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Old 05-29-2019, 10:06 PM   #1
BCOWANWHEELS
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started building my 441 heads. tips 4 ya,ll

today I started building my 441 heads and thought I,d share a couple tips I,ve learned over the years.

1. when going to screw in rocker studs and guide plates.. YOU MUST DRILL OUT THE FACTORY OVAL SHAPED HOLES FOR PUSHRODS TO 7/16. USE A NEW DRILL BIT WITH A DRILL PRESS...............AND USE CUTTING OIL GENEROUSLY........

2. WHEN REMOVING PRESS IN ROCKER ARM STUDS........... HEAT STUD BOSS BEFORE YOU START THE PULLING PROCESS.

MORE TO COME
BOB
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Old 05-30-2019, 05:06 PM   #2
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Re: started building my 441 heads. tips 4 ya,ll

I'm in, let's see your progress. I love a good rebuild with all the juicy details.
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Old 06-09-2019, 01:34 AM   #3
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Re: started building my 441 heads. tips 4 ya,ll

got pushrod holes drilled out to 7/16 also got all rocker arm studs pulled and all valves n hardware removed. now off to machine shop with em.
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Old 07-10-2019, 08:39 PM   #4
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Re: started building my 441 heads. tips 4 ya,ll

well finally got to work on my 441 heads, I found out I have the desired Canadian heads. yee haw............all the nhra super stockers want this head because it flows 10-15 % more than the U.S. 441 HEAD. on with the grinding
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Old 07-10-2019, 10:40 PM   #5
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Re: started building my 441 heads. tips 4 ya,ll

Did not know about those differences. I have a set of 441 heads on my vehicle and would love to see some casting marks that show the id marks.

I can say this, they aint super fast but they have been very durable.
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Old 07-11-2019, 01:15 AM   #6
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Re: started building my 441 heads. tips 4 ya,ll

Comming
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Old 07-11-2019, 06:49 AM   #7
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Re: started building my 441 heads. tips 4 ya,ll

x2 would like to see the casting marks
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Old 07-11-2019, 09:12 AM   #8
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Re: started building my 441 heads. tips 4 ya,ll

in on this
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Old 07-11-2019, 09:32 AM   #9
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Re: started building my 441 heads. tips 4 ya,ll

There were two designs of Fuel Injection heads- the ones with 1.94" intake and 1.50" exhaust valves, and the ones with 2.02" intake and 1.60" exhaust valves. On the 2.02/1.60 heads, the valves were extremely close together. These tended to crack in the area between the valves.

I'm guessing you have the 2.02/1.60 heads, Bob?
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Old 07-11-2019, 12:13 PM   #10
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Re: started building my 441 heads. tips 4 ya,ll

1st thing 441,s arent fuelie heads.............. yes I,am going to large valves. Canada heads have 441 cast into them on bottom side length wise on int. port, us heads have 441 cast in width wise. there heavy castings. people say go modern alum heads but what they overlook is all the cheap import heads need work b4 install so true cost is a lot higher. nothing is better imo than gm for our use. lastly when folk say closed chamber is better by the time you open chamber up so int valve can breath its not 64cc chamber anymore. go 76cc and use .125 dome pistons to get 10-1, fine tune with deck height and gasket thickness. IMO I,AM NOT BUILDING A RACE ENG. JUST A REAL 355 / 350HP ENG.
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Old 07-11-2019, 03:41 PM   #11
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Re: started building my 441 heads. tips 4 ya,ll

Oh, OK.
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Old 07-11-2019, 05:28 PM   #12
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Re: started building my 441 heads. tips 4 ya,ll

I have some real nice fuelie heads 4 sale off 327 / 300 hp engines
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Old 07-13-2019, 12:02 PM   #13
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Re: started building my 441 heads. tips 4 ya,ll

I,ll have some pic,s tonight 4 yall
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Old 07-13-2019, 03:27 PM   #14
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Re: started building my 441 heads. tips 4 ya,ll

Pic,s. Of 441 heads made in u.s.a. Note how the 441 is cast into the head cross wise on int. Port bottom. THIS HEAD HAPPENS TO ALSO BE A " X " CASTING WHICH I NEED 1 TO MAKE A SET IF ANYBODY HAS 1 FOR SALE REASONABLE, CORE IS FINE IN FACT PREFERED..
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