Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
It's been done, but is overkill, IMO. Years ago a buddy had a 4-barrel - Holley I think but am not sure - on a Clifford intake on his 258. It had vacuum-operated secondaries and we couldn't confirm that they ever opened more than a little bit.
On the other hand 4-barrels were big on the 283 and even 265 C.I. small-blocks when those engines were the hot setup, but they would spin 6,000 RPM and beyond when properly set up - WAY beyond what a 258 should be asked to do. I doubt that mine has ever been past half that speed.