what is the differnce between a383hp motor and a383 non hp

[almx33]

would like to know are blocks the same and internals are different thanks

 

[fatecaptured]

all the 383's have 2568130 castings on the blocks, the internals are different I presume. I know they came with a 2 bbl non hp and 4bbl hp.

 

[Meep-Meep]

One of the benefits about MoPars is you can't go wrong when picking out an engine to build up. The Chevy folks always look for the 4 bolt main blocks, steel cranks and camel hump heads but the MoPar guys know that ANY 383 or 440 between 1968 and 1970 will have a good block, a steel crank and good heads. The list of good parts spreads over more years but the years I mentioned are 100%, assuming no tampering since new.

I'm running a 78 440 block in my Belvedere and would recommend that to anyone who is looking to build a good street engine.

 

[65 Plymouth Satellite 426]

The 383 is 330 Horses Vs. 383HP Is 335 Horses!

 

[Photon440]

would like to know are blocks the same and internals are different thanks

One difference for a non hp 4bbl 383 (330 hp) was the cam which had less overlap and duration.