Ken, the pistons are 60 over, with variation, but the expansion on forged pistons dictates much more clearance than cast. Reverse calculation looks like 4.078 bore, which for a race engine might be close to needed for forged pistons of the time. Certainly newer pistons are tighter clearances due to improvements, but a little googling found a few sites that indicated the higher clearances were possible. That's not to say the article isn't possibly stretched a little by rough calculations! Still, 414, 418, lotta cubes. Glenn Ford 87 all the way, Eagle wag auto, Eagle wag Ltd T5, Wagoneer XJ Ltd auto 4.0, Plus 85 Wagoneer XJ Ltd auto V-6 Date: Tuesday, March 7, 2006 09:31 PM From: Ken Ames <ameskg@xxxxxxxxx> So if its a .060 over 327 with 4" stroke - 4.06 x 4.0 - I get 414 cuin. :) Ken Quoting Tom Jennings <tomj@xxxxxxx>: > ... have been repaired massively by Scott Selleh, who took my taunt > seriously, downloaded the raw, damaged files, and fixed them. > > There are I think two missing pages, but most are functional, and look > great. Thanks to Greg too of course for putting these up. > > If anyone has a copy of the missing pages let me know. > > http://wps.com/AMC/Rambler-327/418-cid%20v8.htm