Got a Hemi today...What the Hell is it?

Kick *** man!! Nice score!

 

Why would he change now????

 

arent shaft rockers only adjustable by manipulating the pushrod??

 

If you have adjustable rockers then are adjusted with a screw embedded in the rocker tip and were used with solid lifters. If they are non-adjustable rockers, fixed length pushrods with hydraulic lifters were used. Solid lifter/Adjustable rocker combinations were found mostly in Industrial applications but could also be found on the Chrysler 300 motors, which were a factory performance motor. I don't believe adjustable rockers were available from the factory, but are available now...

Adjustable pushrods with standard (non-adjustable) rockers...



Adjustable rockers... (these are odd balls, but you get the idea)

 

Rad!!!!!

 

We want current photos!!!!!!!!!

 

Got the pan off last night, pretty ugly in there.


These three little guys used to live in there; probably more still under all the cotton(?) and turds.

Does this make my Hemi a "Rat" motor? Will any car it goes in be a "Rat Rod"?

 

Your motor is haunted!! RAD!!

 

Nice score.

Revhead, the IND56A is a 354.

 

I put together a little engine stand today.

I wonder if these combustion chambers are too pitted?


You never realize how much bigger a Hemi is compared to a small Chevy until you have on in your garage.

 

It appears to me that live rodents are still coming out of it!!

 

Run Chi Chi! Daddy's been drinking again!

 

Good score. All that stuff that is in there most likely saved that motor from rusting inside. as all that **** absorbed the moisture.

I would rather have that in there than nothing in a motor that been parked that long.

May get it freede up easy.

What do the cylinder bores look like.

 

The bores on the left side, in which the head had been removed, are pretty good. The other side, with the head still on, were packed with dirt, the pistons are corroded, and the bores not so good. It'll need boring out.

 

Your dog's name is Chevy?

And those heads are definitely going to need a visit from the flycutter.

 

I have some that look like that also. Is it just the one or do you have one pitted combustion chamber on each head?

I've heard of people running worse. I'll have to read through this again to see which heads these ended up being (cast number?) but, it may or may not be worth the time to clean them up. Was talking about this sort of thing over the weekend with another Hemi guy and he had mentioned carbon build up often helping with pitting. Of course pits are not the best thing in the world (they increase hot spots and stress risers in those areas), but unless you're running a real crazy spec motor, you'll probably be fine. See if you can get a depth on those pits. Might be as simple as a little clean up work. I would be more concerned with the sealing edge than anything. That pitting looks to be mighty close to the edge and somewhat in it.

Welcome to the Hemi dilemmas... one thing always leads to another!

 

Casting # on heads is 1486833-1, which I read are the good heads. I believe the engine was rebuilt at some time and p***. car heads replaeced the ind. heads. The other chambers look better than that one.

 

They're the best of the pre 55s. What size are the valves? 1.81 & 1.5 or 1.94 & 1.75? 73RR has a way of cleaning up the chambers.

 

Just how BIG is an old HEMI???

Well, that's a FULL GROWN GERMAN SHEPHERD standing on the valley cover!

 

I wish I'd measured them before bolting the heads back on.

 

Oh, The refrences say they have the big ports, but the same small valves as the 2 bl engines(***uming this has the oval ex ports, ie 4 bl factory engine). Some say the 4 bl engine has the bigger valves that were on the '55 heads. Was hoping to confirm.

 

No difference in valve sizes between 2 and 4 bbls. In fact I think '54 (?) was the first year Chrysler offered a 4 bbl on a hemi... maybe '55. the '51 to '53 engines used the smaller ports which, even though they are small, still flow better than most any stock engine made in the time period.

 

Yup, '54 was 1st 4 bl. A few keep saying they had the bigger valves. There were supposed to be both 2 & 4 bl engines in '54.

 

From valvecover outside edge to edge they are roughly 32 inches wide, BIG.

 

What a picture! No, NOT of the motors. Such a cute little dog! What's his NAME? Does he bite?

No, seriously, THAT is cool to see a 354 OUT of the car right beside an SBC. Without fenders & stuff in the way, you get the AWESOME REALITY of it!

I know what Hemis weigh. What's a typical small-block Chevy weigh>

 

350 chevy 528
427 693
331/354 697
392 737
That is with updates like alt, modern P/S pump & starter, Aluminum intake

 

The '55 "triple nickle" heads are the most desireable if you need the most HP... but not a whole lot more than any other Hemi...

Chrysler didn't differentiate between 2 and 4 bbl. engine regarding the heads. Valve sizes only changed between engine model years NOT carb size.

A lot of mixing and matching has occured since these engines were new. None of my industrial engines have industrial heads since most engines had been rebuilt on the rigs they were used on and the factory MOPAR rebuilders had lots of p***enger car heads to use and not many industrial heads.

Regarding the pitting of the combustion chambers... don't worry about it. It may cost some HP or airflow but not enough to ever notice... not even on a dyno. The 354 I have in my F100 had the same problem...

 

neat stuff!!!!!!

 

What Chrysler intended to do in '54, & the jury is out on this, was to put the round ex port 2 bl engines in the New Yorker & the oval ex port 4 bl engines in the New Yorker Deluxe & Imperial. The factory shop manual shows that & @ least 1 refrence book states that. Talking stricktly the '54 model year.

 

I have yet to see a correct 2-bbl intake manifold for a 1954 model with the large ports. As well, I have never seen any reference to a 2-bbl on any 54-58 Chrysler Hemi. Yes, the Windsor (Spitfire) 2-bbl in 55-58 has large ports, and will fit, but the casting number will always id it as a Spitfire.

Pictures anyone?

And I agree with Krooser, the early ports may look small but compared to other engines of similar displacement and vintage, they flow quite well.

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