rpm air-gap is a little to much intake on a stock 318

the LD4B is the best intake for a 318. if has been ported to the 340 size opening. just use a fiber 340/360 gasket felpro 1213

that intake wakes a stock 318 up real nice. I used a 660 eddy carb on mine.

it also worked great on the 360 headed 318 police engine I have.

watch the truck axle/carrier/c-clip/wheel bolt pattern change in 85 when sorcing parts to rebuild the 8 1/4 9 1/4 truck axles.