How about 'I don't know' for an answer?

I'm pretty sure the bellhousing attached to the 270 will not fit the 292. I don't know if the bellhousing between the 292 and that 5-speed will fit the SM420.

I'm quite sure you can get a bellhousing for the 292 that will bolt to the SM420. I say that because the SM420 was still used into the middle '60's. You'd need one from about '63 to maybe '66.

The question is will that bellhousing bolt to the crossmember in the '58. I'm sure it could be adapted.

I know I haven't helped much, but I hope my little bit of knowledge will help you get the answers you really need...


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...