Will heads from a 66' 289 fit a 302 motor ?

sean35 · 02-06-2005

Hello to all, I am new to this forum and building engines, so bear with me! I currently have a 289 block from 1966, the block is cracked so I am going to buy an already built 306. My question is...will the 289 heads from 1966 work on the 1994 306? I want to do this because the heads have already been gone through (porting,springs,rollers). Please help!

GhostDog 5.0 · 02-06-2005

Yes they will bolt right up. I am not sure about the headers though, might be small ports or slightly different position. But 351 heads will also work on the 302 with different head studs.

wilit · 02-06-2005

The only thing you'll really need to worry about is the center water cross over passage is different between pre-'87 heads and post-'87 heads. Depending on what intake manifold you go with, you might run into sealing problems.

sean35 · 02-07-2005

Is there a specific intake manifold you know of that will prevent those sealing problems? Thanks for your responses!