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60mm small block cam question #1471457
07/21/13 01:35 PM
07/21/13 01:35 PM
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LONG ISLAND
fishy340 Offline OP
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fishy340  Offline OP
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i was wondering if any of you know if the fireing order is standard or different? And one more was LSM the guys who provided these for ma mopar? thanku guys.

Last edited by fishy340; 07/21/13 01:35 PM.
Re: 60mm small block cam question [Re: fishy340] #1471458
07/21/13 03:45 PM
07/21/13 03:45 PM
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Lynchburg, VA
Leon441 Offline
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LSM was one company I think a couple guys did them. There were a couple firing orders too if I recall correctly.

My cam was a double swap but, I think there were some that just swapped 7&4. It is easy to look at a cam and figure it out.

Just take a marker and mark the intake lobes. You can use a different color for the right and left banks to disrupt confusion. Then simply roll it across a flat surface counting off the firing order. There are only three possibilities.

18436572
18736542
18726543

After counting three intake events you should know which cam you have.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: 60mm small block cam question [Re: Leon441] #1471459
07/21/13 05:30 PM
07/21/13 05:30 PM
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Utah and Alaska
astjp2 Offline
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The firing order sway is basically making it a ford Windsor firing order. Tim


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Re: 60mm small block cam question [Re: Leon441] #1471460
07/21/13 07:04 PM
07/21/13 07:04 PM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline OP
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ty guys,but im pretty sure i'll have to go with another cam core.This is gonna need a ton of lobe seperation that i dont believe can be done w this core.Anyone need a 60mm ugl for an all motor piece.lol

Re: 60mm small block cam question [Re: fishy340] #1471461
07/21/13 08:02 PM
07/21/13 08:02 PM
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bean town ....Ca
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WHITEDART Offline
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is this a power adder motor or N/A. how much separation do you need those ugl cams really limit your choice's.. 60 mm blank cores are not cheap I think comp gets 1000$ for a core but not sure. that is why I used a 55mm cam core.... 300$ core


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Re: 60mm small block cam question [Re: WHITEDART] #1471462
07/21/13 08:08 PM
07/21/13 08:08 PM
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Plymouth Meeting, PA
bigtimeauto Offline
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My BB are 60mm custom from LSM I use a LS1 firing order, although I don't get them to grind them.


BB, TT5,Procharged 3300lb Street Car 4.79/154
Re: 60mm small block cam question [Re: WHITEDART] #1471463
07/21/13 09:22 PM
07/21/13 09:22 PM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline OP
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fishy340  Offline OP
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no sir not n/a,and nothing is cheap!!!! 1295 for belt drive etc etc cost to go fast we all know that..

Re: 60mm small block cam question [Re: astjp2] #1471464
07/21/13 10:35 PM
07/21/13 10:35 PM
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Lynchburg, VA
Leon441 Offline
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Quote:

The firing order sway is basically making it a ford Windsor firing order. Tim




Not really. The offset of each bank of cylinders is opposite with a Ford. The PS bank leads the DS on Fords.

The firing order is the same as LS1 GM.

You take a 5.0 Ford HO motor and turn it upside down and count the cylinders as if it were right side up Mopar or GM and yes it is LS1. Just not close enough to prove your statement.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: 60mm small block cam question [Re: Leon441] #1471465
07/22/13 01:03 AM
07/22/13 01:03 AM
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AndyF Offline
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Ford used all of the three popular firing orders. The original Flathead firing order is what people call the 4/7 swap now.

Re: 60mm small block cam question [Re: AndyF] #1471466
07/22/13 06:47 PM
07/22/13 06:47 PM
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Lynchburg, VA
Leon441 Offline
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I am not going to argue this until I am blue in the face. Just no point.

Fords are offset backwards from bank to bank. How can you share a firing order with an engine that does not even have the cylinders in the same arrangement with each other?


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: 60mm small block cam question [Re: Leon441] #1471467
07/22/13 07:09 PM
07/22/13 07:09 PM
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DakFink Offline
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I guess some people just don't know fords as well as they think or should.

FORD does not count their cylinders in the same order that GM and Mopar do therefore any Firing order that may be Numerically the same Physically is not.

IE: Ford numbering is 1234 on the left bank of cylinder front to back, 5678 on the right bank of cylinders front to back.

GM and Mopar are 1357 on left bank front to back and 2468 on the right bank front to back.

Though the FORD numbers might stack up the same in the firing order, the cylinder that is actually firing at that moment is not the same.

Re: 60mm small block cam question [Re: Leon441] #1471468
07/22/13 07:10 PM
07/22/13 07:10 PM
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AndyF Offline
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From an engineering standpoint it doesn't matter which bank is forward, or how the cylinders are numbered.

The crankshaft loading just depends on the order that the rods apply the load to the pins. It is extra confusing since you have to renumber the cylinders to get them on a consistent basis.

Re: 60mm small block cam question [Re: AndyF] #1471469
07/22/13 07:38 PM
07/22/13 07:38 PM
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Lynchburg, VA
Leon441 Offline
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Crankshaft loading is only part of why firing orders are selected as preference.

Sure a HO 302 Ford or mopar with a 7/4 3/2 swap will load the same crank throws at the same time but, I would hardly say from an engineering standpoint that one compares to the other. Maybe if you are strickly trying to engineer crankshaft load placement.

Intake manifold design and RPM is one of the reasons most engine builders I have talked to choose alternate firing orders.

None of this discussion has much to do with what the OP was asking.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.






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