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Molnar  small block crankshafts #3267082
10/29/24 01:58 PM
10/29/24 01:58 PM
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RAY1969CARS Offline OP
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hi guys, I’ve heard a lot of talk about these cranks. How much power can they handle? How much RPM are you pushing them to?
I’m planning on a 3.79 2.100 rod 6 inch Carrillo H beam rods 4.185 bore. 9” deck. i got 1.7 1.75 rockers Old craftsman w8s Bullet cam yet to made So I have no idea how much it will spin to or power.

crank ,pistons and cam parts i need I have no idea about compression yet. i’m thinking 12.1 to 13

Last edited by RAY1969CARS; 10/29/24 02:16 PM.
Re: Molnar  small block crankshafts [Re: RAY1969CARS] #3267094
10/29/24 03:54 PM
10/29/24 03:54 PM
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Here
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jcc Offline
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What block?


"When one’s appeal is emotional, it does not matter if there is no substance."
Re: Molnar  small block crankshafts [Re: jcc] #3267096
10/29/24 04:11 PM
10/29/24 04:11 PM
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New Smyrna Beach FL
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Says 9 inch has to be a old truck block at 9 inch deck real close to my old W9 motor spun it 7500 threw the traps 7800

Re: Molnar  small block crankshafts [Re: scottb] #3267105
10/29/24 05:21 PM
10/29/24 05:21 PM
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Maybe he went this direction? grin
I have both heights of the A8, think is the tall version

IMG_5955.JPG

"When one’s appeal is emotional, it does not matter if there is no substance."
Re: Molnar  small block crankshafts [Re: jcc] #3267111
10/29/24 06:00 PM
10/29/24 06:00 PM
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moparacer Offline
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12-13:1 with a W8? should add about 2 points to that....

I haven't used the small block s but the Molnar crank in my BB has survived years of beating at 850 hp.


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 5.46-125
414 cid SB Dragster 7.65-174
Re: Molnar  small block crankshafts [Re: RAY1969CARS] #3267119
10/29/24 06:43 PM
10/29/24 06:43 PM
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Melbourne , Australia
LA360 Offline
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Originally Posted by RAY1969CARS
hi guys, I’ve heard a lot of talk about these cranks. How much power can they handle? How much RPM are you pushing them to?
I’m planning on a 3.79 2.100 rod 6 inch Carrillo H beam rods 4.185 bore. 9” deck. i got 1.7 1.75 rockers Old craftsman w8s Bullet cam yet to made So I have no idea how much it will spin to or power.

crank ,pistons and cam parts i need I have no idea about compression yet. i’m thinking 12.1 to 13


You're not going to break one.
Tom Molnar is a pretty switched on guy, he was the head engineer at Oliver for a number of years, before going out on his own.


Alan Jones
Re: Molnar  small block crankshafts [Re: moparacer] #3267128
10/29/24 07:59 PM
10/29/24 07:59 PM
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RAY1969CARS Offline OP
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850 that’s good horsepower

Re: Molnar  small block crankshafts [Re: LA360] #3267129
10/29/24 08:00 PM
10/29/24 08:00 PM
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RAY1969CARS Offline OP
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Originally Posted by LA360
Originally Posted by RAY1969CARS
hi guys, I’ve heard a lot of talk about these cranks. How much power can they handle? How much RPM are you pushing them to?
I’m planning on a 3.79 2.100 rod 6 inch Carrillo H beam rods 4.185 bore. 9” deck. i got 1.7 1.75 rockers Old craftsman w8s Bullet cam yet to made So I have no idea how much it will spin to or power.

crank ,pistons and cam parts i need I have no idea about compression yet. i’m thinking 12.1 to 13


You're not going to break one.
Tom Molnar is a pretty switched on guy, he was the head engineer at Oliver for a number of years, before going out on his own.


A lot of people are saying good things. I think that may be my route.

