Too big of a cam?
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Too big of a cam?
I called TR and talked to a guy named Shane who was very helpful in helping me spec out a custom grind cam for my 383. He says its great and they're running the same grind on a customers car now that is making great numbers but IMO, the cam seems huge and I want to know if its going to move my power curve too far up the RPM range. Specs are 247/245 .652/.620 110LSA. Motor is 383, stock bore, 11.1 CR, ported stock heads, 85mm PP intake and TB. I don't mind having to wait till 3.5K or so for the power to come in, but anything over that just doesn't really appeal to me. Any help is greatly appreciated.
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i think it would be alittle big for a 383 but i guess it depends on your goals. that cam will still make decent torque but still be way short compared to something like a 240/244 cam. it also probably wouldn't peak till 6300-6400 just guessing so you would probably will have to shift around 6700-6800 to get peak performance. hit up predator z or patrick g and see what they say. tell then what your goals are . what are your goals anyways ? any flow numbers on your heads ? what intake are you going to be running ?with a mild build with just a decent set of heads and an ls6 intake a mild cam would probably work alot better than a monster.
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is your car a track only car? 4000+ stall 4.10 gears? its fine..if its a street car 90% of the time..i would say its way, way to big.. check out a vrx5 cam or similar- tons of low end grunt with a 3.42 rear
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Car is 90% street car, but is still a weekend only car. M6 with 4.10's. I'm already making good low end torque with the stroker but my higher rpm HP #'s were very disappointing with my last cam and it quit making power at 5800. I'm looking for a little more mid range and top end without sacrificing too much torque down low. And sorry no flow numbers on the heads.
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It was an F13 that was in the car when it was stock bottom end. I built the motor due to a spun bearing so the car was built on a tight budget and I reused the cam. The car made 401/420 with the F13 and I was very disappointed with that. Now I am replacing the F13 b/c it has a scarred lobe thanks to a failed lifter.
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IMO that cam is about right for a street car. If it was my car I would go way bigger, you have more cubes to soak up the duration, and people are running cams bigger than that in 346's.
Let us know your results.
-Chris
Let us know your results.
-Chris
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I have a PP 85 mm to help mid range and I am getting more cubes as well. I have a 3500 stall as well. I was told to stick in the 230s but you are an M6 so I think you can go a little bigger and be happy. You will need a spot on tune to make everything work for you though. Good luck.
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I'm using an MS3 in my 402 and have great all around power w/ great driveability using ported 243's though. That cam spec (247/245 .652/.620 110LSA) has too much lift and duration for those heads and the Intake duration is too much for your Manifold IMO. I would do something like the MS3/MS4 or somewhere around those specs (236/242). You should get your heads flowed and spec that cam for your heads to get the best results.