[bubba428]

well the 302 had a 3in stroke the 327 had a 3.25in stroke and the 350 had a 3.48 in stroke, all with 4.000 in bore and were used in the same block. as far as I found theres only 1 other block that was used solely for 327s, so just going by block number he could have an engine that could be bigger or smaller than he expected. if it were, that then would throw off his fuel injector sizing and would cause the engine to run improperly.