Do you mean the whole RE housing? The chunk? ( carrier and case w ring+ pinion,pretty sure this will not bolt in,its larger physically) or just the case itself bolts into the 61-4 housing? 57 to 64 Olds and Pontiac have larger axle bearings and 31 splines ,maybe it was 35? , 49 (I think) to 56 use a smaller bearing axle and less course splines, I used these in two of my old gassers. VERY TOUGH heavy RE's. Getting parts now is a serious problem mostly from Pontiac collectors as no new GM cases, pinion bearing ,crush sleeves ,spiders, caps ,or even case bolts are being made. bearings can be had from general bearing supply houses, but most are chineeze now. The Eaton is your only choice here as spools can be had, but are tough to find.(I THINK Zoom still lists one and Summit+Jegs list an install kit I think) Ring gear spacers are avail., but gear choices are limited. We discussed this at some legth awhile back on the HAMB. But nothing was mentioned about its use in 55-64 Chevy RE's, probably because we were talking drag racing Pontiac/Olds rears only. I may have some of this wrong, But I think I have the jist of it. I no longer hang out there, but they have this including paint dab info in their tech archives. Just curious as we have a 55 Pont. wgn., 64 Olds Starfire High Comp 394 rag top , several 60 Pontiacs and 62 2+2 out at the farm.
Last edited by 66SS427; 12-27-2007 at 08:42 PM.