340 pushrod problem

340 T/A pushrods are 7.572 OAL (SP RP3159). 273 solids are 7.658 OAL including cup (SP RP3107). Solid lifters are deeper than hydros so that explains the difference. I got some pulls that measure a little over 7 3/8 that fit fine on Crane rollers and a .484 MP hydro cam. Your measurements will differ as rockers and lifters are not standardized across manufacturers. Best bet is to mock it up and measure, then have them made if they are radically different than stocked pushrods. I hear 2 threads out is correct on adjustables but its a builders call. Crane makes cup style adjusters too so you can run cheaper ball/ball pushrods. Can you shim your rocker shafts? You can make your own custom pushrods.... Cut down 16 slant six pushrods. http://www.forabodiesonly.com/mopar/showthread.php?t=297318