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Hi Everyone! Just got my first 66 Mustang!

  • Thread starter Thread starter SwayBetty66
  • Start date Start date Jul 28, 2025
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    66mustang first mustang

SwayBetty66

Member
Jul 28, 2025
5
3
13
Los Angeles
Jul 28, 2025
#1
  • Jul 28, 2025
  • #1
Hey guys, I’m new to restoration. And I finally got my dream girl… I wanted to ask of the group what is this meanest engine I can put in her without a ton of modification? I know I will have to upgrade all rear axle and brakes from drum to disc. She current has a 250 inline 6 and C4 transmission.
I would love to turn her into a Mad Max Sleeper. Also looking to keep all mechanic not really electric anything if possible. That’s my ultimate goal…
Be gentle I’m new
CC
 

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AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
5,899
4,022
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Claremore, OK
Jul 28, 2025
#2
  • Jul 28, 2025
  • #2
Super nice car man! 363 cubic inch stroker but would have to be a Dart block due to the bore and the power level. You can build the C4 to handle it or swap out to a manual transmission like a Tremec TKX. The laundry list of parts to support the installations would be pretty big so I hope you have a biiiig budget. Another way to go is a crate motor 347 which will be less $$$.

Really what you need to ask yourself if what is my goal. You should also realize that about the widest rear tire you are going to fit under the car is a 245 but I have read where you can stuff a 255 if you are willing to roll the fender lips. I have 275/40R17 Nitto 555R's on my Coupe with about 370 rwhp and its marginal on traction. This is with 3.73 rear gears.

Do some research and I think you will find that a 302 with heads, cam, intake, and good supporting parts will build enough power for a really nice street car and a Tremec T5 will live behind it.

Your dream so figure up what you want and if budget is not a concern then go for it.
 
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9T02R

Member
Jul 24, 2025
13
16
13
San Diego
Jul 28, 2025
#3
  • Jul 28, 2025
  • #3
SwayBetty66 said:
Hey guys, I’m new to restoration. And I finally got my dream girl… I wanted to ask of the group what is this meanest engine I can put in her without a ton of modification? I know I will have to upgrade all rear axle and brakes from drum to disc. She current has a 250 inline 6 and C4 transmission.
I would love to turn her into a Mad Max Sleeper. Also looking to keep all mechanic not really electric anything if possible. That’s my ultimate goal…
Be gentle I’m new
CC
Click to expand...
I owned and drove a 66 cyl automatic for about 20 years. Very reliable and easy to maintain. Only sold it when the 428 cj came along. Why not restore the 6 cy while keeping an eye out for the super modded car you really want? Brian
 
Reactions: SwayBetty66

SwayBetty66

Member
Jul 28, 2025
5
3
13
Los Angeles
Aug 7, 2025
#4
  • Aug 7, 2025
  • #4
AeroCoupe said:
Super nice car man! 363 cubic inch stroker but would have to be a Dart block due to the bore and the power level. You can build the C4 to handle it or swap out to a manual transmission like a Tremec TKX. The laundry list of parts to support the installations would be pretty big so I hope you have a biiiig budget. Another way to go is a crate motor 347 which will be less $$$.

Really what you need to ask yourself if what is my goal. You should also realize that about the widest rear tire you are going to fit under the car is a 245 but I have read where you can stuff a 255 if you are willing to roll the fender lips. I have 275/40R17 Nitto 555R's on my Coupe with about 370 rwhp and its marginal on traction. This is with 3.73 rear gears.

Do some research and I think you will find that a 302 with heads, cam, intake, and good supporting parts will build enough power for a really nice street car and a Tremec T5 will live behind it.

Your dream so figure up what you want and if budget is not a concern then go for it.
Click to expand...
I’m trying to keep her mechanical only, I love the idea of a stroker!! Someone suggested to just keep it intact for the moment cause the engine is good but add a four barrel carb in take and a nice exhaust which probably needs to be done anyway, but that would give it more horsepower with out killing my bank account for the moment? What do you think 4 headed aluminum intake?
 

SwayBetty66

Member
Jul 28, 2025
5
3
13
Los Angeles
Aug 7, 2025
#5
  • Aug 7, 2025
  • #5
Modified the C4 with a Raybestos race kit this weekend. Sandblasted and repainted. Hardest part was a snap ring until I figured out the head was in lopsided
 

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SwayBetty66

Member
Jul 28, 2025
5
3
13
Los Angeles
Aug 7, 2025
#6
  • Aug 7, 2025
  • #6
9T02R said:
I owned and drove a 66 cyl automatic for about 20 years. Very reliable and easy to maintain. Only sold it when the 428 cj came along. Why not restore the 6 cy while keeping an eye out for the super modded car you really want? Brian
Click to expand...
Show me pic of your CJ!
 

9T02R

Member
Jul 24, 2025
13
16
13
San Diego
Aug 9, 2025
#7
  • Aug 9, 2025
  • #7
SwayBetty66 said:
Show me pic of your CJ!
Click to expand...
 

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SwayBetty66

Member
Jul 28, 2025
5
3
13
Los Angeles
Aug 11, 2025
#8
  • Aug 11, 2025
  • #8
OMG What a beautiful ride. Congratulations on your dream car
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,115
21,288
234
Box behind Walmart
Aug 11, 2025
#9
  • Aug 11, 2025
  • #9
View: https://www.youtube.com/watch?v=LxXlrUwSEpc&t=967s


After the numbers sink in, take a look at the rest of video for the build.

They have a parts list (somewhat) in the Youtube description.
 
Reactions: Potomus Pete

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,115
21,288
234
Box behind Walmart
Aug 11, 2025
#10
  • Aug 11, 2025
  • #10
I found this while I was looking around too:

6 EFI Exhaust Manifold Turbo Kit Ford 240/300 - DFW Speed

Hot Side Kit includes: Stainless Steel Turbo Pipe that bolts directly to factory EFI exhaust - DFW Speed Syndicate
www.dfwspeedsyndicate.com

It's a different kit than the one above. No idea what numbers they make with it.
 
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