Re: Molnar  small block crankshafts [Re: RAY1969CARS] #3267134
10/29/24 08:59 PM
10/29/24 08:59 PM
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MI, usa
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I spin my 4.50" stroke Molnar BB crank to 7100 every pass with
4.530" pistons hanging off them. Makes enough power to dip into the 8s@3450lbs. Tom builds nice parts. Every spec was .0000 to spec. Rods are nice as well.
Doug

Last edited by dvw; 10/29/24 09:00 PM.
Re: Molnar  small block crankshafts [Re: dvw] #3267137
10/29/24 09:06 PM
10/29/24 09:06 PM
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RAY1969CARS Offline OP
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Originally Posted by dvw
I spin my 4.50" stroke Molnar BB crank to 7100 every pass with
4.530" pistons hanging off them. Makes enough power to dip into the 8s@3450lbs. Tom builds nice parts. Every spec was .0000 to spec. Rods are nice as well.
Doug


Hell, yes, see that’s what I wanna hear

Re: Molnar  small block crankshafts [Re: RAY1969CARS] #3267157
10/29/24 11:20 PM
10/29/24 11:20 PM
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Portage,michigan
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B3422W5 Offline
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At the end of the day, Molnar, Scat, Eagle etc are Chinese forgings machined here.
All good stuff that can take a lot of abuse.
Molnar stuff, in particular, seems to have a very good reputation.


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car

1.41 best 60 foot
6.54 @ 105.20



Re: Molnar  small block crankshafts [Re: B3422W5] #3267159
10/29/24 11:24 PM
10/29/24 11:24 PM
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RAY1969CARS Offline OP
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Originally Posted by B3422W5
At the end of the day, Molnar, Scat, Eagle etc are Chinese forgings machined here.
All good stuff that can take a lot of abuse.
Molnar stuff, in particular, seems to have a very good reputation.


completely understood just trying to get a track record Again, I know there’s no guarantees, but I’m not all out effort
700 Hopefully to 8 I would say Spinning to at least 8.
that’ll be a hand full for me

Re: Molnar  small block crankshafts [Re: RAY1969CARS] #3267164
10/30/24 12:12 AM
10/30/24 12:12 AM
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Portage,michigan
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Originally Posted by RAY1969CARS
Originally Posted by B3422W5
At the end of the day, Molnar, Scat, Eagle etc are Chinese forgings machined here.
All good stuff that can take a lot of abuse.
Molnar stuff, in particular, seems to have a very good reputation.


completely understood just trying to get a track record Again, I know there’s no guarantees, but I’m not all out effort
700 Hopefully to 8 I would say Spinning to at least 8.
that’ll be a hand full for me


Molnar offers a nice fully balanced kit complete.


69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car

1.41 best 60 foot
6.54 @ 105.20



Re: Molnar  small block crankshafts [Re: B3422W5] #3267184
10/30/24 08:06 AM
10/30/24 08:06 AM
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Wichita
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GY3 Online content
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Not quite what you're looking for, but we have a 4.25 stroke BB crank. We were one of the first ones to buy Molnar back in 2016. We also have his 7.1" rods.

We are pushing a heavy car down the track and the numbers show well over 800 crank HP. Zero issues.

Tom is a great guy. Yes, he actually answered the phone when I had questions about rod side clearances!

He worked at Oliver, owned and then sold K1 and started Molnar. His stuff is NOT the same as anyone else's. Some buy the same cheap rods and put their name on them but his stuff is completely different.

I am the poster child for abusing parts. Lots of dragstrip passes, street miles and nitrous. I would always recommend Molnar.


'63 Dodge 330

11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.

9.92 @ 135mph with a 350 shot of nitrous and 93 octane pump. 1.43 60 ft. 3,750 lbs.

Re: Molnar  small block crankshafts [Re: GY3] #3267243
10/30/24 01:47 PM
10/30/24 01:47 PM
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RAY1969CARS Offline OP
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Originally Posted by GY3
Not quite what you're looking for, but we have a 4.25 stroke BB crank. We were one of the first ones to buy Molnar back in 2016. We also have his 7.1" rods.

We are pushing a heavy car down the track and the numbers show well over 800 crank HP. Zero issues.

Tom is a great guy. Yes, he actually answered the phone when I had questions about rod side clearances!

He worked at Oliver, owned and then sold K1 and started Molnar. His stuff is NOT the same as anyone else's. Some buy the same cheap rods and put their name on them but his stuff is completely different.

I am the poster child for abusing parts. Lots of dragstrip passes, street miles and nitrous. I would always recommend Molnar.


thank you for your input. I know I should be going with one of the American brands, but my pocketbook just does not allow it right now.







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