The 289 4V intake will do perfectly. Best to go with the C4OE-9425-B casting as it was used on the 64 Comets and early 64½ Mustangs. You can also used the C5OE-9425-A dated in May and June 64. This will be a direct swap for your 260 intake. Others will work as well, but could have different temperature senders, thermostat housings, or machining. The perfect 4V carb is 1.08 C4GF (stay away from the 1.12 C4GF's) and any C5ZF 4V. These were the best 4Vs ever produced. The 4V carb sits 1/4" more forward than the 2V, but you can easily adjust for that. This setup works equally well on the 221. There is a mismatch in intake runners with the 260/221 heads (4V intake larger), but will cause no problems. The 4V will wake up the 260 and make the engine pull harder in all rpm ranges. Fuel economy only affected to the degree of your lead foot.
For those who don't know, there is a new PDF version of "Mustang & Ford Small Block V8, 1962-1969" available at www.fordsmallblock.com. You can read all about it there.
Recommendations for best spark plug spec for a 302 needed. I bought the engine as a 'short' engine, with nothing on it, Inc plugs. I think it is originally from a 1980s truck, but it's now been completely rebuilt, and running a stage 2 cam (or was it stage 1?) along with a FiTech fuel injection...
I did a search, nothing posted within the past year on what p/n to use for plug wires that are the proper color and length.
Do these exist at a parts store, or mail order only?
I dont like to mail order plug wires because I want to see what Im buying.
I have a set I bought from RockAuto, love...
Trying to fix some of the numerous leaks on my car... I have new radiator hoses arriving this weekend. I found another leak near the back of the intake manifold. I've tried to figure out what the plug is leaking, but I cannot figure out what it is. Is this a common leak? What do I need to...
I'm preparing to shed off the winter tires and get into some new summer tires. When I got the winter tires, I didn't care too much on sizing since it was just to not spin out in the snow, and I think I went too large.
Car is a 68 coupe currently running 17x8" 4.5" backspace...
What do you cats recommend for a external fuel pressure regulator. I Installed a new Edelbrock
17301 external elect pump
Running 600 Holley DP running around idle reads 10 psi. Holley Max should be 7 PSI. Want to find some cool and compact. Let me know or show me your set ups