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360 teardown #835034 10/20/10 10:02 PM 10/20/10 10:02 PM
Joined: Aug 2007 Posts: 228 Myrtle Beach Boot OP enthusiast
Boot OP enthusiast Joined: Aug 2007 Posts: 228 Myrtle Beach	Just got my 360 torn down. Looks like some rather severe scores in the cylinders. I noticed some minor scoring on the bearings as well. This is the first bottom end I've done. Obviously I'm replacing the bearings and having the cylinders bored. Since I'm rebuilding it anyway, could someone suggest a piston/ring combo that'll help me on my way to around 300 HP? Looks like the bone stock mid 70s 360 only made around 155 HP. I don't mind spending the money, since it'll come a step at a time. I realize the top end makes more or a difference than the bottom end, I'll get to that as money allows. 47 chopped Plymouth Sedan 340/727

Re: 360 teardown [Re: Boot] #835035 10/20/10 10:52 PM 10/20/10 10:52 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	you would want to select the octane your going to run (pump gas I'm assuming)along w a stock cam? I'd select one of KB's hypereutectic pistons that'll give you a CR of ~ 9.5:1 along with some regular garden variety single moly rings (low tension/file fit not needed or wanted in your case) live every 24 hour block of time like it's your last day on earth

Re: 360 teardown [Re: RapidRobert] #835036 10/21/10 12:24 AM 10/21/10 12:24 AM
Joined: Aug 2007 Posts: 228 Myrtle Beach Boot OP enthusiast
Boot OP enthusiast Joined: Aug 2007 Posts: 228 Myrtle Beach	I've always run Premium pump gas anyway, in everything I own. I have an Edelbrock Performer RPM intake coupled with a 1406 600 cfm carb. I'm thinking about the Mopar cam with 260/268 duration and .430/.450 lift. I'll figure out what heads I'm going with after I do a bit more research on different ones. 47 chopped Plymouth Sedan 340/727

Re: 360 teardown [Re: Boot] #835037 10/21/10 12:30 AM 10/21/10 12:30 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Also check the price/dimentions of speed pro 1166 and H405cp pistons. I assumed you were going to rebuild the OE open chambered heads. If going aftermarket I'd for sure step up to magnums (closed chambers) & get .040" quench. It'd let you run a higher CR on the exact same octane & have an maximum efficient long block w nothing left on the table live every 24 hour block of time like it's your last day on earth

Re: 360 teardown [Re: RapidRobert] #835038 10/21/10 08:46 AM 10/21/10 08:46 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Hopefully you take your crankshaft in to have checked and resurfaced too.

Re: 360 teardown [Re: MoparforLife] #835039 10/21/10 10:34 AM 10/21/10 10:34 AM
Joined: Jan 2003 Posts: 16,123 Grand Haven, MI patrick I Live Here
patrick I Live Here Joined: Jan 2003 Posts: 16,123 Grand Haven, MI	dump the mopar cam. get a comp XE268, and some KB107's set up at 0 deck.... will work fine on pump premium with stock LA heads (will net ~9.5:1 compression) or edelbrocks, or magnum heads (~10.6:1 compression, but tight quench) although with this setup, you'll be closer to 350-360HP than 300.... stock replacement pistons, a comp XE256 or XE262 (or comparable lunati voodoo), and headers will get you past your 300HP goal on 87 octane..... Last edited by patrick; 10/21/10 10:36 AM. 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)

Re: 360 teardown [Re: RapidRobert] #835040 10/21/10 11:28 AM 10/21/10 11:28 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: you would want to select the octane your going to run (pump gas I'm assuming)along w a stock cam? I'd select one of KB's hypereutectic pistons that'll give you a CR of ~ 9.5:1 along with some regular garden variety single moly rings (low tension/file fit not needed or wanted in your case) Hughes web sight might be a good starting place for you. Lots of combo's to look at. Fastest 300

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