• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Engine swap
#1
Need some information when swapping my inline 6 for a 302 on my 72 coupe I need to know what I'm in for and what I need to make it happen any help or advice will be appreciated thank you
  Reply
#2
Welcome from CA!

If I were in your shoes I would rather swap in a 351C or even a 460!

A 302 is a good motor but hey bigger is better IMO.

Paul

73 Grandé
351C 2v
Now 4v Carb/Cam/headers/T5


Gasoline is for washing parts.
Alcohol is for drinking.
Nitomethane is for racing!



Work in Progress photos here:
Last Update: 4/23/16

http://s1270.photobucket.com/user/theroc...t=3&page=1






















  Reply
#3
I was looking into a 351cleavland I just need to know what changes as far as transmission and engine mounts rear ends stuff like that I have a 302 I just need to know what has to change
  Reply
#4
I do not have much exeperience with 6 cyl's, but these Mustangs have mounts on the frame that differ between small block and big block. I am guessing that the six might share frame stands with the small block? You would then only need a pair of engine mounts for a small block (302, 351 etc. use the same engine mount).

Transmissions I think have the same bellhuosing pattern from six to small block, but a trans built for a six will not live behind a V8.

As far as rear ends, anything that left the factory with a 351 cu. in. Or larger engine got a nine inch rear. I would not worry about the rear end until you are making enough power to break the eight inch...

There are many other supporting components that are different as well.

If you six car is nice enough that you want to keep it and not sell it and buy a V8 car, consider buying a parts car that has the V8 driveline that you want in it. It will save you having to search out all the parts individually.

Good luck!
  Reply
#5
Awsme72coupe;285410 Wrote:Need some information when swapping my inline 6 for a 302 on my 72 coupe I need to know what I'm in for and what I need to make it happen any help or advice will be appreciated thank you

Should be a fairly easy swap. What tranny are you running? The 6 cylinder should be same bolt pattern and small block. You will need to buy motor mounts, but the frame mounts should be the same. You should even be able to use some of the front accessories with the right brackets..... power steering pump, alternator. You will need an exhaust of course. But overall should be a pretty straight forward swap.
And if you have a c4 trans behind that 6 cylinder.....don't be scared! I have a c4 that's been abused for years and im pushing 600hp.

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
  Reply
#6
What you will need to do depends a lot on what you want to do with the car after the transplant and what kind of horsepower you want. You may need to replace the radiator, transmission, and rear end. The driveshaft will most likely be the wrong length. You'll need a new exhaust. You'll probably want to upgrade the brakes. As Kevin said, you'll be able to use your existing engine accessories.

Finding a donor car would make the whole process easier.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
  Reply
#7
Thank you guys very much in going with a 302 for now I'm going to stick with a 70s street machine look everything on this car will scream 1976 lol I appreciate all your help I'll be sure to keep you guys posted
  Reply
#8
I plan on using the same transmission would I still be able to use the same driveshaft
  Reply
#9
Awsme72coupe;288923 Wrote:I plan on using the same transmission would I still be able to use the same driveshaft

If you use the same tranny, nothing from there back will change. You can use your original driveshaft. That car will have an 8" rear end instead of a 9" It will be just fine behind a 302. If you are not pulling the trans, you won't have to touch anything from there back, leave the driveshaft in the car. What year is the 302?? Make sure you have the correct flexplate. older 302's used 28 oz and newer ones used 50oz if I remember correctly. Also make sure you count the teeth on your old flex plate. They come in either 157 or 164 tooth. You want to make sure the 302 flexplate matches your old 6cylinder one. Your old starter will work if you get the proper flexplate. Let us know if you have any more questions.

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
  Reply
#10
So here is a update I have decided to go with a 302 5.0 H.O. it's comming out of a Lincoln mark 8 I'm getting the whole car so I plan on keeping it fuel injected I'll have the ECU and transmission so I get the overdrive for highway driving what are some of the things I will have to modify in order for this engine to work
  Reply
Share Thread:  


Possibly Related Threads...
Thread Author Replies Views Last Post
  Post your burbling bit (Engine) 1sostatic 4 195 Today, 01:20 AM
Last Post: 1sostatic
  Headers to fit '72 Mach 1 w/400 engine MeanMachine 7 186 Yesterday, 04:25 PM
Last Post: donkost
  351C 4V - 72 Mach 1 Engine fan baz70 16 495 02-21-2019, 09:13 AM
Last Post: Stanglover
  Engine/dyno/speed programs mbrew2 3 217 02-03-2019, 09:28 AM
Last Post: c9zx
  73 302 ro 351w swap now transmission noise samckay 17 607 02-02-2019, 04:10 PM
Last Post: tony-muscle
  302 engine identification & specs rjpohl 5 291 01-10-2019, 08:22 PM
Last Post: Hemikiller
  pull engine and trans as a unit? scgamecock 46 1,304 11-28-2018, 02:36 PM
Last Post: Fabrice
  engine oil Driven HR1 15W50 Nige 10 486 11-27-2018, 02:41 PM
Last Post: Fabrice



Users browsing this thread: 1 Guest(s)