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thumpr cam 275thr7

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Old Jan 22, 2014 | 08:59 PM
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Default thumpr cam 275thr7

okay i'm looking to install this cam in my 2002 gmc sierra z71 4x4 i'm installed cams in a 350 sbc but never tore into a ls block just wondering what up grades should i do for this cam such as rocker arm rato or springs has anyone installed this cam i want my truck to sound nasty but not tear the motor up is stock rocker arms okay and springs or do i need an up grade stock lifters okay? here is a link to the cam.

http://www.compperformancegroupstore...y_Code=THMSBC7
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Old Jan 22, 2014 | 09:01 PM
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also its an lm7 engine
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Old Jan 22, 2014 | 09:45 PM
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Pushrods, springs, do comp rocker upgrade hotwire kit
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Old Jan 22, 2014 | 09:58 PM
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stock leangth push rods? and what rocker arm ratio would a 1.7/1 work fine i dont want to put the motor together and the valves hit the pistons
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Old Jan 23, 2014 | 04:56 PM
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I'd recommend a 2600-3k stall TC with that cam. Otherwise I'd go with a smaller cam like a 215/222 109lsa+2 (215 LSL #13014 lift .604", 222 XE rpm high lift #3714 lift .566".) The IVC is only slightly higher than the thumpr cam, and it has about 1/2 * overlap so you'll still have a clearly cammed sound, but not nearly as much as the thumpr with 8* overlap.
Anyway here's a few trucks with the thumpr cam and same engine.
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Old Jan 23, 2014 | 05:25 PM
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my trans is shot so i'm rebuilding it with power in mind and i'm putting a 2k still in it
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Old Jan 23, 2014 | 05:28 PM
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im ordering the monster in a box ss heavy duty kit
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