Offshoreonly.com - IMCO Power Flow or CMI Sport Tube

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - IMCO Power Flow or CMI Sport Tube (https://www.offshoreonly.com/forums/general-q/245197-imco-power-flow-cmi-sport-tube.html)

GPM	01-08-2011 11:09 AM

Procharger, 15 psi, I like it alot, big bore flows well, revs nice with the right rod, makes great power, but, it's easy to pop gaskets between cylinders if the tune is not right.

campionchase910

01-08-2011 02:03 PM

15psi wicked, are you using cometic head gaskets and arp head bolts? This may help with the gasket issue.

GPM	01-08-2011 03:50 PM

Tried Cometic and Felpro MLS, ARP pro series studs, mainly tuning issues. Thanks

JimV	01-11-2011 08:34 AM

Quote:

Originally Posted by northernoffshore (Post 3291777)

thanks for the great head work on my small blocks .( It was ten years by now)

That brought a chuckle. Thanks!!

JimV	01-11-2011 09:50 AM

Quote:

Originally Posted by campionchase910 (Post 3291410)

thanks guys,so the I should keep the IMCO's on. I have the CMI's also

If I had the choice I would go with the CMI's. The IMCO's have siamesed runners where as there are three primary runners going into the somewhat small collector. The CMI's have four individual runners exiting into the collector.

campionchase910

01-11-2011 09:55 AM

CMI's it will be!:ernaehrung004:

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