C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Bullet Cam idle

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Old May 14, 2010 | 02:09 PM
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Default Bullet Cam idle

Cold Engine Start up with my recently new custom / my design cam from Bullet 238/242,,,, 293/300

The noise at the beginning is me putting the car in neutral, then the fuel pump, then vrooom

http://www.youtube.com/watch?v=BUqlq...ature=youtu.be

UPDATED LINK, sorry

Last edited by LD85; Jan 20, 2012 at 08:38 AM.
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Old May 14, 2010 | 02:15 PM
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"Gentlemen start your engines"!!
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Old May 14, 2010 | 03:03 PM
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I may be in the minority here,but I think those lumpy cams sound like crap.It reminds me of a car not running properly.Give me a nice smooth idle with tons of power(I know its hard to have both).On the plus side I bet that car rips(is fast) with that cam
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Old May 14, 2010 | 03:30 PM
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I like that sound for an old muscle car, older vette (early c3 or later) or a hot rod. I personally think newer Vettes should sound refined like a modern sports car. Simple answer to keeping a clean sound with mega power in these cars is forced induction. To each his own...just agreeing with the guy above though.

Congrats to the OP on moving forward with your car though. It's always a good day when that happens.
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Old May 14, 2010 | 03:41 PM
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I have both, a lumpy idling C4 and a refined twin turbo C5. The lumpy idle of the C4 just does something to me, I miss it in my C5.
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Old May 14, 2010 | 03:44 PM
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That's the music for my ears. Sounds absolutely great.
What kind of cam/lifters is it? HR or SR?
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Old May 14, 2010 | 03:45 PM
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I guess I'm old school.......I think it sounds awesome! Get you some LD!
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Old May 14, 2010 | 03:57 PM
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That's a pretty long duration cam. Why not more lift? How many cubes and what gears are you running? Sounds mean.
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Old May 14, 2010 | 04:03 PM
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It smooths out once it gets up to temp, then it idles at 925rpm

406 Cubes, 3:42 rear gear

.595 lift

Hyd - Roller
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Old May 14, 2010 | 07:06 PM
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I love it, usually I like the sound of Fords better, but that thing is an unreal sounding vette.
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Old May 14, 2010 | 08:07 PM
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Originally Posted by LD85
It smooths out once it gets up to temp, then it idles at 925rpm

406 Cubes, 3:42 rear gear

.595 lift

Hyd - Roller
Gotcha, I thought those other numbers were referring to lobe lift which would put the cam at .480 with 1.6 rockers. Any dyno or 1/4 mile numbers?
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Old May 14, 2010 | 09:35 PM
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That sounds awesome Larry! Nice combo for that intake. What engine mgmt are you running?
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Old May 14, 2010 | 10:36 PM
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That thing sounds great. "Refined"?? Thats how all the other cars already sound.
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Old May 14, 2010 | 10:57 PM
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Originally Posted by 383vett
Gotcha, I thought those other numbers were referring to lobe lift which would put the cam at .480 with 1.6 rockers. Any dyno or 1/4 mile numbers?
Should have dyno and 1/4 mile in the next 2-4 weeks

Tim, stock 165 ECM with Pcm4Less tune so far


EDIT cam is 112 LS

Last edited by LD85; May 14, 2010 at 11:25 PM. Reason: LS
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Old May 15, 2010 | 12:54 AM
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Sounds good. Thats a good step up from what you had last time. Should run strong. I like a quicker lope idle than that, I ran my cam at around 1000 rpm to give it abit quicker, not as choppy sound but that car does sound pretty mean.

But i guess once it warms up it smooths out. What rpm was it idling at in that vid when cold start?
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Old May 15, 2010 | 06:30 AM
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Originally Posted by Orr89rocz

But i guess once it warms up it smooths out. What rpm was it idling at in that vid when cold start?
It starts up @ 800 then goes to 925,, I will get some video later today at 925 rpm.
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Old May 15, 2010 | 06:49 AM
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I like the cam specs, it is very similar to the one in mine. I tried a few different idle rpm settings until I found what I liked.
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Old May 15, 2010 | 09:08 PM
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Hot Idle

http://www.youtube.com/watch?v=_3A12-Ar3kQ
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Old May 16, 2010 | 03:40 AM
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Now we need to hear the throttle response!
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Old May 16, 2010 | 07:39 AM
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Sounds Great!!! Much more radical then mine..If I want a refined car I'll buy a Honda Accord..This is a Muscle Car!!!.Yea Baby...I can't wait to get Mick (mseven) started on my tuning so I can see what mine will do...WW

Last edited by WW7; May 16, 2010 at 07:45 AM.
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