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#444087 - Thu Aug 21 2008 05:08 PM 250 with integral manifold  
jfnar  Offline
Shop Shark
Joined: Aug 2006
Posts: 494
Arkansas
I've done a search and found conflicting info. Hopefully someone can clear this up. I have a 250 with the integral manifold. Can I change the head with an older one that has separate intake manifold? Some posts say yes and some say it can't be done. Has anyone done this? Thanks.


'64 swb stepside (gone)
'57 1 ton
'53 phone truck
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'68 swb gmc


#444095 - Thu Aug 21 2008 05:36 PM Re: 250 with integral manifold [Re: jfnar]  
Lonnie Gallaher  Offline
Shop Shark
Joined: Feb 2000
Posts: 838
San Bernardino, Ca, USA
Reliable sources state that the earlier head will interchange.


#444108 - Thu Aug 21 2008 05:59 PM Re: 250 with integral manifold [Re: Lonnie Gallaher]  
Hotrod Lincoln  Offline
Extreme Gabster
Joined: Feb 2004
Posts: 14,636
Dellrose, TN
Yes, and it's done all the time. The integral-manifold head is only good as an anchor for a small to medium-sized boat, or maybe a big doorstop.
Jerry


Who says I live in a rough neighborhood- - - - -?
Just because I'm a tail gunner on a beer truck, maybe?

"He ain't even got a noddin' acquaintance with the truth- - -let alone a speakin' one!"


#444586 - Fri Aug 22 2008 03:43 PM Re: 250 with integral manifold [Re: ]  
Joe H  Offline
Shop Shark
Joined: Feb 2000
Posts: 4,024
Lee's Summit Mo. 64086
The exhaust on the integral head has two outlets doesn't it? That will be the only difference.

The early heads are all the same so look for any 230,250,292. The real early 194's have a smaller combustion chamber and will bump the compression up to approx. 9 to 1. They are hard to come by but worth a look if you are in a older yard. The 292's use bigger exhaust manifold outlets, 2.5" instead of 2.25", and can be identified by the three bolt outlet. The smaller outlet only uses two bolts.
There is no difference in the main head, so really the first one that looks good should be fine.

You can always have bigger valves put in when getting a valve job, small block Chevy valves go right in and are pretty cheap to buy.

Joe



Moderated by  53moneypit, Woogeroo 

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