302 Heads

Reply Subscribe

Thread Tools

Search this Thread

Jan 2, 2009 | 08:34 PM

xlrs

Thread Starter

Senior User

Joined: Jan 2004

Posts: 138

Likes: 0

302 Heads

Hello All,
Can anyone tell me if 69 302 Bronco heads will fit on a 73 or 74 302?
Any help would be greatly appreciated.
Thanks
xlrs

Jan 2, 2009 | 09:12 PM

RCrawler

Postmaster

Joined: Dec 2002

Posts: 3,594

Likes: 2

From: Southern Oregon USA

They will physically bolt on. There may be a combustion chamber size difference between the early and late heads. I can't find my information about later model 302's after '71. But if the engine is stock, a small increase in compression will not hurt.

Jason

Jan 2, 2009 | 11:33 PM

85e150

Super Moderator

Joined: Apr 2004

Posts: 34,471

Likes: 2,799

Check your casting numbers against this:

Cylinder-Head Casting Numbers

Also note '73-'76 has a slightly taller deck to lower compression (to fight Nox before they figured out EGR).

Also, not sure when pedestal rockers came into play, but be careful if you change from one to the other. If the older ones have adjustable, you can probably use the pushrods from the older engine. Check this out before you run it.

Kelly hotrod - Ford Engines Page 2

These two links and other info are at the top of the SB forums.

Jan 3, 2009 | 01:35 PM

RCrawler

Postmaster

Joined: Dec 2002

Posts: 3,594

Likes: 2

From: Southern Oregon USA

Quote:

Originally Posted by 85e150six4mtod

Also, not sure when pedestal rockers came into play, but be careful if you change from one to the other. If the older ones have adjustable, you can probably use the pushrods from the older engine. Check this out before you run it.

Kelly hotrod - Ford Engines Page 2

.

Rail rockers were introduced around '66. In the mid 70's, the studs were changed to the positive stop style. But neither should not be a factor here. As long as you match the rockers/ pushrods to the cyl head style, you will be fine.

Jason