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Good "low grunt" cam?

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Old 10-31-2017, 09:32 PM   #21
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If you are going back to stock rocker, you could do a Straub bushing trunion upgrade, I would stay away from needle bearing trunion upgrades

Thanks for the heads up on that. I did some quick research on this and asked my Engine tech this morning about the value of adding the Staub bushing Trunion upgrade. He was familiar with it, recommended it and had it is stock so we are adding it today!
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Old 11-06-2017, 11:01 PM   #22
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The car has been completed but I won't be able to pick it up till Friday. Looking forward to driving it!

Last edited by Bossdog; 11-06-2017 at 11:04 PM.
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Old 11-07-2017, 09:35 PM   #23
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bossdog - did the shop say what your dyno numbers were? inquiring minds want to know! Post a dyno sheet if you get one.
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Old 11-07-2017, 10:05 PM   #24
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bossdog - did the shop say what your dyno numbers were? inquiring minds want to know! Post a dyno sheet if you get one.
I am headed there in the morning. I will post the base line and new dyno numbers tomorrow night. I believe they use a dynoJet dyno.
423 whp @ 6250 rpm
390 ft/lbs Tq @ 4700 rpm.
My goal was to pack as much Tq between 2500 rpm and 5000 rpm as possible. He said I gained across the full power curve, 2000 rpm to 6000 rpm, I just don't know where and how much.
I'm like a kid going to bed on Christmas eve
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Old 11-09-2017, 02:00 AM   #25
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Here are the Cam Motion Titan 3 Cam results



It is worth noting that the base line was done under slightly different conditions. Also, the engine was missing slightly and the tune running rich. Once the valve train was opened up, we found 5 broken inner springs ( of the dual springs installed) and 1 of the outer springs broken. I'm not sure how the engine had not already gernaded. So, all the gains may not be attributable to the cam change.



Cam Motion Titan 3 Max HP, 423 @ 6250 rpm______________ Vengeance VXR5 max HP 425 @ 6425 rpm



Last edited by Bossdog; 11-09-2017 at 03:36 AM.
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Old 11-09-2017, 10:32 AM   #26
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Here are the Cam Motion Titan 3 Cam results



It is worth noting that the base line was done under slightly different conditions. Also, the engine was missing slightly and the tune running rich. Once the valve train was opened up, we found 5 broken inner springs ( of the dual springs installed) and 1 of the outer springs broken. I'm not sure how the engine had not already gernaded. So, all the gains may not be attributable to the cam change.



Cam Motion Titan 3 Max HP, 423 @ 6250 rpm______________ Vengeance VXR5 max HP 425 @ 6425 rpm


Looks like a nice healthy combo! Thank you for the business!
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Old 11-27-2017, 12:08 AM   #27
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Thanks for posting your results. It's looking more and more like what I want to use will be something in the 218 to 220 degree range (similar to the Titan 1 that was suggested). I'm looking for a very linear torque curve and my goal (380-400) is similar/not much more than what people seem to obtain with a C5 Z06 and bolt-ons (I have kooks 1-7/8" LTs on the way and will be picking up a pair of 243 heads soon).

Last edited by 2001CamaroGuy; 11-27-2017 at 12:11 AM.
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Old 11-27-2017, 09:52 PM   #28
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Originally Posted by 2001CamaroGuy View Post
Thanks for posting your results. It's looking more and more like what I want to use will be something in the 218 to 220 degree range (similar to the Titan 1 that was suggested). I'm looking for a very linear torque curve and my goal (380-400) is similar/not much more than what people seem to obtain with a C5 Z06 and bolt-ons (I have kooks 1-7/8" LTs on the way and will be picking up a pair of 243 heads soon).

I look forward to seeing the Titan 1 curves!
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Old 11-28-2017, 08:11 AM   #29
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By today's standards, Yella Terra rocker arms are junk. They are really heavy and don't provide any benefit over stock rockers with upgraded trunions.
If you have aftermarket heads with bronze guides they provide plenty of benefit and the MOI is pretty low and they are easy to control.
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Old 11-28-2017, 11:22 AM   #30
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If you have aftermarket heads with bronze guides they provide plenty of benefit and the MOI is pretty low and they are easy to control.
Not based on the professional input I have received... to each his own.
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Old 11-28-2017, 01:23 PM   #31
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Not based on the professional input I have received... to each his own.
I have had a respected professional and sponsor recommend them and another against. I am running a set.

Last edited by 93Polo; 11-28-2017 at 01:23 PM.
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