GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

Wrong cam Core!!!!

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Old Apr 22, 2013 | 02:21 PM
  #21  
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Im sure you could probably swap phasers and tune accordingly. Might be your easiest and cheapest solution, just saying....

It is a pain that you have the wrong core for sure but Im pretty sure you could simply do this. if you put a wanted ad up over on tech for the correct phaser ( maybe ecm too? ) for the one matched to your core theres lots of guys watching who will probably have what you need for cheap. not many people mess with VVT so theres a lot of available parts.

What valve springs are you running? Whats the cam specs?
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Old Apr 22, 2013 | 08:55 PM
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Thanks for the suggestion, that is a great idea. I've already got all of the parts on the way to delete these. Now i just need to get the cam replaced.

I'm running some performance valve springs from comp. p/n 26915-16. They're good for up to about a 560 lift which is what I'll go with the new cam.
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Old Apr 23, 2013 | 10:18 AM
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Those springs will work fine with VVT, but not AFM for anyone else who may stumble in here looking for answers
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Old Apr 23, 2013 | 11:34 AM
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you can run an afm cam like i did. the tsp afm cams are .500 lift.
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Old Apr 23, 2013 | 03:16 PM
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Originally Posted by Area47
you can run an afm cam like i did. the tsp afm cams are .500 lift.
According to the guy building my tune, I can get another 40hp from a non-AFM cam.

.500 lift is stock. I'm looking for more lope.
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Old Apr 23, 2013 | 04:31 PM
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lope came from the lsa and duration. 224/232 on a 113.

you can pick up 20hp by changing the fuels.
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Old Apr 23, 2013 | 04:58 PM
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im installing a comp vvt/dod cam with my 1.8 yella terra rockers it will put my lift at 536. my cam # is 689-421-13.with 5460 phaser limiter. and blue ls6 springs.
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Old Apr 23, 2013 | 09:01 PM
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Originally Posted by Area47
lope came from the lsa and duration. 224/232 on a 113.

you can pick up 20hp by changing the fuels.
So I guess I can get another 40 from the non-AFM cam, 20 from changing fuels for a net of 60?? lol, not trying to be a smart ***.

My specs are going to be a 222/224 112 duration with .566 intake lift and .568 lift on the exhaust side.
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Old Apr 23, 2013 | 09:02 PM
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Oh, and I talked with COMP cams today. They're refunding me. No extra hook-ups. They'll pay shipping to take the Cam back.
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Old Apr 24, 2013 | 02:28 AM
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Good deal. Did you decide what direction you are going to go in relation to putting another bumpstick back in it. VVT/ NON VVT.

Comp is good people dealt for years with them and they will go the extra mile to help out.
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