360 Magnum - Moparchat

pcrmike · #1 10-12-2008, 10:42 PM

I am prepping to build a 360 Magnum for my 99 Dak. I may kep a stock stroke for sake of the NV3500 tranny. If it would handle it, I would drop a 4.00 into it. My question is, with polished chambers, and mild porting, what sort of comp would be likely if I went zero deck flatties and a MLS head gasket. :-) PCRMike

rumblefish360 · #2 10-13-2008, 10:37 PM

The polished chambers (And/or piston tops as well) will reduce the detonation but I would not exceed a reasonable limt and treat the combo as if I didn't. Your likely to run into octane issues (Not enuff) first before anything else.

(Of course a bigger cam can help out a bit.

)

pcrmike · #3 10-14-2008, 03:36 PM

Thanks Rumble! :-) PCRmike

JVMopar · #4 10-15-2008, 07:33 PM

If memory serves me correctly. (which I may be wrong) but magnum motors were zero deck and had 9:1 compression.

pcrmike · #5 10-15-2008, 08:23 PM

They were dished though, and I think they are down in the hole .060, wren't they? :-) PCRMike

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