I haven't lost any bottom end with the 1/4 turn, but at a 1/4 turn they will need adjusting sooner with wear, or bad oil. Bottom end is all about advance curve kits in your distributor. Back in 82, in highschool with my 455 66 Tempest, I put a set of Sorrenson cross cut points and an advance curve kit in. With the heavy springs it dogged out of the hole, with the light springs it was a tire shreader, all the diference in the world. I don't know what todays gas will do with all the initial advance, ping like hell I suppose. Pontiacs make power down low, so all in worked and made a lot of power. I was a hero in highschool with my 2 barrel 455 with a 70 GTO rear w/3.55 gears, that car smoked almost everyone I came up against, but I didn't race grown ups with "real" cars.
Oh, that reminds me, maybe I have a kill story for the other thread, funny as hell. Or, I'll give the cliff note version here:
1984, Buddy had a 70 442 w/455, paid $1000 for it, me, 66 Tempest 455, paid $450, we are on a 3 lane going to the capital in Madison, 70 Cutlass pulls up between us with a full roll cage and two mid 20's guys in it (grown ups), drag strip ready. Game on, light turns green and my buddy and I both smoked the Cutlass and left him by a couple car lengths, my buddy nosed me. Guys in the Cutlass didn't even look at us at the next light, guess there 350 with a cam was no match for CID!!
Last edited by jetstang; 03-31-2010 at 08:58 PM.