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Promaxx 320 flow numbers

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Promaxx 320 flow numbers

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Old 01-12-2017, 11:27 PM
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Originally Posted by Rookie View Post
I don't think you need to be worried about the quality of the castings. Jim and I spent a good half hour talking things over with Jason at ProMaxx at PRI. Jim fondled them for a bit also, he thought they looked pretty good for the $$$. There is a marine builder that has been using them for a couple of years with no issues. From their published flow #'s there might not be much work to do to them, but you never know. I stopped by after work today and I see he has a lot of new heads there to compare out of the box #'s to. New World Merlin, EQ320's, Dart 345's, Brodix SR-20's (F'n Huge!), some new Wieand tunnel rams and an Edelbrock single for the SR-20's. I'll stop by over the weekend and hopefully take a peak at your heads.
Rookie they showed up at Jims house rather than shop but he did a quick inspection and he said the runner looked a bit biggger then advertised. Regardless you'll probably see them before I so just keep me posted.
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Old 01-13-2017, 07:26 AM
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How come this thread doesn't have 5 more pages each time I look?
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Old 01-13-2017, 08:06 AM
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Are these the cast or aluminum heads
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Old 01-13-2017, 08:13 AM
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Originally Posted by Unlimited jd View Post
How come this thread doesn't have 5 more pages each time I look?
Let me fix that for ya....:

Call Bob Madera.

Ok, that should do it.
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Old 01-13-2017, 08:56 AM
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Originally Posted by 33outlawsst View Post
Are these the cast or aluminum heads
The promaxx are aluminum.
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Old 01-13-2017, 09:10 AM
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Originally Posted by 33outlawsst View Post
Are these the cast or aluminum heads
both,,cast aluminum.
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Old 01-13-2017, 09:11 AM
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Originally Posted by Unlimited jd View Post
How come this thread doesn't have 5 more pages each time I look?
too many reasons to list,,but if we did,,it'd hit 5 pages quickly.
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Old 01-13-2017, 01:27 PM
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call Bob Madera marine kinetics do the phone date for like forever / does not want any money , also no parts , the important part / just where ole bob when we need him ??
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Old 01-13-2017, 02:59 PM
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Jim said casting looked great. He did a quick flow out of the box with a 2.25 intake and was 382. Exhaust was 250. Both were flowed at .700.
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Old 01-13-2017, 04:01 PM
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Forgot to mention the exhaust was all done @ .600 but that's going to change drastically.
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