Totally Confused

[Holy Roller]

I recently bought a 383 that came out of a 66 charger, I was told it is a 383 magnum. How can I tell if it is truly a 383 magnum? And what makes it a magnum engine. ?

 

[Seax440Dodge]

cam, springs, windage tray and some carb differences

 

[69Bee]

The flat pad under the distributor should have "HP" stamped into it also.

 

[Jeremiah]

If it was original to the '66 dodge it was not a "magnum" but the standard 325hp 4-barrel engine. A 1966 383-4 would use log manifolds as well. The HP manifolds came with the 383 Magnum in 68.

 

[Holy Roller]

If it was original to the '66 dodge it was not a "magnum" but the standard 325hp 4-barrel engine. A 1966 383-4 would use log manifolds as well. The HP manifolds came with the 383 Magnum in 68.

What do you mean by "log" manifolds, the block is stamped with a 65/66 date 11/29/66 I think. And it also has a Maltese cross, the person I bought it from had the tranny that went with the engine. But I don't know why he said it was a magnum.

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cam, springs, windage tray and some carb differences

By windage tray, you mean under the intake or in the oil pan? The engine was disassembled when I bought it, so I don't know if it had one or not. And what's the difference in the cam and springs? This is the first mopar I have ever built, my Dad had a new 68 Roadrunner with a 383 when I was younger so I thought I would try it myself. Any help would be greatly appreiteated.

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I will take a look, Thank You

 

[69Coronetrt]

I recently bought a 383 that came out of a 66 charger, I was told it is a 383 magnum. How can I tell if it is truly a 383 magnum? And what makes it a magnum engine. ?

As stated above, if it is out of a 66 it is not a Magnum.

 

[1966satellite]

Windage tray is between block and oil pan. Maltese cross indicates .001" undersize crank.

 

[Cranky]

'log' exhaust manifolds are the stock looking ones that look like a log running beside the engine with short ports bolted to the heads. The Magnum exhaust manifolds are more contoured for better flow.

 

[flypaper]

If it was original to the '66 dodge it was not a "magnum" but the standard 325hp 4-barrel engine. .

no stock 383 ever made that kind of hp in 66...

get the stamped numbers off the pad by the distributor
to figure out what you have..

 

[69Coronetrt]

no stock 383 ever made that kind of hp in 66...

...

 

[Photon440]

The left picture shows the magnum manifolds, the standard 325 hp log style is on the right. 325 4 bbl was premium fuel for 1966, sort of a low point as earlier and later versions had more power - you could get a dual quad 343 hp. version in 1962, and the road runner and magnum version from '68-70 was 335 hp.

 

[flypaper]

...

i stand corrected.

the 66 4 bbl 383 i had was a total slug..

 

[Holy Roller]

Thank you for the help, it really helped a lot, as I move forward with this build...I more than likely will have more questions. Such as what is a good detailed book to show assemblies of cam and timing components, basically the whole engine. This is my first Mopar and I want to get it right. Thank you

 

[HT413]

That help dont come for free!! We need some engine ****

 

[ma mopar nutz]

Thank you for the help, it really helped a lot, as I move forward with this build...I more than likely will have more questions. Such as what is a good detailed book to show assemblies of cam and timing components, basically the whole engine. This is my first Mopar and I want to get it right. Thank you

Find a factory service manual for your year and car every possible question you might have can be answered their !!:headbang: