I bought a 350 out of a pickup truck, It was not the original motor, the owner bought the truck after the swap. There for i dont know exactly what I have. The block casting number comes back as an 86 350 2blt 1pc seal. the heads casting number comes back as 87 305/350 1.94/1.5 valves. they are cast iron center bolt heads. My problem comes down to ordering an intake. The intakes all say 55-86, or 87 and up. which one do I order??????????????????

 

Center bolt valve cover heads are 87 and up, that's what you're fitting the intake to. The difference is 2 the center bolts on each side. The 87-up are more straight up and down as opposed to the other bolts being angled. You can make an 86-older intake work on your engine by egging out those holes on the intake, but it's not the "right" way of going.

 

Thanks
Thats what i needed to know