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NEW DIRECTION IN THE 318 BUILD!Getting a 360
#280802
04/07/09 08:00 PM
04/07/09 08:00 PM
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Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
erick72
OP
mopar
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OP
mopar
Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
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well as they say theres no replacement for displacment. well i found a 360 way on the other side of the state and the guy said he would drop it off to me for a grand total including the engine for 175 bucks. did i do good?its a 77 model year 360 out of a cordoba or something. im getting it next friday after this one coming up. so now that im getting a 360 what is a good combo. im getting some magnum heads drilled for an la intake and there milled 30 over and ported a little also. then of course headers,4 barrel carb,4 barrel intake,new cam. what do you think ill be pushing out with this combo? am in the right direction to a good street car or no? thank you guys at moparts.dont know what id do without MOPARTS 
Last edited by erick72; 04/07/09 08:01 PM.
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: myidwastook]
#280804
04/07/09 08:12 PM
04/07/09 08:12 PM
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Joined: Jun 2006
Posts: 5,164
CT
GTX MATT
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master
Joined: Jun 2006
Posts: 5,164
CT
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1000 for a 360 seems a bit steep, is it rebuilt?
It will be a low compression engine if its not, but still a better starting point than the 318. Youd probably be better off to spend money upping the compression than on the Magnum heads depending on how much they cost, the 360 heads flow decently. If you can get 9:1 compression, with headers, aftermarket intake and 650 carb, and a Comp XE268 350 horse would be no problem.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: GTX MATT]
#280806
04/07/09 08:17 PM
04/07/09 08:17 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
1000 for a 360 seems a bit steep, is it rebuilt?
where did that number come from??? He said $175.00 delivered where I read it. 
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: GTX MATT]
#280807
04/07/09 08:19 PM
04/07/09 08:19 PM
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Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
erick72
OP
mopar
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OP
mopar
Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
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Quote:
1000 for a 360 seems a bit steep, is it rebuilt?
It will be a low compression engine if its not, but still a better starting point than the 318. Youd probably be better off to spend money upping the compression than on the Magnum heads depending on how much they cost, the 360 heads flow decently. If you can get 9:1 compression, with headers, aftermarket intake and 650 carb, and a Comp XE268 350 horse would be no problem.
yep 175 bucks
and so the 250 bucks i am spending on these magnum heads isnt worth it?
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: erick72]
#280810
04/07/09 08:30 PM
04/07/09 08:30 PM
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Joined: Sep 2007
Posts: 5,037
hi
sharpie
Moparts Linguist
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Moparts Linguist
Joined: Sep 2007
Posts: 5,037
hi
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the thing about Magnum heads is, if they're stock and don't have hardened valve seats, they're almost sure to have cracks. Small cracks aren't usually an issue mechanically, but why pay $250 for a set of heads that could have problems, when you could buy a set of RHS heads for $335.16/ea. The RHS heads have better flow, tighter numbers, dry exhaust bolt holes, and better side casting without freeze plugs. http://www.compperformancegroupstores.co...Code=ChryMagnumThe main point is, if you have to have work done on the stock heads, OOTB RHS heads are just as cheap.
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: sharpie]
#280811
04/07/09 08:43 PM
04/07/09 08:43 PM
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Joined: Jun 2006
Posts: 5,164
CT
GTX MATT
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Posts: 5,164
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Oh ALRIGHT, I thought he said for a grand!
250 isnt too much for the heads. If its a low mileage engine without alot of ridge though you may be better off to knock the ridge off, hone it, and buy some pistons to get the compression up nice and high. It will be in the low 8s or maybe even high 7s most likely.
You gotta draw the line someplace though and the compression wont be much lower than your 318, if you throw the same parts at it as you would the 318 you will probably have 15 horse more and 30 ft lbs of torque more, as well as more torque at low RPM and a flatter torque curve.
Last edited by GTX MATT; 04/07/09 08:48 PM.
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: sharpie]
#280812
04/07/09 08:45 PM
04/07/09 08:45 PM
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Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
erick72
OP
mopar
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OP
mopar
Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
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Quote:
the thing about Magnum heads is, if they're stock and don't have hardened valve seats, they're almost sure to have cracks. Small cracks aren't usually an issue mechanically, but why pay $250 for a set of heads that could have problems, when you could buy a set of RHS heads for $335.16/ea. The RHS heads have better flow, tighter numbers, dry exhaust bolt holes, and better side casting without freeze plugs.
http://www.compperformancegroupstores.co...Code=ChryMagnum
The main point is, if you have to have work done on the stock heads, OOTB RHS heads are just as cheap.
the heads a member has.has no cracks and there at the machine shop now being milled.
they have hardended seats.why wouldnt they.the magnum engine was a 92-03 engine.no lead gas thn.lol
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: GTX MATT]
#280813
04/07/09 08:47 PM
04/07/09 08:47 PM
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Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
erick72
OP
mopar
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OP
mopar
Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
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Quote:
Oh ALRIGHT, I thought he said for a grand!
