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Have dyno results - need more cam!

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Old Oct 4, 2002 | 04:45 PM
  #1  
Scott C's Avatar
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Joined: Jan 2000
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From: My Garage - Chicago
Have dyno results - need more cam!

I posted my 350TPI dyno results a few days ago and I've been doing alot of research since then. I was very pleased with the torque numbers, but not thrilled with the hp numbers. Here are the results:

260rwhp @ 4700rpm
340rwtq @ 3500rpm

The mods are in my sig and the roller cam I used for the dyno is a Crane 2031 (264/270 - 208/214 - .438/.452 - 112). The lift is actually .467/.482" with my 1.6 roller rockers. I know this cam is not optimum for my current setup and I plan on swapping it out next weekend.

I'd like opinions on the replacement cam I'm leaning towards. It's a CompCams XR264HR-12 (264/269 - 212/218 - .488/.495 - 112).

From my research about a 350 long tube runner TPI, I think this cam has the best all around specs for making the most power out of my setup. I've learned to look for low advertised duration, less than 220* duration at .050, and a 112* lobe separation. The XR264 covers all of the concerns pretty well, don't you guys think? I'm also using 1.6 roller rockers, so the lift will be closer to .520/.528". I've not read alot about the role that lift plays with a TPI, but I see that most people are running a minimum of .500" lift.

I'm looking to pick up around 25-30rwhp...Will I achieve this goal with the XR264 cam or should I go with the XR269? Opinions, please!
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Old Oct 5, 2002 | 01:01 AM
  #2  
Ions91Z28's Avatar
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Joined: Oct 2000
Posts: 1,780
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From: Warner Robins, Ga
Car: 1991 Camaro Z28
Engine: 350 TPI
Transmission: 700R4
TTT for you, not sure about those cams. but I agree the new one should make a world of difference. Also, might want to think about the LPE 219 cam as well.
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