quick question OLDS 5A heads

[TURNA]

They were used on 350s in 1969.

View attachment 121216

Thanks!

 

[JAMCAR223]

Look over the center exhaust ports.. it looks like they say 397 742. If so, that's a 1969 350 head. Use them on your 403 😊

 

[TURNA]

Yes they would bump up the compression a little but I would have to drill the head stud holes to 1/2 inch and open up the alignment dowel holes

And since they need a rebuild anyway might as well do all the bells and whistle to them.



JUST A CRUISER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[JAMCAR223]

If you're scared, just say you're scared... it's OK, we are all here for you.

 

[spidereyes455]

[QUOTE="TURNA, post: 721094, member: 4297 JUST A CRUISER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[/QUOTE]

Righhhht.............🙄 we all know how that goes. 😆

 

[olds307 and 403]

You can really confuse them and tell them it is a 307. Rebuild them, get the shop to drill out the bolt holes and 2" or 2.07" and 1.625" valves with the bowls opened. Your 2004R better have a billet forward drum or all neutral gears will be in your future.

 

[1bad79]

I don't think I have ever seen a set of those

 

[hoffa65]

On the 69 350 heads the 5 is small and the A is large.
307 heads the 5 is the same size as the A
Pic of 83 307 HO head numbers.

 

[TURNA]

Ok well the pics I posted they are the same size, sooooooo?????

 

[hoffa65]

Ok well the pics I posted they are the same size, sooooooo?????

You dont see the differance between the two??
You best get some glasses brother, LOL




ok maybe the size close but the script is different the number and the letter on your pic.
On my pic the script is the same for both.