yes all sbc manifolds will fit, when you get to cyl heads then you will have trouble since most aftermarket are for 350 bore which is larger
the water jackets are different , the motor will keep running hot
there is no adapter. vortec heads were cut at a diffrent slope than standard sbc heads. you can swap the heads on the 78 350 for vortech heads or get a multipoint fuel injection intake for a 85 - 95 350. you can get the intake from summitracing.com You will have to swap the heads and the intake
The main journals need to be turned down.
350 chevy with aluminum heads and intake carb and headers weigh
There are a variety of places where one can purchase SBC aluminum heads. One can purchase SBC aluminum heads online on the eBay website, and other retailers as well.
Yes.
yes
yes but it has to be 83 or newer
No. Standard 350 engines have 4.00" pistons, standard 400 pistons are 4.125".
its about 350
It should work well.