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stock #10110810 heads and 1.6 rockers

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Old Feb 12, 2008 | 11:18 PM
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From: Austin, Texas
Car: 86 iroc
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stock #10110810 heads and 1.6 rockers

i am running casting #10110810 will 1.6 rockers work with a lunati 60101 cam
lift with the 1.6s will be .483 .499
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Old Feb 13, 2008 | 10:13 AM
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Re: stock #10110810 heads and 1.6 rockers

...And your question is..?
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Old Feb 13, 2008 | 05:25 PM
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From: Austin, Texas
Car: 86 iroc
Engine: 383HSR
Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

will the 1.6s work without machine work
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Old Feb 13, 2008 | 05:29 PM
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Car: 1982 Trans-Am
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Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: stock #10110810 heads and 1.6 rockers

Doubt it.
The retainer will be dangerously close to the seals/guide. Chances are those heads have positive seals on them?
Measure and find out how much clearance you have. .060" breathing room is ok.
You can shim the setup higher and use offset locks if you want.
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Old Feb 13, 2008 | 05:47 PM
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From: Austin, Texas
Car: 86 iroc
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Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

how am i supposed to measure the clearance in there
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Old Feb 13, 2008 | 06:08 PM
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Car: 1982 Trans-Am
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Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: stock #10110810 heads and 1.6 rockers

I just posted how about this recently, and i'll be damned if I could find the thread.... It was about valve spring micrometers, and if you really need one...
I just use an old school inside caliper and a digital caliper. Remove the valve spring and measure with the oldschool caliper and measure the caliper with your digital calipers. Total cost is ~$40, and you'll use those tools LOTS.
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Old Feb 13, 2008 | 06:52 PM
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From: Austin, Texas
Car: 86 iroc
Engine: 383HSR
Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

couldnt i just install the rockers and turn the motor by hand a few revolutions feeling for any interference
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Old Feb 13, 2008 | 08:31 PM
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Re: stock #10110810 heads and 1.6 rockers

Originally Posted by iroc.86
couldnt i just install the rockers and turn the motor by hand a few revolutions feeling for any interference
That would work, if the world were perfect. Unfortunately, when things get hot, they change dimensions. I would measure just to be safe.
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Old Feb 13, 2008 | 08:53 PM
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From: Austin, Texas
Car: 86 iroc
Engine: 383HSR
Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

theres no way around pulling some springs to check that clearance huh?
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Old Feb 13, 2008 | 09:49 PM
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: stock #10110810 heads and 1.6 rockers

To be safe, no. Just pull one exhaust and one intake. The rest should be very similar.
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Old Feb 13, 2008 | 09:53 PM
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Car: 86 iroc
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Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

thankx im gonna chek all of this tomorow
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Old Feb 13, 2008 | 11:18 PM
  #12  
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From: Austin, Texas
Car: 86 iroc
Engine: 383HSR
Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

would clearancing the valve guides be someting i can do myself
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Old Feb 13, 2008 | 11:43 PM
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: stock #10110810 heads and 1.6 rockers

Got an angle grinder? I think you can.
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Old Feb 13, 2008 | 11:51 PM
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From: Austin, Texas
Car: 86 iroc
Engine: 383HSR
Transmission: custom 700r
Axle/Gears: moser 9" 3.90
Re: stock #10110810 heads and 1.6 rockers

the only thng is tere on the motor already
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Old Feb 14, 2008 | 12:05 AM
  #15  
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: stock #10110810 heads and 1.6 rockers

So you either
-take the heads off, machine them yourself or get a shop do it
-remove the retainers and grind .050" or thereabouts off the bottoms, apparently that'll work
-get some shims and some .050" offset keepers and put them on.

Pick one. But measure it first, you might not even need to. Might.
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Old Feb 14, 2008 | 01:54 PM
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With swirlport heads, you're already beyond any flow improvement with increased lift at .450". You're simply wasting your time and money.
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