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cam to big???

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Old Oct 15, 2004 | 08:51 PM
  #1  
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Default cam to big???

I have a corsa exhaust and high flow cats and my exhaust sound bada**. I want a high lift cam to get that coppy idle, and for the power reason. i was told i could go with a TR 220/220 114LSA....551 lift, from thunder racing. and i woundn't need a stall covertor, is that to big. What else would i need for the valvetrain (besides springs) to have my truck rev to 6300 with no problem.
Thanks for any help!
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Old Oct 15, 2004 | 09:09 PM
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Well, overlap will play a bigger role in the choppy idle you are after, rather than valve lift. None of the truck members that I am aware of have Thunders 220 @ .050 camshaft, so it will be hard to get an honest answer. Comparing it to other Comp camshafts and the larger duration pattern vs. a stock camshaft, it shouldn't meet the standards of a stock rpm band down low. You could though, install a trailblazer stall converter for cheap paired with the cam. Might work quite well.

Relatively speaking, peak hp should easily clear your 6300rpm goal w/ room to expand on a decent shift rpm. Possibly looking at 6500+rpm on a smaller cubed V8.
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Old Oct 15, 2004 | 10:19 PM
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I ran the TR220 on a 112 in my 6.0...

I never found the 'top end' on that thing. I shifted at a meak 6,200, and it was still going strong. It really wakes up by 4,000rpm. I always thought it felt like a small nitrous shot. Power is quite linear. The harder you rev it, the harder it pulls.

You won't NEED a converter, but you will probably feel that you'll want one. I lost just enough low end for me to swap to another cam. I was looking for something more daily-driver friendly with the stock 'verter. I also drive in a very hilly area, so I really like that low end torque more than top end horsepower.

Here is a clip of it at 650rpm idle Turn it up!

Besides springs like 918's, it's probably a good idea to get hardened pushrods.

I don't think TI retainers are really needed until you get over "rod bolt" territory, like 6,500rpm.
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Old Oct 16, 2004 | 06:23 AM
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i honestly forgot you used it marc. sry
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Old Oct 16, 2004 | 09:46 AM
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No problem!
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