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Sounds like you own a really rare and cool car.

The "N" code and E63 on the fender tag only tell you the car came with a 383-4bbl; it does not tell you which version, 330 horse or 335 horse, the car actually recieved. Many sources incorrectly list the 68 and 69 H code and the 70 N code as the HP version of the 383.

You need the broadcast sheet to know which engine assembly was installed.

"L" is the code for the 2bbl 383. I don't think I've seen a source that lists the "L" code for a 383-4bbl 330 horse car.

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Thanks for the great comments, it seems my manners were left at the door.

Do you also consider official 1970 Plymouth service manuals and official Mopar 1970-71 parts catalogs to be among the sources you 'know' that have incorrectly stated that N is a wrong code letter for 1970 HP 383 335hp?

If not an N, then what letter do you say your prayers to every night? If you were president of Chrysler in 1970...what code would you give the HP motors to differentiate to assembly workers that a 4 door Fury should never get a 'Cuda or R/T's V8? Its tantamount to saying that a 1970 R/T Chally got a 350hp 440 station wagon motor. Lol!!

'Cuda and Challenger were performance models, not 4 door grocery getters. They may have only gotten Hi Po motors installed, no two barrels, the Magnum and Super Commando engines and one hot 340. I like that, never say never, who am I to say. Don't you guys have the same Mopar factory books I do, why do you see it differently?

If one letter, N in this case, was designated for a HP engine, then all others naturally fall under a different letter, in this case, Mopar would give the 2bbl and non-performance 330hp 4bbl's the letter L. Non-performance 383 = L in VIN's 5th place. Just like a 440/440HP/440sxpk (T, U, V)

Also, I've never seen one source that lists a non-performance 330hp 383 as an N code!! Mopar sources state N is 383HiPerformance in 1970...only. Read...only. N = HiPerformance -nothing else, no other motors included. Why so hard to understand?

The sales code was E63, N codes installed into E Body - L code 330hp 4bbl into C body, B body 4 door, etc. Same with 440, non-performance engines installed into grocery getter, 375hp HiPo for all 'Cuda's and R/T's, GTX, etc. That is simple enough, keeps the non-optional Magnum engines from ending up in a 4 door Satellite.

Why would the N represent 383 4bbl's as a whole. The E63 was given to do just that - they didn't need to offer two distinctions, N and E63, did they?!?! Think about it before replying guys.

There were E61 L code 383 2bbl's, and E63 L code 383 4bbl non-HP 330 hp motors (most destined for 4 doors and the like.) Who agrees? Nobody here agrees?!?!

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Also since the car was a N95 California car it originally had the turn down exhaust which I changed

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Wow...you guys are the best, I knew I came to the right place for answers. I'll leave my opinions of GG at the door with my cockey attitude from now on.

I am totally seeing the bigger picture here. I too scanned my 70-71 Mopar parts catalog and found these same anomolies. I think I can agree that all 383's in 1970 were HiPo 335 hp. They all had the same 9.7 to 1 pistons had the same part # 440HP cam/lifters, same color coded valve springs, same oil pan w/ factory windage tray, etc.(BTW - I quoted my Road Test maazine June 1970 article when posting 10.5 to 1 compression earlier - should have checked my FSM first, oh no, one member is right that the factory literature is not always 100% correct)

Painting the engine blue or orange, what's the significance? Does A/C dictate or does Holley carb or does Tranny or a combo of above? Interesting topic. My engine is blue, has A/C, has Carter 4732S, has 727 auto, for the record, dual exhaust without cutouts and tips.

I'd like to hear back from the few members that stated I do not have an HP motor in their educated opinions...

I will say a motor should have been stamped with HP or HP2 on its pad, maybe not all were stamped, mine surely isn't.

I'm not exactly sure if L code is 2bbl only, neither is Dan, so you guys can argue, I'm done...to have that cold-one a member suggested earlier. (applause from crowd)

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I have a JH Challenger Convertible with N code, I will pull the build sheet tonight and post those codes. I am curious, hopefully someone can tell us what they mean. I also have the original carb 4218 Holley with N95 on the car. I went through the same thing before starting the resto, and decided to keep it original instead of another R/T clone.

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Rarity+high demand=Desirability

Just because a car (or other item) is 'rare' does not mean it is necessarily desirable. Many people confuse the two. A BS cuda will, all things being equal, be more desirable than a BH car. In fact, a rough cuda will always sell for more than a cleaner barracuda.

I have a 70 challenger (N code) that is a rallye hood away from being an R/T. But at the end of the day, the RT will always be more valuable/desirable than my car. If it really bothered me, I'd sell my car and buy an R/T.

Interestingly, a super bee is generally more desirable than a Coronet R/T, even though you get a bigger engine in the R/T! This is true to a lesser degree with road runners and GTXs as well.

My suggestion is to ignore the numbers and have fun with your car. It sounds like a winner to me!

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Right on Danan! Well said. Couldn't agree more, yet the obvious (to me anyway) is not so obvious to others. Oh well.

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Also since the car was a N95 California car it originally had the turn down exhaust which I changed

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It has nothing to do with California emissions. No JH car with the exception of the A66 ever came with rear exit bright tips.

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... as long as we are talkin' 1970!

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Also since the car was a N95 California car it originally had the turn down exhaust which I changed

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It has nothing to do with California emissions. No JH car with the exception of the A66 ever came with rear exit bright tips.

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Also since the car was a N95 California car it originally had the turn down exhaust which I changed

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It has nothing to do with California emissions. No JH car with the exception of the A66 ever came with rear exit bright tips.

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