bbc main bearing clearance with aluminum block????????
On an aluminum block with billet steel splayed main caps, does the main bearing bores get tighter or looser when heated up to operating temperature ? Would you just shoot for the same clearances as on an iron block?
Therefore, what main bearing clearance is desired?
Application being drag race, recreational marine use, fresh water , cold block temps of 100-130 degrees operating temperature.
Also being turbocharged. thanks