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L98 Cams

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Old Oct 19, 2007 | 03:59 PM
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nomad88z's Avatar
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L98 Cams

What type of cam came standard in the L98? Was it a hydraulic flat tappet or hydraulic roller?

Also, does anybody know what the dimensions of the valvesprings were on the L98 aluminum heads?

And one last thing....if anybody knows where to find the flow dimensions of the L98 aluminum heads, that'd be much appreciated.

Thanks guys.
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Old Oct 19, 2007 | 04:31 PM
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: L98 Cams

Hydraulic roller.
I believe they were 1.25" OD valve springs on those heads. I'm about 95% sure of that.

There are flow values for those heads floating around the internet, even on this very board. They aren't very amazing though, i'll warn you now. The casting number should be 113, so search for "113 flow numbers" or something and see what you find.
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Old Oct 19, 2007 | 04:36 PM
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Re: L98 Cams

i think they are around 199 cfm intake and 150 on the exhaust. all tapped out by .500 lift or so
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Old Oct 20, 2007 | 04:02 PM
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Re: L98 Cams

Wow, I would have thought they were alot better. Alright, off they come and to the shop they go.

Thanks guys.
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