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roller rockers

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Old 04-28-2009, 01:59 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
roller rockers

I have a stock 87 350 TPI, rockers are 1.5 stock.
Would the 1.6 make somewhat of a diff, meaning is it worth the money?
What stud size would I need if I were to consider this?
Old 04-28-2009, 04:43 PM
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"Somewhat of a difference" is a pretty good way to put it. "Worth it" is probably not a good way to put it.

The rockers are available for both 3/8" and 7/16" studs. You don't have to change studs to change rocker ratio. That's more about high spring rates and high RPMs, rather than rocker ratio.

You'll get more benefit out of a full roller rocker like Comp Pro Magnums than just a change from 1.5 to 1.6. But, that again probably doesn't fit in the "worth it" category.
Old 04-28-2009, 06:59 PM
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Car: 87 iroc z
Engine: 358 tpi
Transmission: 700r4 with transpack
Axle/Gears: 3.42 with powertrax
Re: roller rockers

yea you wont see much of a diff but get full roller 3/8 stud 1.6 ratio self align be shure there self align i think only jegs and perform and i think comp make a set of the self align .
Old 04-28-2009, 07:49 PM
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Re: roller rockers

will the 1.6's clear the stock valve covers?
Old 04-28-2009, 08:49 PM
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Car: 87 iroc z
Engine: 358 tpi
Transmission: 700r4 with transpack
Axle/Gears: 3.42 with powertrax
Re: roller rockers

no kind of roller rocker will clear the stockers i had to get a set from jegs they were 100 bucks and look pretty damn good plus there aluminum look at my pics and youll see them
Old 04-29-2009, 11:16 PM
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Car: 87 Formula 350
Engine: 350tpi
Transmission: TH700R4
Axle/Gears: 3.23 limited
Re: roller rockers

Originally Posted by 3rdgengmachine
no kind of roller rocker will clear the stockers i had to get a set from jegs they were 100 bucks and look pretty damn good plus there aluminum look at my pics and youll see them
not even narrow roller rockers?
Old 04-30-2009, 03:27 PM
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Car: 88 IROC
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Re: roller rockers

Wouldnt be worth it to me on a stock motor.

If you do though and you put alot of miles on the car, go with the Comp Cams steel ones. Aluminum will break eventually.
Old 04-30-2009, 03:40 PM
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Re: roller rockers

Originally Posted by 3rdgengmachine
no kind of roller rocker will clear the stockers
Not true. I run Comp Cams 1.5s and they clear the stock valve covers with a little trimming to the valve cover center bolt support.
Old 04-30-2009, 04:15 PM
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Car: 87 iroc z
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Re: roller rockers

ohh yea cool i never tried just thought by looking theres no way
Old 04-30-2009, 05:08 PM
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Car: 1990 Camaro RS
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Re: roller rockers

Originally Posted by transamice
I have a stock 87 350 TPI, rockers are 1.5 stock.
Would the 1.6 make somewhat of a diff, meaning is it worth the money?
What stud size would I need if I were to consider this?
Going from 1.5 to 1.6 rockers will give you some extra power. It's like putting in a slightly bigger cam without all the work. Going with a roller tip vs full roller depends what you're planning on doing with the car. Your factory studs should be 3/8.

The roller tip rockers will fit under your valve covers and are good for mild applications. I ran a set for 70k miles & they were still in great shape.
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The full roller rockers are for more high performance use and have more clearance issues (valve covers, springs, pushrod length).
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Old 04-30-2009, 06:04 PM
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Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
Re: roller rockers

Honestly just trying to free up some more power with what I got.
Im almost at my sweet spot with my car, I think with a few more simple mods and tweaking I will be pleased.
Just mainly for cruising and take to the track once in while.
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