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Thread: ls9 cam
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09-26-2012, 03:46 PM #1
ls9 cam
Hi, does anyone recommend a ls9 cam on a naturally aspirated 4.8 silverado? The engine is stock as far as a cold air intake and exhaust. I heard somewhere that the ls9 cam is only good for forced induction but does anyone think i could add some ponies with that cam in my engine??? Thanks.
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09-26-2012, 04:15 PM #2
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
What year is your truck? Unless your 4.8 is a gen 4 it won't work as is because the cam sensor location and it is 4x instead of 2x I believe.
1998 Trans Am WS6 - Phantom
421 CI LQ9, Tick Performance Custom Cam, TFS 255cc LS3 heads, Kooks 2" LT headers, Kooks 3" True Duals w/ high flow cats, FTP 104 lid, Speed Density Tune, 4" silicon tube, LS6 VCT, FAST 102 Intake, NW 102 TB, Oil Catch Can, SLP Bilstein Shocks w/ Vogtland Springs, CTS-V 4-piston Calipers w/C6 Z06 rotors, Stainless Steel Brake Lines, R1 concepts premium rotors, Hawk HP+ brake pads, VFN WSQ Hood, C5-R timing chain, SLP oil pump, E85 tune, Walbro 450 fuel pump, Deatschwerkz 95# injectors, Breathless performance headlights, Frost Tune, !HVAC.
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421 LQ9 14.8:1 on E85 Build/
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09-26-2012, 08:09 PM #3
Its a 2004 chevy silverado. And what do you mean by 2x and 4x?
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09-27-2012, 07:16 AM #4
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
It is just that the cam reluctor is different, which is how the computer knows where its current position is. That is the best way I can explain it.
Gen 4s cam don't have the cam sensor reluctor at the back of the cam so the only way to make it work is to swap in a gen 4 cam sprocket, front cover with cam sensor in it and lengthen the wiring harness for the sensor.
I would think you are better off swapping in a ls6 cam.
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09-27-2012, 08:59 AM #5
Okay thanks. Any ideas where i could buy for a good price a ls6 cam? Doesnt matter if it's used.
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09-27-2012, 09:29 AM #6
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Black/ Silver- 98 TA WS6/ 01 C5 Corvette
Well here it is for $264 new:
http://sdparts.com/details/gm-factory-replacement-parts/12565308
And summit has it for $287 new:
http://m.summitracing.com/parts/nal-12565308
You could also try ebay. You will need ls6 valve springs which can be bought for between $60-80 new.
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09-27-2012, 10:25 AM #7
Okay cool, thanks.
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