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butch
07-11-2011, 08:01 PM
Ok, I'm thinking of taking out my poly 318 in my 65 dodge 4x4 and replacing it with a 360 stock engine. Will it bolt up to my four speed granny trans??

stansgray03
07-11-2011, 08:10 PM
Bell housing might be different but I'm not 100% sure.

bremereric
07-11-2011, 09:06 PM
Ok, I'm thinking of taking out my poly 318 in my 65 dodge 4x4 and replacing it with a 360 stock engine. Will it bolt up to my four speed granny trans??That's a great question and I feel stupid

secret indy
07-12-2011, 07:52 PM
If memory servs me right, the bolt pattern is the same between the "poly" and "LA" blocks but you will need a flywheel for a 360 though. Also make sure your 360 crank is drilled to accept a pilot brg.

rnaz
07-12-2011, 08:04 PM
I'm pretty sure (95%) that the LA and poly blocks have the same bell housing pattern. Shouldn't be a problem.

gnome
07-30-2011, 08:07 AM
stroke the poly!!!
see here:

http://www.1962to1965mopar.ornocar.com/poly318.html

wayfarer
08-08-2011, 06:05 PM
All A series and LA series 1963 and newer have the same bolt pattern. 1962 and older have the EarlyHemi bolt pattern.

As said, you will need an external balanced flywheel.

.

Powerflite
11-27-2012, 12:48 AM
Also, the motor mount locations are wider on the poly motor than the LA motor.

74powerlesswagon
12-02-2012, 11:09 AM
360 flywheels have three approx. 2 inch "holes" bored into the backside of the flywheel. if you find a flywheel with two holes, its a 340 flywheel, keep it, and no holes is a neutral balance 318 flywheel, which can also be used in forged crank big block engines as well. just make sure the flywheel is setup for an 11 inch clutch, not a car 10.5 inch.