Chrysler 360 w/ W2 Econo Heads, Headers, 30.over

If you want to know what your rear end gearing is,,,,it's a 1/2 hour job with nothing more needed than 2 jack stands and a chalk ( a pint of pilsner is optional) 1) Put your rear end up on the jack stands till the tires clear (don't forget to chock the front) 2) Put your tranny in neutral. 3) Chalk your driveshaft at 6 O'Clock (easier to read) 4) Chalk your tires (12 O'Clock usually works best) 5) Rotate your back tires slowly only one turn counting how many rotations your driveshaft rotates. This will give you a pretty accurate rear end gear...Here are some numbers to help ( keep in mind these are rough numbers 'cause Mopars never stop on a dime !!! 3 1/4 = 3.23 ....3 1/2 = 3.55 ... 3 3/4 = 3.73 .... not quite 4 = 3.90 4 and a bit = 4.10 or 4.11 .... you get the picture????? easy as pilsner oh I mean pie!!!! Hope this helps the others help you....I'm not a carb guy....but I will say the my Edelbrock 600 SP works great on my 76 Valiant (HANG 10) 318 with 340 heads Hooker long tubes edelbrock 484 lift cam ..18 mpg on highway and 13 city with a less the 10 second 1/8 mile!!!!! Hope this helps