takeoutexodus

Hmm i see , Cuz then when you think of It , How ofter are you going to go faster than about 60? on a street drag ? .

Btw, Anyone know how to calculate some 0-60 times on these cars ?

ok so lets be hypothetical , We knocked out the 351 and now we have either 302 EFI or 302 carb?

Is it worth the extra work ?

I seem to like the looks of the carb'd car , but the fuel efficiency and increase in selection like PCU power mods intrigues me on the EFI .

takeoutexodus

when you say decent mileage , I cant help but ask for ###'s

67mustang302

Just build a carb'd 302 with good heads, a roller cam and a nice carb/intake combo, it'll run nice, make plenty of torque and with good gearing get decent mileage and be quick. Build a badass motor later, or put a supercharger on it if you want more power down the road. Don't try to do everything all at once.

As far as 12's, my carhas the power to run12's, but with the gearing I have right now it overloads the clutch and it slips a bit outta the hole, so it can't pull better than 2.1xx 60's. With the right gearing and a 5spd it'd go mid-high 12's on street tires, with LESS than 400hp AND it drives really well on the street and gets good milage. Look at my sig, there's more to going fast than just horsepower.

You could also build a mild 351 and have a bit more power but a bit less mileage. Again, if you go with a 5 speed and decent gearing, like a 3.55, then it'll still get good milage. Just use a modest cam, decent little heads and a mild carb with a low rise dual plane intake. A 600-650cfm carb would do it. As long as you drive easy the mileage will be ok.

Jakaru

If I had the money I think I'd go with a 302 efi but with an engine with less than 20k miles I can't justify it to the wife. You'll have to ask around for numbers and I'm sure someone would give them. I think you can get decent milage and decent power but 3k doesn't seem quite right for an efi swap and new gears and new transmission to get you mpg and power.

67mustang302

Mileage depends on engine build, gearing and how you drive. I generally get like 15 city and 20-22 highway, but I don't drive like an old lady either and only have a 4 speed Toploader. I personally like 5.0's because they take a whipping, and you can go EFI + supercharger to get monster power, but the small displacement as far as V8's go makes for decent mileage. With EFI you can get 25mpg highway without too much trouble, as long as you build the engine properly(ie no monster cam and monster heads etc).

gothand

There's too much damn common sense going on in this thread. Kumbaya!

takeoutexodus

No , 3k was just for the Engine .

I was talking to JamesW and he said he did his whole swap for about 2k all around for 302 EFI including tranny and fuel cell etc. .

I was like daaaang! ..

So i was thinking putting around high 2k to 3k tops to my engine .

My guess for best mileage plus power is 347 EFI ? But i hear those things break really easily .

I plan on going to a junker and getting a 90-92 fox HO engine if i do go EFI .

im going 9 inch rear ,

And the whole project . I dont plan on getting this car rolling in a long time .

Its going to be done right the first time!

What kind of hp and tq should i be pumping with some new internals (stroker) and new heads.

Then comes the rest.

takeoutexodus

Ok , So now that i realize i was way over my head .

My mind is on around 350 hp 375 tq .

Which seems easily do able .

Mr. EFI ? What do think about a Stroked EFI ?

Do I need to stroke for the 350 hp ?

my77stang

what about a 289 with an EFI setup from a 302? you'd get killer milage, and it would be peppy as hell for driving around with nothing more than a slightly larger than stock cam, and some GT40 / GT40P heads.

Mr. Classic EFI

As far as EFI, I dont think it'll ever pay for itself, but to give an example, on a recent trip to Dallas, from the Florida panhandle & back, I was travling with 2 other V-8 65-66's, both carbed. My fuel bill difference was enough to pay for one of the nights in the Hotel. That trip I got a best of 28mpg (steady 65mph) with an average of 22-23 at Interstate speeds75-85. Kinda nice.
For you it'll prolly be easier to go with a good 600cfm carb & maybe an air gap intake. Then later if the budget allows & you decide you want it, do the EFI conversion.
I did my EFI just to please my self, just because I wanted to. Not because I really expected to reap huge fuel savings, though gas is getting rather pricey.That said, now that its done, do I like it?? Oh Hell Yeah.