Re: poly 318 with LA heads.
[Re: jeebis44]
#1652275
07/29/14 06:22 AM
07/29/14 06:22 AM
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Joined: Sep 2003
Posts: 1,295 Hawley, Texas
shinnery
super street
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super street
Joined: Sep 2003
Posts: 1,295
Hawley, Texas
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I think if you lay a LA head gasket on the poly block you will find no way to put intake pushrods in it. Bryce
Every electronic device is manufactured with smoke stored deep inside...
only a true genius can find a way to set it free.
The most terrifying words in the English language are: "I'm from the government and I am here to help!"
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Re: poly 318 with LA heads.
[Re: shinnery]
#1652276
07/29/14 10:14 AM
07/29/14 10:14 AM
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Joined: Jan 2003
Posts: 21,122 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,122
Niles , Ohio
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I agree they are different.Rocky
Chrysler Firepower
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Re: poly 318 with LA heads.
[Re: Twostick]
#1652279
07/29/14 02:06 PM
07/29/14 02:06 PM
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Joined: Jan 2005
Posts: 12,478 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,478
Kalispell Mt.
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LAs go on a poly easy enough, it is the other way around you don't want ot get involved in They have the same deck height, rods, crank, pistons, timing cover, timing set, lifter angle, oil pump... just the poly block has clearance for the intake PR to go at a weird angle and the LA does not, if you try to notch you LA block for poly PR angles you will hit water.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: poly 318 with LA heads.
[Re: Twostick]
#1652280
07/29/14 09:26 PM
07/29/14 09:26 PM
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Joined: Jan 2004
Posts: 8,637 fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,637
fredericksburg,va
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Quote:
I was always told the reason push rod angles suck on an LA is because they never changed the lifter angle from a poly.
Kevin
Correct, Chrysler was saving a dime from retooling. The pushrod angle was designed for the polyhead and they needed a smaller v8 package for the new a-bodys so a smaller head was designed for the block they had. The block had proven to be very good, all about money. I think the poly head would have been a better perfprmance head in the long run(canted valves).
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Re: poly 318 with LA heads.
[Re: kams]
#1652283
07/29/14 11:12 PM
07/29/14 11:12 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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Are you sure that the Poly 318 3.91 bore can go .130 to a 4.04 bore...?
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: poly 318 with LA heads.
[Re: dogdays]
#1652285
07/30/14 02:48 PM
07/30/14 02:48 PM
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Joined: Jan 2005
Posts: 12,478 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,478
Kalispell Mt.
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They were way thicker in general but core shift was worse so the odds are better but still not good, especially considering 60 years of corrosion from not being serviced properly... BTW I have a 71 318 block in the shop right now that is 4.070 bored and was a running motor with 12.5 compression, no block filler and was being dirt track raced till it developed a rod knock... I am scared to reassemble it
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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