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EzeakeoRage 09-08-2008 08:58 PM

head questions
 
i was curious this may seem like a very newbish question but i need to know can i put heads from a 361 on a 440 cause i mean technically isnt the deck height the only major difference ? please help a little insight would be nice.

rr69half6bbl 09-08-2008 10:42 PM

Hey zeek, yes you can put the 361 heads on a 440. they will work, But why would you want too? The 361was used through 67. then they made a better casting head in 68. The pre-68 heads are a closed chamber design. meaning the wuench area od the head is smaller then the post 67 which are open chambered heads. the pre 67`s are also smaller valved then the open heads, thus they dont flow as good. You can put bigger valves and do some port work on the pre67`s but thast alot of money wasted when you can do half the work on post 67`s and get more for your money. the only bonus you really get using the post 67`s if you do the machine work. is that they give you like 1 more point of compression. like a pre 67 head would be 10-1on comp. vs. an open would be 9-1, thats because you have more quench area at the top of the head. and if your planning on running pump gas you dont want anything morethen 10-1. the gas is low grade and you`ll get ignition ping real bad, when you nail it and it knocks and blos black smoke real bad. I have a 10.5-1 440 in my runner and I have to run 7 gal of race gas 114 octane and the rest 94 or it wont run. it rattles really bad. just something to consider.

EzeakeoRage 09-09-2008 05:15 PM

well i was going to put them on my 440 as temporary until i can afford to rebuild the 440 heads cause i have a burnt valve on exhaust side number 8 cyl. Just putting them on to get the car drivable again really. thanks alot for the info thought now i know i can do that ill start cleaning those heads up and put them on .

rr69half6bbl 09-09-2008 10:29 PM

your welcome babe, Glad to be of help.


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