360 driver build

360 driver build

In addition to the above;

73charger said
so i read on a different forum, cant remember where, and they were talking about how to build a 360ci for high performance an get in the ballpark of 20mpgs. someone there said to build it to stock specs of a 340 for 70 or 71. they also mentioned getting J heads with a 1.88 intake instead of a 2.02, saying you dont want 2.02 for a street car.

so i was wondering why that is? y would one choose a smaller valve diameter over a larger one for mileage/performance. i want to do the same thing, build my 76 cordoba 360 to get about 20mpgs an 300+hp once installed into my 70 dart.

The 1.88 valve will keep the mix (Air and fuel) moving rapidly. This will help atomize the liquid better. Aid in torque production and a cleaner, smoother running engine at all engine speeds.

I don't think rebuilding a 360 with 340 specs will do it. The cars back then didn't get 20 mpg's with that type of build or intended gear ratio designed for it.

if anyone knows or has done this build with positive results, please post any numbers or brands i should look into. i know pretty much everyone is, but im on a budget of...well i dont even know yet! so the cheaper the better as long as its still reliable

thanks!

Do you plan on useing headers and what is your gear ratio.

I was able to get 20 mpg's from my '79 Magnum w/a 360 & 4bbl. But it was a stock engine with dual exhaust off the manifolds and a 625 Carter. It also had Hwy. gears. 2.76's (The car was emmisions leagal becauseit had to be. The dual exhaust also had twin cats.)