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post #1 of 7 (permalink) Old 11-07-2006, 03:17 PM Thread Starter
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4.6 dohc rockers

just wondering what rockers would be recommended for my 93 mark motor. Going big bore and highly considering using COMP CAMS XTREME XE-R 278 SERIES. Will be naturally aspirated with home sheetmetal intake. thanks, Dave
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post #2 of 7 (permalink) Old 11-07-2006, 03:18 PM
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factory. and htey arent rockers, they are followers.




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post #3 of 7 (permalink) Old 11-07-2006, 05:27 PM
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or splurge for Jesels double-roller followers @ $100 a pop x 32 valves = $3200

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post #4 of 7 (permalink) Old 11-07-2006, 05:56 PM
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So many better ways to get the power gains that $3200 could get you too. I remember that I was excited when those initially came out, until I saw their price tag, haha.

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post #5 of 7 (permalink) Old 11-07-2006, 07:10 PM Thread Starter
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definitely, I"m sure those would free up a few ponies but not near as much as a big old blower that wouldn't cost you all that more I just wasn't sure if the stockers would be able to take a 11 to 1 big bore with a lot of cam. I love comp cams description of these cams. Idle: Very Rough god i love that noise
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post #6 of 7 (permalink) Old 11-07-2006, 10:33 PM
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In order to really see an advantage with those you would have to run some pretty high rpms. It's not like a 5.0 at all where you seen a lot of difference mid range.

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post #7 of 7 (permalink) Old 11-07-2006, 10:59 PM
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Definately agree with Lonnie, they are good pieces, even from the factory. You'll definately be fine with the stockers.

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-97 XR-7
-5.0 Big Bore ...
Ran @ Normal Operating Temps, No Race Tune, No Setup Changes from Daily Driven Configurations
9.0 @ 78 (1/8 Mile only in Abilene )
2.06 60' on Street Tires (BFG G-Force Super Sport 245/50/16)
3805 Lbs, Stock Exhaust Manifolds
Density Altitude = 4132'
That Run, Corrected for Standard Day
1/8 mile: 8.75 @ 82
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