401 HEADS - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 03-12-2001, 04:58 PM
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401 HEADS

401 HEADS ON A 304,HAS ANYBODY DONE THIS? I AM CHECKING FOR A FRIEND OF MINE THAT IS TRYING TO GET HIS CJ RUNNING. DOES 401 HEADS HAVE L-SHAPED PORTS?
THE MOTOR USED TO RUN ALONG TIME AGO,BUT HAS NOT BEEN STARTED IN 7 YEARS. I KNOW IT IS PROBABLY A WASTE OF GOOD HEADS, BUT THAT IS WHAT IS ON IT RIGHT NOW. TIA

IF I BUY ANYMORE TOYS,I'M A DEAD MAN!!!!!!!!!
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post #2 of (permalink) Old 03-12-2001, 06:06 PM
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Re: 401 HEADS

i have 401 heads on my 304. my 304 was also bored .040 over and balanced. it has turned over 6000 rpm with no problems. the ports are indeed "L" shaped.. this gives the engine that sweet AMC rumble. 304 heads also have "L" shaped heads though.. the 401 and larger 360 heads are the same(360's had 2 types of heads)

~~Elusive~~
[img]/wwwthreads_images/icons/tongue.gif[/img]tj-7..tellico tested, uwharrie [img]/wwwthreads_images/icons/tongue.gif[/img]safaried..1 ton drivetrain[img]/wwwthreads_images/icons/tongue.gif[/img]..see it at http://www.jeepgod.net
oh yeah, and a 2000 tj,lift,33's..etc
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post #3 of (permalink) Old 03-13-2001, 09:27 AM
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Re: 401 HEADS

THANKS FOR THE INFO. THIS ENGINE HAS HAD THE SAME THING DONE TO IT. IT HAS BEEN ALONG TIME SINCE I HEARD IT RUN BUT FROM WHAT I REMEMBER IT WAS RATHER THUMPY ALSO. ALL IT TOOK WAS ONE DAY OF BEING AROUND ALL OF US PLAYING IN OUR JEEPS AND THAT NIGHT HE HAD THE MOTOR PULLED AND ORDERING PARTS. ADD ANOTHER JEEPER TO OUR CLAN! WOOOOO HOOOOO!!!!!!!!!!!!!!!!!

IF I BUY ANYMORE TOYS,I'M A DEAD MAN!!!!!!!!!
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post #4 of (permalink) Old 03-13-2001, 10:37 AM
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Re: 401 HEADS

eh eh BOOTS1 I CANT HEAR YA eh eh.


Sorry, but I couldn't resist.

So Elusive, how exactly (ok roughly) would putting 401 heads on a 304 help? gas milage, horespower or torque.

I would like to beef up mine, but I really don't want to sacrifice everyday drivability.

Any ways thanks in advance.

John
Damn the Mud!! Full speed ahead!!!
http://www.Marylandmudbugs.com

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