"LA" engine?

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1963

More articles

Chrysler to introduce a new shorter-deck engine block to the 'A-Series'.

The 'Low-A' engine will be listed as the 'LA' series engine.
 
Don't mean to ruffle feathers.


Similarities Between Poly "A" engines and LA engines

Poly "A" blocks can be used with newer LA and Magnum heads.
Transmission bellhousing bolt pattern is the same.
Crankshafts interchange with 273/318 and internally balanced 340 LA engines.
Oil pump and distributor drive shafts are the same.
Oil pans from 273/318/340 LA engines will fit
Dampers from 273/318 and internally balanced 340 LA engines will fit.
Distributors from all LA engines will fit.
Poly timing chain and sprockets are the same as LA engines.
Poly block deck height, bore spacing and 59 degree lifter angle are the same as LA blocks.
 
69 Cuda 440 said:
April 1963

Popular Mechanics

Chrysler is introducing a new thin-wall casting engine block for the
upcoming Model Year. The engine will be designated the 'LA' engine.

This engine block is lighter than the current 'A' Block, which was introduced in 1956 by Chrysler, and called the 'Hy-Fire 277'.

The new designed thin-wall casting engine block will be 50 lbs. lighter than the
current 'A' engine block.
Click to expand...

I gotta ask.
Do you have a room filled with 8 feet tall bookshelves of archived hot-rodding encyclopedias and magazines? Lol!
 
All true and I'll tell you something else. The 4" stroke small block crank will fit right in the Poly motor. IMO, their heads are superior to LA heads when ported and fixed up. They can be made into real torque monsters.

Also, the blocks are almost indistinguishable from the LA small block at a glance. They are basically the same identical size.


toolmanmike said:
Don't mean to ruffle feathers.


Similarities Between Poly "A" engines and LA engines

Poly "A" blocks can be used with newer LA and Magnum heads.
Transmission bellhousing bolt pattern is the same.
Crankshafts interchange with 273/318 and internally balanced 340 LA engines.
Oil pump and distributor drive shafts are the same.
Oil pans from 273/318/340 LA engines will fit
Dampers from 273/318 and internally balanced 340 LA engines will fit.
Distributors from all LA engines will fit.
Poly timing chain and sprockets are the same as LA engines.
Poly block deck height, bore spacing and 59 degree lifter angle are the same as LA blocks.
Click to expand...
 
69 Cuda 440 said:
1963

More 1963 articles from Popular Science

Chrysler to introduce a new shorter-deck engine block to the 'A-Series'.

The 'Low-A' engine will be listed as the 'LA' series engine.
Click to expand...

This is what 'Popular Science' wrote in their June 1963 upcoming
Chrysler new engine design.

I should have posted, that this was an incorrect statement from the Magazine, so the lesser knowing would know that this was a 'tongue-in-cheek' post.
 
69 Cuda 440 said:
This is what 'Popular Science' wrote in their June 1963 upcoming
Chrysler new engine design.

I should have posted, that this was an incorrect statement from the Magazine, so the lesser knowing would know that this was a 'tongue-in-cheek' post.
Click to expand...

You're a kill! You have forgotten more about Mopars than I will ever remember. LOL
 
T-M-R

My colloquial talents were intended for the 'higher' knowledge Mopar heads.

Bottom-feeders and Georgia-based members do not get the 'joke'.
 
69 Cuda 440 said:
This is what 'Popular Science' wrote in their June 1963 upcoming
Chrysler new engine design.

I should have posted, that this was an incorrect statement from the Magazine, so the lesser knowing would know that this was a 'tongue-in-cheek' post.
Click to expand...

Oh excuse us lesser knowing, almighty one. We know not what you know. It is an impossible mountain to climb.
 
I think I am in that group too. My feelings are hurt. LOL tmm
 
toolmanmike said:
Don't mean to ruffle feathers.


Similarities Between Poly "A" engines and LA engines

Poly "A" blocks can be used with newer LA and Magnum heads.
Transmission bellhousing bolt pattern is the same.
Crankshafts interchange with 273/318 and internally balanced 340 LA engines.
Oil pump and distributor drive shafts are the same.
Oil pans from 273/318/340 LA engines will fit
Dampers from 273/318 and internally balanced 340 LA engines will fit.
Distributors from all LA engines will fit.
Poly timing chain and sprockets are the same as LA engines.
Poly block deck height, bore spacing and 59 degree lifter angle are the same as LA blocks.
Click to expand...

There is one incorrect statement in this post and I dare you or anyone to show me otherwise.

Go on and show me that a poly head can be used on a Magnum block. NOT happening!
 
A Magnum head should work on a Poly block as stated in the comparison. tmm
 
Rumblefish

I believe the 'above' post states that newer 'LA' Cylinder Heads and Magnum Cylinder Heads can be utilized on 'Poly' blocks.

You are correct on the Poly Heads, they will not work on
a Magnum Block.
 
The LA should have been for people going to say that's a Little Ass 273 when getting away from the Poly.
 
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