Update: Molnar Engineering 3" Main 4" Stroke Crankshaft and 6.625" 2.20" Rods
 

Gentlemen,

I have an update from that 4" stroke 3" main 2.20" rod journal Pontiac crankshaft poll that I recently conducted. I was doing that research for Mr. Tom Molnar of Molnar Technologies and based off of the poll and feedback, he has decided to move forward and is willing to produce atleast a run of these crankshafts for us.

Though these crankshafts and rods will be manufactured overseas, they will be finish machined and quality controlled here in the USA. The cranks and rods will take around eight or so months from being ordered to being available.

With that said and at this time, Molnar Technologies isn't planning on ordering a bunch of extras. If you are wanting one, Tom Molnar is requesting a $150.00 nonrefundable deposit.

Again, these cranks will be an excellent addition to our hobby. With the 4" stroke crank, the 400 Pontiac blocks will be more potent and our 350 Pontiac engines will benefit greatly as well. Remember Ken "Ace" brewer's 383 Pontiac street engine combo? This will be possible/feasible again.

Crankshaft Cost: $1063.54

Floating Connecting Rods: $712.12

Pressed Connecting Rods: Slightly more if there is enough demand to make a run of them.

If you are committed to ordering the crank, rods or both, please send a e-mail to: [email protected] and indicate what you wish to order (crank, rods or both) as well as a shipping address.

After the order is put into their system you can call them with your card info and they will apply the credit to your order to seal the deal.

Molnar Technologies: (616)-940-4640

Good news. Thanks for your efforts in making this happen!

You were looking for a 2.25 J ?Tom

Yes but Tom Molnar wanted to produce something more versatile. I am grateful that he is willing to produce us a 6.625" length 2.20 rod journal .980 pin connecting rod for us to be able to use "off the shelf" pistons. The rods will also help out those who bought Speedmaster cranks that ended up being 2.20 journal instead of 2.25 journal as advertised.

Thank you for the effort to make this happen. I know the drill well. You just have to keep beating on the vendors, sometimes for years and years. Now we have another source for QUALITY parts we want. great job.

how many cranks constitute a "run"?

Thanks for all your work on this. I am still kicking myself for selling a new Scat 4" crank years ago.
Talking to Tom Molnar is a very educational experience isn't it.

What is the weight of the rods?

Racetec has 30 and 40 over pistons for that rod in 3 diff CRs.Tom

Just FYI for you folks...I was in touch with Molnar today by email. They said: "There were supposed to be several people interested but they seem to have all disappeared." I get the impression if people don't step-up they won't get made.

So - If you are interested get in line...That way together we can all get the product we want.

Good timing, I just received an e-mail from Tom Molnar asking me if I had any movement information.

Here is what I know, I have committed to one crank and two sets of rods, those are the only orders I know about. If you want one, please contact Moolnar Technologies and let them know. Otherwise, this is going to quickly die on the vine...

I'm on the list so that makes at least 2. I think my inquiry is the reason that Mr. Molnar contacted you.

I hope this works out - Molnar's reputation for machining and quality is definitely excellent. I would rather buy from them than Scat.

Today I might agree with that as Mr Molnar is a fine Engineer (who used to do all of the rod engineering for the Oliver connection rods)
until he started his own business.

Hope it works out well for everyone.

Tom V.

I am placing my order.

IMHO everyone should order at least 2. 4" stroke with 3" main is IMHO the best Pontiac crankshaft.

As good as SCAT has been, they got purchased by some financial entity, which may not be a good thing.

And I am informed that MOLNAR is better than SCAT..

Have Butler and other potential retailers been informed of Molnar's 4" stroke, 3" main, 2.20" rod journal crankshaft offering?

If everyone in this thread orders at least 1 or 2, and if Butler ordered say 25, and a few others made orders, this thus should work.

Good question Douglas, I really don't know. At the moment it's more of a grassroots thing but I hope that we can show the interest and demand to make it a catalog item.

Appreciate your efforts Johnny! I emailed them. Mainly just bumping this up. I hope something becomes of your attempt to get this done!

Murf

Any thoughts on making it a a 6.635 rod to account for most of the Pontiac decks being in the hole or pin height adjustment made by piston mfger's

My stock 428 was .018 in the hole.

It's Happening!!

Tom Molnar just wrote and informed me that they have enough orders of the crank to make a run of them so it's going to happen. I have no idea if and how many "extras" will be made so if you want one, please consider ordering it.

WA-HOO....Thank you for helping this along.

Thank you for your effort in talking them into bringing these to market! :beerchug:

I reached out to Molnar and they are willing to do a run of 3.25” main 4.00” stroke cranks as well if anyone is interested. They need a minimum order of 5 to move forward. I’m in for one. They are contacting all the major Pontiac vendors gauge interest.

