self aligning roller rocker question.
01-28-2010, 09:53 PM
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Car: 1988 Firebird Formula WS6
Engine: 305 tpi lb9
Transmission: 5 speed
Axle/Gears: 3.45
self aligning roller rocker question.
Ok this may be stupid question. I am looking at comp cam 1.6 roller tip rocker that have the ball pivot since I think they will fit the best under centerbolt vc. PN is 1418-16.
I know the description says self aligning like I need but looking at the picture shows no grooves in the roller so how do they self align? I am guessing it is very slight and not noticable in pic?
I know that other full roller rockers have the groove.
I know the description says self aligning like I need but looking at the picture shows no grooves in the roller so how do they self align? I am guessing it is very slight and not noticable in pic?
I know that other full roller rockers have the groove.
01-28-2010, 10:18 PM
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Car: 91 B4C "police special service"
Engine: L98 494hp
Transmission: tko-600 on order
Axle/Gears: 3.23 true trac
Re: self aligning roller rocker question.
should have two little tangs/disc on outside of roller to keep on the valve stem. Might be wrong pic. on there too
01-28-2010, 11:14 PM
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Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: self aligning roller rocker question.
You can fit Comp's "Pro Magnum" rockers under a stock perimiter-bolt valve cover (maybe centerbolt too, no experience there) if you just use the thick cork gaskets. I did it and they cleared just fine. The ProMags need the 1/4" longer ARP studs to get the poly-locks to engage deep enough, but it still clears just fine. And thats a rediculously tough set of rockers.
01-29-2010, 01:41 PM
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Car: 1988 Firebird Formula WS6
Engine: 305 tpi lb9
Transmission: 5 speed
Axle/Gears: 3.45
Re: self aligning roller rocker question.
thanks for the pic, now I understand how they self align. my heads are at the shop right now. I wish I would have known they require longer studs but are you sure we are talkin about the same rocker? the pic you show looks like a full roller and the ones I have are a ball pivot with long slot.
01-29-2010, 01:44 PM
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Car: Red 1987 IROC Convertible
Engine: 305 LB9 TPI
Transmission: T5 5-Speed
Axle/Gears: 9-Bolt 3.45
Re: self aligning roller rocker question.
The stock rocker studs work just fine with those rockers.
01-29-2010, 01:47 PM
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Car: 1988 Firebird Formula WS6
Engine: 305 tpi lb9
Transmission: 5 speed
Axle/Gears: 3.45
Re: self aligning roller rocker question.
i see you have the 1.52's, did they fit under the valve covers ok?
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01-29-2010, 02:20 PM
#8
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Re: self aligning roller rocker question.
Make sure you need self-aligning rockers. Might not be an issue with your '88, but my '87 has centerbolt valve covers and it doesn't have self-aligning rockers.
01-29-2010, 05:24 PM
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Car: Red 1987 IROC Convertible
Engine: 305 LB9 TPI
Transmission: T5 5-Speed
Axle/Gears: 9-Bolt 3.45
Re: self aligning roller rocker question.
01-29-2010, 06:24 PM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
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Axle/Gears: QP 9" 3.73
Re: self aligning roller rocker question.
The fulcrum on the full rollers is thicker than the stock type pivot ball meaning there is not enough thread left on stock studs for posilock engagement
Was just an example to show how SA rockers align on valve stem
01-31-2010, 10:25 PM
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Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: self aligning roller rocker question.
thanks for the pic, now I understand how they self align. my heads are at the shop right now. I wish I would have known they require longer studs but are you sure we are talkin about the same rocker? the pic you show looks like a full roller and the ones I have are a ball pivot with long slot.
These are the 'Pro Magnum' rockers... the BIG bearing in the middle is the reason for needing the longer studs:
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