Compstar CCW Crank
Thread Starter
Joined: Aug 2004
Posts: 11,258
Likes: 146
From: Pace, FL
Compstar CCW Crank I'm looking at the Dart CCW crank and Compstar's CCW crank.
The Dart seems to be doing very well, but it's priced quite a bit more than the Compstar.
I'm wondering if anyone has any real-world data or usage with the Compstar Crank. Is it vibration free? I thought I heard it was clocked differently than the Dart crank and had some issues there, but I can't remember where I heard that.
Looking to use it with a Dart SHP Block in a 427 with a 4" throw for a 7500 RPM or so operating range.
The Dart seems to be doing very well, but it's priced quite a bit more than the Compstar.
I'm wondering if anyone has any real-world data or usage with the Compstar Crank. Is it vibration free? I thought I heard it was clocked differently than the Dart crank and had some issues there, but I can't remember where I heard that.
Looking to use it with a Dart SHP Block in a 427 with a 4" throw for a 7500 RPM or so operating range.
https://www.yellowbullet.com/forum/s...=2585437&=1
This thread had some good info in it. I am going either cut down stock LS7 crank or the Compstar CCW in my next motor.
This thread had some good info in it. I am going either cut down stock LS7 crank or the Compstar CCW in my next motor.
How much HP are you trying to make? n/a?
A Molnar crank is good for 1500hp+ ..... I made 1200rwhp on a stock LS cast crank turbo motor for 3 years spinning it to 7500+rpm with cheap Compstar rods.
I built a 441 (4.190" bore) with an LS7 crank/rods to spin to 7500-8000rpm as a road race motor n/a... have yet to run it....but don't expect issues aside from basic rebuilds.
A Molnar crank is good for 1500hp+ ..... I made 1200rwhp on a stock LS cast crank turbo motor for 3 years spinning it to 7500+rpm with cheap Compstar rods.
I built a 441 (4.190" bore) with an LS7 crank/rods to spin to 7500-8000rpm as a road race motor n/a... have yet to run it....but don't expect issues aside from basic rebuilds.
Thread Starter
Joined: Aug 2004
Posts: 11,258
Likes: 146
From: Pace, FL
750-800 or so NA. Want to be able to spin to 7800-8000 at the most but looking at 7500+ more in general. My cam isn't that large for a 4" stroke. So, I'll have to see how it does. Have a FAST Med Runner for now but may move to a TSP Billet or LOD intake eventually.
I have looked at Molnar a lot, but I like the idea of not having a flexing crank at high RPM to keep it together for a bit longer. I'm always winding it up down the backroads around here.
But that link is helpful!
I have looked at Molnar a lot, but I like the idea of not having a flexing crank at high RPM to keep it together for a bit longer. I'm always winding it up down the backroads around here.
But that link is helpful!
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I was wondering if you knew the weight difference with the extra counterweights. I have my 438 all together with the compstar ccw, but never weighed it. I'm sure its negligible, but just curious
Staging Lane
Joined: May 2017
Posts: 68
Likes: 0
Running this crank in the same block you mentioned above. I run it up to 7500 without issues on my turbo 427. Not sure on the power it made, but i pushed it to 27# and it seemed fine to me...
I'm looking at the Dart CCW crank and Compstar's CCW crank.
The Dart seems to be doing very well, but it's priced quite a bit more than the Compstar.
I'm wondering if anyone has any real-world data or usage with the Compstar Crank. Is it vibration free? I thought I heard it was clocked differently than the Dart crank and had some issues there, but I can't remember where I heard that.
Looking to use it with a Dart SHP Block in a 427 with a 4" throw for a 7500 RPM or so operating range.
The Dart seems to be doing very well, but it's priced quite a bit more than the Compstar.
I'm wondering if anyone has any real-world data or usage with the Compstar Crank. Is it vibration free? I thought I heard it was clocked differently than the Dart crank and had some issues there, but I can't remember where I heard that.
Looking to use it with a Dart SHP Block in a 427 with a 4" throw for a 7500 RPM or so operating range.