250 isnt too much for the heads. If its a low mileage engine without alot of ridge though you may be better off to knock the ridge off, hone it, and buy some pistons to get the compression up nice and high. It will be in the low 8s or maybe even high 7s most likely.
wait is it even worth it then?you said before with my 318 combo i could get 9 to 1 compression?
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: erick72]
#280814
04/07/09 08:51 PM
04/07/09 08:51 PM
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Joined: Jun 2006
Posts: 5,164
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,164
CT
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Quote:
Quote:
Oh ALRIGHT, I thought he said for a grand!
250 isnt too much for the heads. If its a low mileage engine without alot of ridge though you may be better off to knock the ridge off, hone it, and buy some pistons to get the compression up nice and high. It will be in the low 8s or maybe even high 7s most likely.
wait is it even worth it then?you said before with my 318 combo i could get 9 to 1 compression?
I said IF YOU could get 9:1 compression. To me the 360 is a better starting point, especially with stock heads because the 360 heads will flow better than your 318 heads (theyre basically 340 heads). If it were my engine Id open it up, if it doesnt have much ridge Id knock the ridge off, put in some KB Hyper pistons to get 9.5:1 compression, and slide in an XE268, RPM intake, 600 or 650 carb, and headers, and you will have more power than a 340 would with the same mods.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: GTX MATT]
#280815
04/07/09 08:59 PM
04/07/09 08:59 PM
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Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
erick72
OP
mopar
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OP
mopar
Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
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Quote:
Quote:
Quote:
Oh ALRIGHT, I thought he said for a grand!
250 isnt too much for the heads. If its a low mileage engine without alot of ridge though you may be better off to knock the ridge off, hone it, and buy some pistons to get the compression up nice and high. It will be in the low 8s or maybe even high 7s most likely.
wait is it even worth it then?you said before with my 318 combo i could get 9 to 1 compression?
I said IF YOU could get 9:1 compression. To me the 360 is a better starting point, especially with stock heads because the 360 heads will flow better than your 318 heads (theyre basically 340 heads). If it were my engine Id open it up, if it doesnt have much ridge Id knock the ridge off, put in some KB Hyper pistons to get 9.5:1 compression, and slide in an XE268, RPM intake, 600 or 650 carb, and headers, and you will have more power than a 340 would with the same mods.
well i plan on keeping the stock bore.and would you have a link to the pistons?
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: GTX MATT]
#280816
04/07/09 09:01 PM
04/07/09 09:01 PM
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Joined: Sep 2007
Posts: 5,037
hi
sharpie
Moparts Linguist
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Moparts Linguist
Joined: Sep 2007
Posts: 5,037
hi
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believe me, the stock magnum seats aren't hard enough. Having seen an entire set of heads wiped, and having done more research than most on magnum combos, I know that new valve seats are necessary. If you already have the heads, great, just be forewarned.
As for compression, you can easily get 9.5:1, which is where I'm at, with new pistons, rings, and a thin head gasket. Just watch out for piston to valve clearance onceyou get close to zero deck.
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: sharpie]
#280817
04/07/09 10:14 PM
04/07/09 10:14 PM
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Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
erick72
OP
mopar
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OP
mopar
Joined: Jul 2008
Posts: 580
Detroit,Michigan USA!
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Quote:
believe me, the stock magnum seats aren't hard enough. Having seen an entire set of heads wiped, and having done more research than most on magnum combos, I know that new valve seats are necessary. If you already have the heads, great, just be forewarned.
As for compression, you can easily get 9.5:1, which is where I'm at, with new pistons, rings, and a thin head gasket. Just watch out for piston to valve clearance onceyou get close to zero deck.
i think i can get at least 350 horse with the combo im doing
1.360 engine all the smog bullsit off.
2.magnum heads,non cracked,milled 30 over ported slightly also.thin head gasket.
3.headers
4.holley street dominator sigle plane alumnium intake,4 barrel 650 cfm carb
5.comp cams 270 magnum cam
6.gm V6 valve springs
thats it.
anything else you guys think would help?
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: erick72]
#280818
04/07/09 10:23 PM
04/07/09 10:23 PM
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Joined: Jan 2003
Posts: 4,323
NY NY
340duster340
master
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master
Joined: Jan 2003
Posts: 4,323
NY NY
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nice score.
keep it simple, good cam, pistons, and factory "J" heads, you'll have more than enough power.
1966 Dart GT
...down to only 1 mopar for the first time in 15 years!
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Re: NEW DIRECTION IN THE 318 BUILD!Getting a 360
[Re: myidwastook]
#280821
04/07/09 10:41 PM
04/07/09 10:41 PM
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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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I'd suggest starting w 360 eng: magnum heads/the right kb pistons/head gaskets to get .035-.040 quench(measure carefully each piston) & your MEASURED CR in the low 10's(preferred CR will need adjusting depending on your cam/fuel selection.
live every 24 hour block of time like it's your last day on earth
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