Sbc To Bbc Help

[70rs/ss]

OK, BBC abd SBC will both mount to SBC mounts, but as you found out the headers hit. The BBC frame mount from 71 and down will work with the same motor mount as the SBC and the headers will clear. The 72 only BBC mounts is very similar to the 73 and up clamshell mount and it too will mount to your frame (may need to drill a new hole in the frame to get the frame mount bolted down) and it too will work with headers. I would use 73 and up mounts, replace the "inside" of the clamshell with urethane mount as the BBC will want to twist and mush the stock rubber mount. 73 and ups are a throw away from wreckers, get the flat plate frame mount that the clamshell bolts to and the motor side of the mount then you'll be done and the clamshells DO NOT SEPERATE if they fail like the SBC perch does, so it is safer in the long run, long winded but the best I can do good luck!!