[Henry's Lady's Man]

Originally Posted by Terry, NJ

How much do you want/have to spend? 3.97 "will take one more resizing to 4.000", after that, you must sleeve. One of my engines is 4.000., .125 oversize. Just boring the engine increases the compression (Slightly). Also, it will increase the HP by a percentage. Bore it out 5% and you'll increase the HP by 5%. A bored out model A block (.125) is about 214-215 cubic inches, around 7%. Add a bored out manifold and a B carburetor to improve the breathing. I can cut .040 off a head for $40, Or I can go buy a Snyder's H C head for $300. Naturally the repro HC head will give you more oomph. But so will a $400 cam, or a supercharger ($xxx?) or a hundred other jobs that I don't really have the cash for.

Hey Terry,
So will a bore to 4.00 require different pistons or same stock pistons w different rings or stock size rings?