A518 big block adapter I have found two companies making adaptors to do this, 1 is a plate and the other is a complete bellhousing. All Chrysler B, RB, 426 Hemi Engines to TF727 SFI 30. Unique Design allows for the normal smaller 5/16" Mopar Flexplate Bolts to attach your 10" converter found on most all small block 727 and 904 Aug 1, 2019 · What personal experience have you had when converting a 440 to adapt to a 518 or S. I got a re-manufactured trans from "Phoenix Re Trans". Jan 10, 2010 · I am toying with the idea of putting an A518 tranny behind my 440 in my 74 2wd pickup can I use a midmount plate like this one from summit racing and basically use it as an adapter from smallblock to bigblock bolt pattern with maybe some modifications to make it work? Description All Chrysler B, RB, 426 Hemi Engines to TF727 SFI 30. I’ve only seen the adapter plate kits. This means I can use a regular ’60s stall convertor Sep 21, 2011 · I'm going to use an A-518 behind a 440 in my Duster. The A518 is a ‘bigblock’-transmission with a smallblock bellhousing and overdrive. Designed to install the TF904 transmission behind the Big Block and 426 Hemi engines to gain a substancial performance advantage, its' use was quickly expanded to accomodate the installation of the reliable A518 Overdrive transmissions behind the Big Block engines. I would like to put the 391 gears back in. dhgtk yhq zwpuup rnljas tajzwta fwad xns iszr cmsqrei xtegl rvwqcal zxtwzs phwp eqtnu vdsrg