I am mocking-up my 426 Hemi without the rods and pistons but put the crank in with the old bearings and tightened the caps down. The crank turns freely but when I put the dampner on it hits the new Milodan oil pan where it bolts to the timing cover. The pulley's don't line up either, but I don't know if I have the correct ones yet. Anyone run into this issue?

is the lower timing gear on the crank ?

No. There is no cam in it so I did not install the timing gears. So the are you saying the dampner will rest against the timing gear?

Yes, that was what he was saying. You need the gear on. The damper butts up against the crank gear.

Hello Jimmy. Is the timing cover on?

Yes the timing cover is on and so is the water pump housing. I never thought about what stops the dampner from bottoming out on the crank, now I know! Guess I got to get the dampner puller out, take off the water pump housing and timing cover, and put the gear on...

What is the diameter and height of the correct single groove crank pulley for a super stock Hemi?

Some of these questions are scary !!!

Hey, Hey , stop pulling our legs. Someone with over 31,000 post doesn't know that the timing gear has to go on ? come on. And why is the timing cover and water pump on? painting ?

You need the gear and the oil slinger on

Oil slinger is optional.

I am mocking up the engine to install it in the chassis to make sure everything fits before I disassemble it for the machine work. I have other reasons to do it this way too, just can't talk about it yet. I have never even thought about assembling an engine with no reciprocating assembly in it before, therefore it never dawned on me that I needed to put the crank timing gear on.

Does the number of moparts posts make or break a person as a great mechanic.

Exactly. I am not a mechanic and never have been, I am a Mechanical Designer and Mechanical Technician and only play with grease and dirt after hours...

Jimmy You're doing fine. when the time comes I may have a pulley for you

Are you trying to use a street hemi balancer or a race Hemi or a aftermarket balancer? The pulley are not the same for each application

I have the thick balancer.

Anudder pic...

The stock 68/69-71 Hemi crank pulley is shorter than a stock B/RB pulley by about .75".

Put your water pump pulley on and pull the dampner out till the V belt grooves line up ,,, this is just mock up , no need to tear it all down to put the crank gear/oil slinger in place

Jim there are 2 hemi lower pulleys, it all depends on what water pump pulley you use. Up until ... I think .... sometime in 68 the Hemi used the standard B/RB waterpump pulley and had a very shallow crank pulley ... again "I think" ... that pulley is what the Milodon alum crank pulley is based off ? Then sometime in 68 Chrysler changed to the shallower Hemi only water pump pulley and the crank pulley was made a little deeper.

OK, wasn't sure what I had. I bought the water pump pulley that Megaparts sells for 66-68 I believe. It is shorter and doesn't come close to the water pump bolts, so when I pull the dampner back where is should be they will probably line-up.

Some help sorting it out

http://www.bouchillonperformance.com/resources-pulley-checklist

I didn't see one listed for 66-68 , only 68-71 ???

This is the one I bought from Megaparts:

http://www.megapartsusa.com/proddetail.asp?prod=107-EP253

That is the 69-71 , stared being used sometime in 68 I believe , you need the deeper of the 2 hemi crank pullies.

If you have the right lower pulley the grooves between the 2 pulleys should not be more than a groove width apart with your dampner on as far as it was in that picture.

After doing more reading it seems that any single groove big block pulley is the same for the 66-68 Hemi also. I have plenty of those laying around and will give it a shot.

Link please because that can't be right , the hub is also thicker on an ORIGINAL Hemi balancer. , if one runs a thin balancer on the Hemi then stock B/RB wedge pullys can be used , this not the case with the Hemi.

Not so None of the stock 383/440 water pump pulley, NONE of them are the same as the 1966 to 1971 street Hemi water pump pulleys Many people, me included, have tried to use a stock 383 single groove water pump pulley with a 440 dampener and a 383/440 bottom single groove pulleys, they are absoulutely not comapatable on a 426 street Hemi motor

Web Site Techs, Why is this post making my computer show 4 different links to this web site, on this post only
Please fix it!

OK, I read the Bouchillon site above and that is what is said, unless I am reading it wrong!?! It is pretty hard to read, so it just might be me again...

Cab , unless the snout of the hemi crank is different in length how is that not possible considering the hemi uses the same timing cover and waterpump housing ?

Interesting learning going on here. I will stay tuned for my future project and learn as well.

So I put the puller on the dampner and moved it back to where the alternator lines up with the crank pulley and the aftermarket Hemi water pump pulley is not even close. It looks like the pulley I need would just about hit the water pump bolts like on a 383/440. I do have another supposed Hemi crank pulley that is smaller in diameter and shorter than the one I have on the car which I was told was the right pulley. So, what is the diameter and height of the correct Super Stock Hemi crank pulley and water pump pulley? I will ask over at Class Racer and see what they say.

On my Hemi the water pump pulley is so far back it covers the water pump bolts...i.e. they fit inside it.

What I remember on the 426 street Hemi pulleys is that the 1966 to 1968, maybe even some early 1969 cars had the first version which Mopar changed in 1969 to 1971 cars to the later pulleys I can't remember what the exact differences where now The 1964/1965 Race Hemi used a thin balancer like the 361/426W motors used with the straight timing tab timing covers. I think the later(1969/1971 Street Hemi) ones had a smaller diameter crank pulley As far as my statement on the water pump pulley I'm probally wrong on that now that I think about some of the standard steering (1962 to 1971) B/RB motors I have that there water pump pulleys might have work one or the other street Hemi motors

That is what I have been seeing, but I have not found a real good picture of the area, I need to do some more searching. I did find this pic of Max Hurley's Hemi Dart.

I have March alum pulleys and the water pump uses these pan head bolts for clearance. Since my pulleys are thicker than steel ones, they may need more space. But the point is the pulley is as far back as it can get.

Thanks, that is what I have seeing also.

Agreed on using pan head bolts (there are many varieties). they've saved my a$$ in a few situations

If your going to use a non stock bolt without the built in thread sealer inserts on the water pumps make sure and use a thread sealer on the bolts to prevent coolant loss around the threads

Good reminder, AF leaks are the cats ass

That looks like a B/RB non A/C waterpump pulley , the matching crank pulley for that on a stock hemi balancer would be very shallow.