this swap will be. I have experience with motor swaps in Jeeps and Firebirds but never a classic mustang. Any information would be great thank you.

bmxmon · 07-07-2007, 06:24 PM

It would be just the same as replacing it with another 289, no problem. What are you using for a transmission?

sparky79862 · 07-08-2007, 05:36 PM

I dont know yet, both of the transmissions are bad. I want to covert the car over to a stick shift. SO if there are any suggestions of a good four or five speed i am more than willing to listen, in reality i dont know too much about transmissions in mustangs so any help would be great. My next question is will the 302 drop in or will it need new motor mounts?

bmxmon · 07-09-2007, 06:35 AM

Motor mounts are the same, the 289/302 are the same except the stroke. I would go with the 5spd (T5 out of an 87-93 mustang) if your going to swap over to a man pedal, though im not sure if the holes are all there already for it or not...

rwhite65 · 07-10-2007, 01:15 PM

5.0L will sit right in. I have that in my car as we speak

Gearhead999 · 07-22-2007, 09:13 PM

You'll have to run an electric fuel pump. The EFI 5.0 doesn't have anything for a manual pump.

Also, the balance is different. 28 oz vs 50 oz. You need to match the flywheel or flexplate with the balancer.

fender leo · 08-14-2007, 08:11 AM

hey sparky....what is the 289's engine block casting code?

07-07-2007, 02:05 PM	#1
sparky79862 Registered Member Join Date: Jul 2007 Posts: 2	302 into a 66 Fastback I my looking to buy my first Mustang. I grew up under the hood of a 65 coupe and my father decided to sell her before i had a say in it. To make a long story short. I was offered a good price on a 66 Fastback 2+2. The car needs to be completely restored and so on. The problem is the motor. The person selling it stripped the 289 and threw the parts in a box, along with everything from the transmission. SO at this point the motor is just done in my opinion along with the trans. I have a friend that has a 5.0 liter, 302 sitting around. I know this has probly been asked a million times, but how hard is this swap. I plan on carbonating the motor instead of fuel injection. I am just looking for how difficult this swap will be. I have experience with motor swaps in Jeeps and Firebirds but never a classic mustang. Any information would be great thank you.

07-07-2007, 06:24 PM	#2
bmxmon Registered Member Join Date: Mar 2004 Location: Minnesota Posts: 950	Re: 302 into a 66 Fastback It would be just the same as replacing it with another 289, no problem. What are you using for a transmission? __________________ Alex

07-08-2007, 05:36 PM	#3
sparky79862 Registered Member Join Date: Jul 2007 Posts: 2	Re: 302 into a 66 Fastback I dont know yet, both of the transmissions are bad. I want to covert the car over to a stick shift. SO if there are any suggestions of a good four or five speed i am more than willing to listen, in reality i dont know too much about transmissions in mustangs so any help would be great. My next question is will the 302 drop in or will it need new motor mounts?

07-09-2007, 06:35 AM	#4
bmxmon Registered Member Join Date: Mar 2004 Location: Minnesota Posts: 950	Re: 302 into a 66 Fastback Motor mounts are the same, the 289/302 are the same except the stroke. I would go with the 5spd (T5 out of an 87-93 mustang) if your going to swap over to a man pedal, though im not sure if the holes are all there already for it or not... __________________ Alex

07-10-2007, 01:15 PM	#5
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	Re: 302 into a 66 Fastback 5.0L will sit right in. I have that in my car as we speak __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

07-22-2007, 09:13 PM	#6
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: 302 into a 66 Fastback You'll have to run an electric fuel pump. The EFI 5.0 doesn't have anything for a manual pump. Also, the balance is different. 28 oz vs 50 oz. You need to match the flywheel or flexplate with the balancer. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

08-14-2007, 08:11 AM	#7
fender leo Registered Member Join Date: Aug 2007 Location: ontario Posts: 19	Re: 302 into a 66 Fastback hey sparky....what is the 289's engine block casting code?

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