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new timing cover and tab not work?

Old Oct 9, 2010 | 10:28 AM
  #1  
dvardaman85's Avatar
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
new timing cover and tab not work?

i bought

PRO-66151 and

SUM-G3205

however it appears that if i installed these, the timing marker would never line up. is there some special marker i need?

kinda looks like it is designed to mark timing from the side.
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Old Oct 9, 2010 | 11:04 AM
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
Re: new timing cover and tab not work?

my origianal timing marker that is installed shows timing at about 12 o'clock position and the new one would be like 1 30 position or somethin
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Old Oct 9, 2010 | 02:23 PM
  #3  
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From: Macedon, near Rochester, NY.
Car: 85 TA (sold), 88 Corvette, 02 Monte
Re: new timing cover and tab not work?

http://www.chevytech.com/2c44o3.html

I'm not sure what size balancer you have, but following the "0 to 30" column of this chart, redraw your timing line. (Cut some heavy paper or masking tape and wrap that around, its easier than trying to bend the ruler) Clean it off first, then paint the line on.

During my first engine swap, I noticed it was way off while checking my tdc before putting the heads on. I redrew it the old fashioned way, with a piston stop. About a year later I found this web site, and sure enough the line I drew was about 2.1 inches on the 8 inch balancer.
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Old Oct 9, 2010 | 02:35 PM
  #4  
dvardaman85's Avatar
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
Re: new timing cover and tab not work?

hm ok so i can basicly just redraw my 0 degree mark. ok cool.

would it be recomended for me to replace my harmonic dampner on the old rust bucket or do they last forever and if i do replace it do i have to buy performance product if i wish to use my new timing cover and pointer

oh and thanks for the advice sparkytfl

Last edited by dvardaman85; Oct 9, 2010 at 02:36 PM. Reason: forgot something
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Old Oct 9, 2010 | 02:41 PM
  #5  
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Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
Re: new timing cover and tab not work?

"rust bucket" is a copyright trade mark, you need to find a new name for your car.
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Old Oct 9, 2010 | 03:25 PM
  #6  
dvardaman85's Avatar
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
Re: new timing cover and tab not work?

ya ok!!! ha ha ha.. so the question is what year had the timing mark @ the 2 o'clock position on the 6.75 in blancer that i could buy i read somewhere on here that the tpi guys had a 130 position because of intake reasons do any of us have 2 o'clock marks?
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Old Oct 9, 2010 | 09:07 PM
  #7  
dvardaman85's Avatar
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
Re: new timing cover and tab not work?

anybody know of any cars with 8" balancers with 2 o'clock pointers
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Old Oct 9, 2010 | 09:35 PM
  #8  
Tobias05's Avatar
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From: any clime or place...
Car: 1987 Camaro SC, 1999 Z28
Engine: GMPP 350HO, LS1
Transmission: Built 700r4/EDGE 3200, T56
Axle/Gears: 3.42 Eaton 7.625, 3.42 Zexel Torsen
Re: new timing cover and tab not work?

...I do know of such a car.
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Old Oct 10, 2010 | 06:16 AM
  #9  
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Re: new timing cover and tab not work?

If you need a 6-3/4" balancer with a 1:30 position timing mark x-reference to an 88 TPI engine (TBI engines all used the straight-up 12:00 position mark as did many other 305 applications over the years). For an 8" balancer with a 1:30 position mark you have many applications to choose from, for instance a 1980 350 Camaro.
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Old Oct 10, 2010 | 03:52 PM
  #10  
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
Re: new timing cover and tab not work?

ok cool thank you

so is there any documented proof that switching to an 8" blancer vs the origional 6-3/4" blancer would possitively affect engine performance

thanks
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Old Oct 18, 2010 | 07:22 PM
  #11  
dvardaman85's Avatar
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From: NC USA
Car: 1985 Chevy Camaro
Engine: 305
Transmission: 700R4
Axle/Gears: 3.08
Re: new timing cover and tab not work?

bump
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Old Oct 18, 2010 | 08:44 PM
  #12  
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Re: new timing cover and tab not work?

No. It will probably do a better job at dampening torsional vibrations but as far as making power, pretty much everyone has found it makes little or no difference.
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