Any place there is a vacuum hose, under the hood and under the dash. Also the Power Brake Booster hose. The Booster diaphragm may also be busted. An Intake Manifold Gasket or the Intake Plenum gasket are sources of a vacuum leak.
355
4.030
355
One possible answer is 1 unit * 1 unit * 355 units.
Bore it .030 over. A 350 has a 4 inch bore. When you go .030 over, the cid., becomes 355.
a 357 Chevy is a just a smallblock 350 Chevy bored .040 over for a total CID of 357, just as one bored .030 is a 355 Chevy. a standard rebuilt 350 is generally bored out during the rebuild process to usually 355, sometimes 357. right now i have a 357 Chevy in my 1970 chevelle
355 is a non stroked just bored 4.030 over 383 on the other hand put a 3.75 stroker crank and bored honed so i would pick 383 . 355 is bored not stroked clearence for stroker crankbest engine would say is 383
355.
The so-called 355 was simply a 'bored out' 350, so it could be made any year that 350's were available.
Its a 355 cubic inch
Too many variables.
have the cylinders bored .030" oversize and fit it with new pistons.