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Daddiojoe
PostPosted: Wed Dec 05, 2007 2:54 pm 
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Location: Chelsea, MI
Car Model: 71 Dodge D100 64 Plymouth Valiant Wagon
So I took my head into the machine shop today. Planning on taking .1" off. He asked if I needed new pushrods. I thought that I could take up the slack with the adujsters, but then I really don't know.

Do I need new pushrods??? If so, where do I get them?

Thanks,

Joe

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Joe Hoppe

71 D100 225 Super Six 727 AT on 2008 Crown Vic CopCar frame

64 Valiant Wagon 225 904 AT 3:23 8.75"
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slantzilla
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PostPosted: Wed Dec 05, 2007 3:29 pm 
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You will not know for sure until you assemble the engine and see for sure. A lot depends on valve stem length and cam profile. If you do need pushrods, www.pushrods.net is the place to go.

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Daddiojoe
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PostPosted: Thu Dec 06, 2007 10:57 am 
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So "zilla,

The way I'll know is if I can get correct valve lash? What about geometry?

Thanks,
Joe

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Joe Hoppe

71 D100 225 Super Six 727 AT on 2008 Crown Vic CopCar frame

64 Valiant Wagon 225 904 AT 3:23 8.75"
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Joshie225
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PostPosted: Thu Dec 06, 2007 1:59 pm 
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With shaft mounted rockers the rocker to valve geometry is fixed as long as the valve stem height doesn't change. If you don't have any adjuster threads showing below the rocker arm your pushrods are too short. Ideally you only want a thread or two showing below the rocker.

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Joshua
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70valiant
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PostPosted: Thu Dec 06, 2007 5:51 pm 
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I had 0.100" taken off of the head I am using now. It is on it's second engine and I haven't needed shorter pushrods on either engine.

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Aggressive Ted
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PostPosted: Thu Dec 06, 2007 6:32 pm 
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I reground my cam so everything equaled out with what was removed from the block and head. I am using the stock push rods.

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Aggressive Ted

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Daddiojoe
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PostPosted: Thu Dec 06, 2007 7:30 pm 
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Thanks, Guys! That's what I like to hear--

keepin it simple on slanted six side,

Joe

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Joe Hoppe

71 D100 225 Super Six 727 AT on 2008 Crown Vic CopCar frame

64 Valiant Wagon 225 904 AT 3:23 8.75"
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slantzilla
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PostPosted: Fri Dec 07, 2007 6:11 am 
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Quote:
If you don't have any adjuster threads showing below the rocker arm your pushrods are too short.
That's backwards isn't it? No thread would be pushrods too long. :?

Rollers will take a shorter pushrod than stockers too. DAMHIK. :roll:

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Joshie225
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PostPosted: Fri Dec 07, 2007 7:04 am 
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Quote:
Quote:
If you don't have any adjuster threads showing below the rocker arm your pushrods are too short.
That's backwards isn't it? No thread would be pushrods too long. :?

Rollers will take a shorter pushrod than stockers too. DAMHIK. :roll:
Oops! Yeah, you need shorter pushrods if there are no adjuster threads showing below the rocker arm.

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