Putting 305 heads on a 350 block might increase the compression ratio if the combustion chambers are smaller, and they might improve low end torque at the expense of top end horsepower if the valves are smaller. Not sure how that would effect crankcase pressure, if at all.
There are many places where one could purchase small block Chevy heads. Some of the best places to purchase small block Chevy heads at places like Amazon or Auto Zone.
right below the heads
a 350 is a small block those heads will fit on and Chevy SMALL block not a big block
Answer The 86 Chevy block and the 87 Chevy block are the exact same block, nothing changed, it will fit perfectly.yes
NO, not even close.
it will fit on any Chevy SMALL BLOCK of the same generation of your LT1
Cylinder heads are installed on a Chevy 454 big block engine by placing the gasket down on the engine block and positioning the heads over the marking tabs. The bolts are then installed and torqued to specs in sequence.
no
no they will not
305 heads of course, 350 heads will fit for sure and possibly 400. obviously no big block heads will fit. a 305 with 400 heads gets you a little over 352. 350 with 400 heads is a 383. add and divide
small block
lt1 is a 350