1965 Mustang 260 V8 Upgrade Options - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 10 (permalink) Old 02-16-2011 Thread Starter
Rookie
 
Noahs64's Avatar
 
Joined: Aug 2010
Location: Fayetteville
Posts: 28
 
1965 Mustang 260 V8 Upgrade Options

Hello,
I am hoping to get some new ideas for upgrade options for my 1964.5 260 V8. I have taken her up to about 50 MPH and I cant imagine her going much faster. She doesnt seem to have much left. I would like to think that someday I would be able to take her on short road trips on highways.
Here are the pertinent stats:

260 V8 engine
T 150 3spd Trans
8'' Rear axle with 300 gears

Only upgrades to date: Pertronix ignition system

I have though about dropping a newer 5.0 in or a 289 in while I tinker with the old 260 but if there are upgrades/mods I can do to make the 260 better, I would like to explore that option. I am not concerned with keeping her stock and I will be upgrading exhaust, 15'' rims/tires and putting newer suspension on in the next year.

Thank you for your help and insight.

1964.5 Mustang
Convertible, Red
completely stock
with 260 motor
Noahs64 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 02-16-2011
Apprentice
 
pickupman250's Avatar
 
Joined: Nov 2010
Location: enfield
Posts: 221
 
if you are going to upgrade to a 302 make sure it is a 87-93 roller motor

1967 coupe, 302, in progress
there is not problem to big or to small that cant be solved by the use of high explosives
U.S.M.C. 1371
pickupman250 is offline  
post #3 of 10 (permalink) Old 02-16-2011
BOSS Member
Classic Member
 
rex1965's Avatar
 
Joined: Jan 2010
Location: Pittsburg
Posts: 3,803
 
Most of the small block fords benefit from a dual plane aluminum intake and four barrel carb, I wouldn't go any bigger than a 470-500cfm, the 3.0 rear axle will be okay. It should run past 50 mph easy. Check your dwell and initial ignition timing, vacuum advance, and that the mech ignition timing is free to move, most people don't know to put a few drops of oil in the opening under the rotor in a ford dist. Check your spark plugs and gap, the plug wires. Dual exhaust will help. It might be time to overhaul the motor, do you know how many miles are on it? And if it is ready for a rebuild you might want to consider a 289 or 302 to rebuild. Good Luck.

Last edited by rex1965; 02-16-2011 at 11:10 PM. Reason: more info
rex1965 is online now  
post #4 of 10 (permalink) Old 02-16-2011
Made Member
 
PaulS's Avatar
 
Joined: Mar 2009
Location: Seattle
Posts: 1,815
 
One thing to keep in mind is that your block only uses a 5 bolt bellhousing so you will need to upgrade that with any engine newer than 65. The later blocks use a 6 bolt pattern that is not interchangeable with the older 5 bolt. Hang on to your 5 bolt stuff in case you run into someone looking for the old block for a resoration.
You could put a stroker kit in to the 260 using the 289 stroker crank but pistons may be a problem due to the smaller bore.

1966 Coupe
351W
Top Loader
rebuilt, rewired, modified for slalom and hill climb
No racing - just a fun car built by and for me.
Project in process
PaulS is offline  
post #5 of 10 (permalink) Old 02-16-2011
Apprentice
 
kb65's Avatar
 
Joined: Jan 2011
Location: macedon
Posts: 161
 
First find out why your 260 is not performing. A 260 is really not much differant than a 2v 289. As mentioned ck mechanical and vac advance in distributer. plugs, wires, timing and while the plugs are out do a compression test.
fuel pump pressure, vacuume leaks.

ken
kb65 is offline  
post #6 of 10 (permalink) Old 02-17-2011 Thread Starter
Rookie
 
Noahs64's Avatar
 
Joined: Aug 2010
Location: Fayetteville
Posts: 28
 
Thanks for the input. The old 260 only has 14K original miles but it sat for years in a garage and was neglected (service wise) while my Grandfather drove it (once a month tops for 15 years in summer). Ideally I would like to figure out how to get more out of what I got. At what point do you decide that a motor is ready for a rebuild? What measures are used to make that decision? What should the compression be= normal?

I have recently replaced the plugs, but im sure I will need to put new plug wires on in the near future. Thank you for your patience and insight.

1964.5 Mustang
Convertible, Red
completely stock
with 260 motor
Noahs64 is offline  
post #7 of 10 (permalink) Old 02-17-2011
BOSS Member
Classic Member
 
rex1965's Avatar
 
Joined: Jan 2010
Location: Pittsburg
Posts: 3,803
 
The cars and engines need to be driven, stuff will corrode and/or get stuck, such as brake pistons, parking brake cables, piston rings, plus warming them up and driving them produces heat, which helps dry them out. My rule of thumb for a rebuild, is if there is a lot of blow-by like out the breather cap, low oil pressure or engine knocking (excessive bearing clearance), low power (loss of compression) which also causes poor fuel economy, fluids leaking everywhere, gas,oil, antifreeze (gaskets hard and cracked and/or expansion plugs leaking). Good Luck.
rex1965 is online now  
post #8 of 10 (permalink) Old 02-17-2011
SHELBY GT 350 Member
Classic Member
 
Ivy66GT's Avatar
 
Joined: Dec 2008
Location: Albuquerque
Posts: 6,237
 
I can't imagine that a 260 Mustang with 3.00 gears couldn't top 100 MPH. There has to be something wrong with yours. Veronica drives one; I can't see her piddling down the freeway at 50!

Just pulled out a Car & Driver road test from May 1964. The road tested top speed of the new Mustang was: 260 w/ automatic 105, 289 w/ 4-speed 110 MPH. You don't need a new engine, you need to fix the one you have. With 14k original miles that is a fairly rare find these days.
Ivy66GT is offline  
post #9 of 10 (permalink) Old 02-17-2011 Thread Starter
Rookie
 
Noahs64's Avatar
 
Joined: Aug 2010
Location: Fayetteville
Posts: 28
 
Yes I think you are right. Rare indeed. It just sat for years in a garage without being started. It does leak from the rear main seal and what I think is the oil pan, and it also needs a new clutch (from oil blowing on the clutch Im sure). Im working on ordering a new clutch and will put that in when I get home. I have read alot of people like centerforce but i may just go with a stock Sachs or Luuk or whatever is cheaper. Im just cruizin not racing for sure.

Is this rebuild something I can do in my garage? What is the best kit (piston, rings, gaskets, etc) and does anyone have a 260 engine rebuild write up?
Thanks again for the help. I have minimal experiance but I am learning

Thanks

1964.5 Mustang
Convertible, Red
completely stock
with 260 motor
Noahs64 is offline  
PONY Member
 
David Suesz's Avatar
 
Joined: May 2008
Location: SE PA
Posts: 917
 
If it's only got 14k on it, it's extremely unlikely to need a rebuild. You can replace the rear main seal with the engine in the car. Use a neoprene seal, and make sure you take the nail out of the cap or you'll ruin the seal. For the rest, just do the entire routine maintenance list all at once. The brake cylinders are probably trash. Count on needing to replace most of the brake system. You don't wanna die saving a few bucks. If you do the work yourself, the brakes can't cost a whole lot.
David Suesz is offline  
Sponsored Links
Advertisement
 
Reply

Tags
260

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in









Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183