So I just stumbled on to this thread. I was getting ready to order one of Butler’s 4” rotating assemblies for the RA III in my ‘70 TA, but I’m happy to join this club if it helps us out. I think the Butler assembly requires running a BBC journal.


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I’d consider a 4” crank for my 400 and one for the 428 that’s sitting on a stand in my garage. Plan on using that as an interim replacement while the 400 gets built, but at some point I want that engine to find its way into some street rod/bracket car.


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Racer boy,I think these are BBC Js.Tom

Correct but Tom Molnar is also producing 6.625 length 2.20 journal .980 pin floating rods for those wanting to use off the shelp Pontiac pistons.

Ordered one set. I already forgot the name of the gentleman I talked to but it wasn't Tom. Had a bit of a chat with him. I asked about balancing and he said they could also do that. They just need a piston weight or even the pistons on hand. He mentioned Icon pistons, I asked about AutoTech. He said they were also a very good piston and the compression height can be changed on their shelf pistons for an added fee.

I just looked on their website. I didn’t see the 4.00 stroker crank listed, so I sent them a note and will follow up with them tomorrow. Will also inquire about the rods.


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This is a limited run that he is doing, the crank and rods may or may not make it as a listed production item.

3.25" main, 4" stroke MOLNAR forged crankshaft
 

Excellent! That would serve the 421, 428 and de-stroked 455 market.

Lots of 428 and 455 blocks out there.

Better to also have availability of 3.25" main journal, 4" stroke for 428 and 455 blocks. Best is the 3" main journal, 4" stroke for a 389 or 400. But with the eventual growing scarcity of non 557 400 blocks, the 3.25" main journal 4" stroke in a 421, 428 or 455 is a valuable alternative to instead using a 350 block.

I just put a deposit down on one. They only have a couple remaining, from what I was told.

How much are they and what do they want for a deposit ?

I think the first post had prices. I paid around $1100 with shipping. I put half down but I think you can put down less.

For my 3" main 4" stroke, Molnar did not take a down payment. Just my cc info and will charge me when they are ready to ship.

They initially did the same (no dp) with me but I had called before it was a for sure thing. I called back to make sure I was confirmed and ended up giving a $200 deposit.

~$1100 is same quote I received. I got my name on the list today for the first run.

Just out of curiosity, what rod/piston combo were you guys thinking of running? I’m going to be running my #12 heads, so I will need a dish.


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Hey I'm confused here. I've been talking with molnar and decided I wanted to order one of the 4 inch stroke 2.20 rod journals 3" main journal cranks and corresponding rods. However when I called and spoke with Ed he stated they have 2 different cranks being produced. Both are 3 inch main journals but one is 2.20 rod journal and they are making a 6.8 rod to go with it and stated icon has off the shelf pistons, the other is pontiac rod journals and using factory style 6.625 rods.

So neither are what I have read on here and curious what ones you have chosen and why or if you guys even knew this.

Are you sure this is correct? I don’t think they are having two different runs of the 4.00 stroke crank w/ 3.00” mains. I think they are just doing a run of of the Pontiac-length rods that still use the BBC journal. The idea being, from the conversation I had, was it would open up more options for piston choices. At least that was my understanding. Happy to reach out to them for the exact specs.


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More than sure, Ed told me over the phone and I emailed Tom and he co firmed it. Two different 4" stroke 3.0" main cranks one for bbc 2.20 and the other for pontiac rod journals.

OK, cool. I spoke with Marshall today, but only to confirm that they were doing a run of Pontiac-length rods with the bbc 2.20 journals. I guess it's good that there are multiple options, especially if you already have a set of good rods with the Pontiac big-end.

I ordered one with 2.20 journals and a set of their rods that way there is better bearing choices. I also decided to go with their 6.625 rods vs a 6.8 for more piston choices.

Any updates?

I messaged the guys at molnar. Told them I wanted a 4” stroke 3” main 2.25” Pontiac rod journal. They said they can make me one. I told them I would place a deposit in the new years and they said no problem. Said production scheduled to start in august

Look what arrived today!
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https://uploads.tapatalk-cdn.com/202...97134ef2e4.jpg
https://uploads.tapatalk-cdn.com/202...10eec452b8.jpg

Hopefully there’s a 4.00 in crankshaft on my doorstep before long. :)


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4" stroke crankshaft arrived today. Man that package is heavy...

If you get a chance weigh that crank and let us know what it weighs. Just curious of weight compared to Crower billet crank. Thanks

I can tell you with packaging it weighs 88 lbs. I'll try to get a weight on the bare crank when I take it to the machine shop.

So what is the difference between the Molnar crank and rods compared to what Butler offers? Scat or Eagle.

I ordered one because they offered a pontiac Rod journal/pin. Haven’t seen any like that. Now if I wanted I could use the set of max-a-lite A-beam tomahawk Rods I have that are 706 grams and build a nice 4” stroke combo in a 400 GTO block

One of the critical things you need to have your machine shop check…is check the crank for straightness.