im not saying that my small block is the baddest ever but its a stout piece. 394 cid, R3 48 degree block, diamond cyl heads, compression is at 15.2, custom ground comp cams roller, crower lifters, belt drive, ext oil pump, sheetmetal tunnel ram with a single prosystems dominator and a 1" hvh 4 hole spacer, on the dyno the engine made 847HP@ 8100 and 597ft lbs @ 6200. we then put a 1" open spacer under the hvh and it picked up 9HP TO 856 and moved the torque up a couple hundred rpms. that was with out a vacuum pump. it should pick up 20 to 30 HP with a vacuum pump. in a 3000 lb duster with a 4spd im lookin to go 8.80s. hopefully with great track and weather conditions and no driver error 8.70s. thought i'd share that since i love small blocks. all i ever owned was 340s!