Author Topic: Will these heads work on my 383?  (Read 3477 times)

Offline arcticmopar

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Re: Will these heads work on my 383?
« Reply #15 on: May 09, 2008 - 11:17:27 PM »
Thanks, bb71challenger!  :thumbsup:

But curious, why would a 383 be better than a 400?  Isn't a 400 a bored out 383, which is good?  :clueless:


I belive when comparing original pistons, all 400's had low comp.(8.0-8.5?) and most 383's had approx. 9.5? ??? Even though they were cast with a bigger bore, the 383's will usually respond better to HP mods. Now rebuild both with the same hi comp. piston and well,cubes are cubes! :naughty:
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Offline bb71challenger

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Re: Will these heads work on my 383?
« Reply #16 on: May 10, 2008 - 01:12:00 AM »
I belive when comparing original pistons, all 400's had low comp.(8.0-8.5?) and most 383's had approx. 9.5? ??? Even though they were cast with a bigger bore, the 383's will usually respond better to HP mods. Now rebuild both with the same hi comp. piston and well,cubes are cubes! :naughty:

yeah that is a big factor along with the fact that every 383 I have ever seen had a forged steel crank in it. But you are right, built to the same specs, cubes are cubes.
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Offline Chryco Psycho

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Re: Will these heads work on my 383?
« Reply #17 on: May 10, 2008 - 02:56:38 AM »
400 block with a 440 steel crank & rods & some compression & look out

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Offline Moparal

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Re: Will these heads work on my 383?
« Reply #18 on: May 10, 2008 - 07:27:37 AM »
400 block with a 440 steel crank & rods & some compression & look out

 :iagree:  turns a 400 into a monster. Just giving it good compression and a cam will to.

Offline hemiken

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Re: Will these heads work on my 383?
« Reply #19 on: May 10, 2008 - 07:29:19 AM »
400 block with a 440 steel crank & rods & some compression & look out

:iagree:  turns a 400 into a monster. Just giving it good compression and a cam will to.


400 Block + 440 Crank = 451 ci
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Offline Changin Gears

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Re: Will these heads work on my 383?
« Reply #20 on: May 10, 2008 - 07:53:55 AM »
The low deck 451 is pretty nice.  Headers fit better and its alot easier to change plugs.


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Offline Super Blue 72

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Re: Will these heads work on my 383?
« Reply #21 on: May 10, 2008 - 01:36:45 PM »
Cool!  Thanks for the responses! :thumbsup:

Just collecting parts right now and playing around with the 383.  We'll see what happens in the future. 

I'll keep my out for other fun stuff....a 400ci block eh?  :sly:  Hmmm....
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