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stud or shaft mount? 

 

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 Post subject: stud or shaft mount?
Posted: Fri Jul 08, 2005 12:54 pm 
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rollers... what should i get. stud or shaft? which is cheaper? better? why?

am wanting twisted wedge heads or edelbrock rpms(prefer the TWs), and the TW only take yella terra shaft mount, where the edelbrock take stud or shaft.

shaft is better yeh? but also twice the price. worthit? will i be paying almost that for girdles plates etc?

ta.
jamie.

 

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Posted: Fri Jul 08, 2005 2:07 pm 
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eh never mind im goin edelbrocks now.. and usin stock bolt on parts, ie shaft mount rockers.

 

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Posted: Fri Jul 08, 2005 2:22 pm 
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Technically stud rockers offer beter strength and stability. If you were going to race the engine and run large lift cams and high rpm etc then I would go stud but for a street engine either will be fine IMO.
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Posted: Fri Jul 08, 2005 2:37 pm 
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While we're on the topic, what is pedestal mount?

 

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Posted: Sat Jul 09, 2005 10:12 pm 
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The truth of the matter is it depends on what roller rocker you are using. A pedestal mount Yella Terra Platnium roller rocker with its large shafts and bearings is stiffer than the Crane gold race on 3/8" studs. The stud mount can be made stiffer by using longer studs and a "stud girdle" (aluminium plate that ties all of the rocker studs together and stops deflection) but then the price becomes comparable to the more expensive platnium series....
For most people who dont see the high side of 6000rpm - pedestal mount rockers will be more than sufficient.
Shane

 

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Posted: Sat Jul 09, 2005 11:25 pm 
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I just asked because I've picked up some AFR 1492's which are pedestal mount :)

 

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Posted: Sun Jul 10, 2005 2:36 am 
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Its the pissy bolts that hold the pedestal down.But the Stealth shaft type are o/k as they share load between inlet and exhaust rockers..
Good quality stud rockers are from $480.00

 

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Posted: Sun Jul 10, 2005 6:11 pm 
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Waggin wrote:
I just asked because I've picked up some AFR 1492's which are pedestal mount :)


Oh no... I created a monster.

they are the same ones I have... If you want to know all the stuff that you need to do to get them on, that performance shops dont tell you - ask me..

 

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Posted: Sun Jul 10, 2005 11:20 pm 
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XR8Chic wrote:
Waggin wrote:
I just asked because I've picked up some AFR 1492's which are pedestal mount :)


Oh no... I created a monster.

they are the same ones I have... If you want to know all the stuff that you need to do to get them on, that performance shops dont tell you - ask me..


Well they come with valvetrain.. did you go for different springs? Apparently the supplied springs arent too good for >0.500" lift.

Which rockers did you go for ?

 

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Posted: Mon Jul 11, 2005 12:11 am 
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Ohh No not this again!!! Yes you are right..AFR springs are alittle soft....

 

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Posted: Wed Jul 13, 2005 1:19 am 
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A change to Comp cams 987's will fix the floating vavle problem with cams around .550-.600" lift
Shane

 

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