Q on 113 heads, rockers, guide plates, etc.
10-04-2009, 08:47 PM
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Car: 1991 Camaro RS Vert
Engine: 350 S-TPI
Transmission: T5
Axle/Gears: GU5/G80/J65
Q on 113 heads, rockers, guide plates, etc.
I am installing 113 heads on my 350. The heads I pulled off are 810 heads with self guiding rockers.
The 113 heads have guide plates on them, but I see online that a 90 model vette used self guiding rockers. I am guessing these plates were added later? Or did the vette use both?
Main question, can I use both? Or do I need to pull the plates off and run my self guiding rockers?
If I need to pull the plates off, what is the torque spec for the rocker studs?
Thanks
The 113 heads have guide plates on them, but I see online that a 90 model vette used self guiding rockers. I am guessing these plates were added later? Or did the vette use both?
Main question, can I use both? Or do I need to pull the plates off and run my self guiding rockers?
If I need to pull the plates off, what is the torque spec for the rocker studs?
Thanks
10-04-2009, 10:08 PM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Q on 113 heads, rockers, guide plates, etc.
All alum Vette heads (128 / 113 ) use self aligning rockers.
The "guide plates" you see on SA heads are only plates used at the factory for assembly purposes ; not true hardered plates for use with non SA rocker and pushrods
The "guide plates" you see on SA heads are only plates used at the factory for assembly purposes ; not true hardered plates for use with non SA rocker and pushrods
10-05-2009, 05:43 AM
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Car: 1991 Camaro RS Vert
Engine: 350 S-TPI
Transmission: T5
Axle/Gears: GU5/G80/J65
Re: Q on 113 heads, rockers, guide plates, etc.
Alright, anyone know what the torque spec is for the studs when I put them back in?
03-05-2010, 02:57 PM
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Car: 1991 Camaro RS Vert
Engine: 350 S-TPI
Transmission: T5
Axle/Gears: GU5/G80/J65
Re: Q on 113 heads, rockers, guide plates, etc.
I reused the rockers that I had which were stock, which I am thinking was 3/8.
03-05-2010, 05:48 PM
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Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: Q on 113 heads, rockers, guide plates, etc.
AFR calls for 55-60 ft/lbs for the rocker studs on their aluminum heads.
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