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KBR-190's in 360 pump gas? #694538
05/10/10 10:17 PM
05/10/10 10:17 PM
Joined: Sep 2003
Posts: 654
Lexington,VA
6
68gtxsurvivor Offline OP
mopar
68gtxsurvivor  Offline OP
mopar
6

Joined: Sep 2003
Posts: 654
Lexington,VA
Im building a 360 for my 79 Macho, wanting to make a good torque motor since its going to be a 4x4. I was thinking of the KBR-190's which have the 1.2cc dome on the open chamber side of the cylinder. Block isn't decked and head is milled .010 1008 headgasket. Im going to port and polish a set of open chamber 360 heads and put in 2.02 1.60 valves. Get a cam ground for my application and run a dual plane intake and headers. Do you all think it will run no problem on 93 octane?

Re: KBR-190's in 360 pump gas? [Re: 68gtxsurvivor] #694539
05/11/10 06:52 AM
05/11/10 06:52 AM
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick Offline
I Live Here
patrick  Offline
I Live Here

Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
Quote:

Im building a 360 for my 79 Macho, wanting to make a good torque motor since its going to be a 4x4. I was thinking of the KBR-190's which have the 1.2cc dome on the open chamber side of the cylinder. Block isn't decked and head is milled .010 1008 headgasket. Im going to port and polish a set of open chamber 360 heads and put in 2.02 1.60 valves. Get a cam ground for my application and run a dual plane intake and headers. Do you all think it will run no problem on 93 octane?




good luck with that....with the open chambers and no quench, I am not so sure....

although there have been others on the board with A bodies that have done 360's with KB107's at 0 deck, .039" head gaskets, and 63cc magnum heads (works out to ~10.6:1) that can run 89-92 octane with a comp XE268. the tight quench helps a lot in detonation resistance. the other piece of the puzzle is you intake closing point which will determine max cyl pressure. your combo might run on pump gas with say, a comp 292 cam, but not with an XE262....


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