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Re: piston for magnum head
[Re: wagmytale]
#856654
11/18/10 09:48 AM
11/18/10 09:48 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Hello Kyle. Perfectly logical Q. Yes KB's and you would need to mockup/measure for how much to have the flat quench pads milled to get the desired .035"-.040" piston to head clearance & w .035" your measuring needs to be dead on incl piston rock (having the pistons squared up in the bore when you measure). .040" is safe and after .045 you start to lose the benefit. Closed chambers I'm assuming. It'll be worth it whhen your done.
live every 24 hour block of time like it's your last day on earth
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Re: piston for magnum head
[Re: 5spdcuda]
#856656
11/18/10 03:16 PM
11/18/10 03:16 PM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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what motor? 360? there's a number of people running flat top KB107's with a .039" head gasket and OEM magnum heads. works out to ~10.6:1. Most are running a comp XE268 sized cam (268adv, 224@.050, 110LSA, 106 ICL) and run fine on 89+ octane gas.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: piston for magnum head
[Re: patrick]
#856657
11/18/10 09:25 PM
11/18/10 09:25 PM
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Joined: Jul 2003
Posts: 6,167 Maryland
GO_Fish
master
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master
Joined: Jul 2003
Posts: 6,167
Maryland
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I don't have any part numbers to recommend, but a Magnum style piston would have a quench pad to match the closed chamber Magnum head, and it would still have a partial dish. If they were zero decked, in theory that may get your compression around 9.5 or 10 and maybe run on 87?
Scott B.
"I'm a self-made man... I started with nothing, and I still have most of it!"
68 360 rusty B'cuda 'vert (GO Fish)13.59@ 98.72 mph
69 340 GTS stock 14.18@ 95.60 mph
01 5.9L Ram 1500 Quad Cab 4x4
01 3.5L 300M 16.23@ 86.97 mph
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Re: piston for magnum head
[Re: wagmytale]
#856658
11/18/10 10:09 PM
11/18/10 10:09 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
top fuel
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top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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Last night I installed KBs 362 (I think that's the number) in my 360 Magnum. The decks have been milled around .012" to true them up. After installation the flat dome of the piston was .017" above deck. With a .052" head gasket I will Be right at .035" quench height. I am building a strictly street engine that will rarely, if ever, see 6000 rpm. I plan on running RHS heads.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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