FastCounter by bCentral

To use this Chart
1.	From Table I: confirm original displacement. Block deck height should be 9.98".
2.	From Table II: select crank-shaft type in Column 1.
3.	Confirm stroke length in Column 2.
4.	Select your connecting rod length in Columns 3, 5 or 7.
5.	Nominal piston compression distance for ".000" (zero) deck height appears in the intersecting box. For closed-chamber heads (Max Wedge, 915, Stage V & VI, Indy, etc.) see Note 6 (below). For open-chamber heads (906, 346, 452, etc.) add .100" for ".000" deck, see Note 7 (below).
6.	Closed-chamber heads: actual piston compression distance must be adjusted (+ or -) to allow for gasket thickness, desired quench distance, compression ratio, chamber volume, etc.
7.	Open-chamber heads: the dome recess in most heads is approximately .100" deep. The actual piston compression distance must be adjusted (+ or -) to allow for gasket thickness, desired quench distance, compression ratio, piston dome clearance, chamber volume, etc.

Notes
1.	Requires either: reduce main journal size to 2.625", or line-bore mains for RB bearings. Block must be clearanced, and/or counterweight OD reduced to 7.25" OD
2.	This is (generally) the largest increase that can be achieved by offset grinding to the BBC 2.20" rod journal diameter; sizes between 3.575" and 3.925" are (theoretically) possible. Rods used for this purpose generally use the BBC .990" piston pin size.
3.	Longest stroke that clears internal oil pickup tube position.
4.	Std. B connecting rod length, center to center
5.	BBC +.250" special length rod by Probe, Eagle, etc., center to center
6.	Std. RB connecting rod length, center to center

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