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11:54:48 - 03/12/2025
Dakota Performance
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mcarthey
Dodge Dakota
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7/12/2004
10:01:30
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 Subject: 5.2L port/polish intake?
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I'm considering checking around for prices on doing some intake work. I'm just curious if anyone has had their intake manifold worked on and what kind of improvements you saw. Was the flow bench data provided to you? What did it indicate?
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Sneezer
Dodge Dakota
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7/12/2004
17:55:55
| RE: 5.2L port/polish intake?
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I have seen posts from several people who have polished and ported the stock BB intake. I don't think anyone actually had it flow tested though. The overall consensus is that a ported intake will increase your low end, but does little in the higher RPM ranges. The M1 intake results in some loss in the low end, but a large increase above 3000 rpm.
I put the M1 on my truck, and may port my old BB just to experiment. However, I prefer the M1 for looks, ease of maintenance around the intake, and elimination of the belly pan gasket problem. Although it did feel like I lost a little on the low end, the rush at highway speeds is quite addicting, and the truck actually runs smoother now than before.
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mcarthey
Dodge Dakota
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7/12/2004
18:51:22
| RE: 5.2L port/polish intake?
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I am trying to keep my low end since I use it a lot for towing. I rarely hit 4500rpm which is why I'm considering the port/polish route. I was just thinking of efficiency and wondering what kinds of gains I could expect and how much it would cost.
Thanks!
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IntenseDak39
*GenIII*
7/13/2004
04:11:40
| RE: 5.2L port/polish intake?
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I've done several manifolds for V6's... all with happy results. I dont have any flow bench time but for what i charge to do the work, you could probably understand why i dont.
I have several pix of some of the work i do on the V6 board, and i'll look for em so i can show you but here is what i charge;
V8 manifold - shorten runners, radius injector bosses - $100*
above, but gasket match ports - $125*
* if there is a divider to remove, $25 more
now these prices are if you send me a manifold to work on. If i have to provide it, it would be $50 more... but i could send you $50 back after you send me your stock one (after the swap).
6.6 Lt. Big Block, 727 TF shift kit, 452 heads, edelbrock 750 cfm, .513/.513 284/300 crower cam, comp cams springs, comp cams pushrods, 1.5 roller rockers, dp intake, mopar ignition, mopar windage tray, dual exhaust w/ 40 series flowmasters, 4.10 gears, coilover drag suspension, approx, 3500 lbs
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mcarthey
Dodge Dakota
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7/14/2004
09:26:20
| RE: 5.2L port/polish intake?
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I'm greatly interested, but I'm curious... without flow data is there a way I can determine an upper level of flow to help match up other parts to it? There has to be some sort of upper limit of TB and valve sizes to match the intake, doesn't there?
Would you necessarily need the manifold right away that I have, or could I keep it for a while to make sure I don't have any problems?
Have you done any others from this board?
I'd love to see those pics. Thanks!
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