Thread: 302 what heads 351w 289?

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You're looking for C9OE or D0OE parts. '69 and '70 351 4bbl heads. I have 'em on a couple 351's and love them. Don't know what they do to the C.R. on a 302, but they do breathe better than any other stock head. Sure, Windsor Jr's are gonna be better, but the $$$$ worth....?

Last set i priced from a guy a few years back for 69 heads where $250 for the set they where redone but had been sitting up a few years . He did offer a good deal i should have bought them .

You might check the wrecking yard for the GT-40P heads off of the Late model Explorers with the 5.0. They are great heads.

i think probably a better route to go for the best bang on a stock head would be a small chamber 289 head the 58cc heads, those 351 heads are going to drop compression on you a bit..... the 289 heads will bump it up a little, then with a little port work you could get the breathing as well as those 351 heads.... that or i have some d0oe 302 heads that already had the works done to them ported out, hardened seats, titanium valves, roller rockers, guide plates, yada yada.... but i cant let those go for cheap..... i put a lot of money into them

I took my last set of D0OE heads to the dump for the reasons below.

There is a lot more to using these heads. First of all, they are most likely "worn out" and will probably need valve guides, new valves, springs, maybe retainers and locks. Add in 16 new seats for unleaded gas plus a set of rocker arms. Then a set of screw-in rocker studs. Then, if they have the infamous EGR bump in the exhaust runner, you (or someone) will need to spend a bunch of hours grinding it out. They will have to be tanked then milled for levelness. If you mill them more then just a few thousandths for clean up, then the intake will have to be milled as well. All this will be more then a set of after market heads - not cheap.

If you can find a set of low mileage GT40P heads, this is the cheap way out. If not, there are many reasonably priced OK to great aftermarket heads that are all better then the D0OE's.

289 (most are 52 to 55cc) heads may bring your compression ratio to well beyond what you really need for the street and today's gas, 10 to 1 or more