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#1
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Looking for some advise
Hello Everyone,
I'm new to this forum, but very glad to be part of it. I've been looking it over for a few days just trying to get some general information. I've got a 1973 Dodge Dart that I've had since being a kid. I've had it sitting in my garage for the past 15 years or so just waiting until I can get back to it. You know the way it goes. 4 children, no time or money to put into the toy. So now, I'm about ready to get back into it. Question is: Originally, I had a 1970 340 motor in it. It ran great. But I had alot of trouble with turning the crank and rod bearings. Twice, I've had the engine rebuilt at a speed shop and twice, about 10,000 miles, spun bearings. This got me and my wife ticked off so I sold the blown 340 and cut my loses. Now I'm looking for another 340, same here because it has the 275 horses. Can't find one anywhere. I have a 1973 360 that runs. Do you think I can get the power out of that lower compression engine, or do you think I should go on with my search for a 340. Thanks for all your assistance. |
#2
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Stick with the 360 and get a set of flat top pistons for it. Itll raise the compression from the old dished pistons and youll have more useable torque down low where you need it. Finding a 340 will set you back the cost of the pistons plus a whole lot more go fast parts.
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#3
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Thank you Pishta for your input. I thought that would be the better way to go. I don't want to spend a whole lot of money on the rebuild but would like to put on a set of 2.02 heads, maybe a beefier than stock cam, headers, and a 650 cfm carb. Would I have to modify at all for those bigger heads?
Thanks again. |
#4
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No modifications needed. Get a set of 308 heads from a 360 van or truck. Theyll flow better than the old 2.02 heads and they are cheap. You can get 2.02 seats and valves for your 1.88 heads and have a machine shop get it all to fit but it'll be more expensive than the 308 heads from a boneyard. A 750 3310 Holley would be cheaper than a 650 and would allow the motor to breath better and the vacuum secondaries would give you the manners needed on the street. You can also use a Thermoquad, they are cheap and flow well in either size, but are a little more difficult to tune because the tuning parts are harder to come by. A Built 360 in a Dart is a sweet combo.
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#5
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Thanks again for all your help my friend. I can't wait to get working on this project.
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#6
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76 Duster 360 was the fastest production car that year...
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#7
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What brand of flat top pistons do you recommend? And what make of Cam and lifters do you suggest?
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#8
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Dont know. Im more into big blocks now. Hughes makes some killer grinds that are made for Mopar from the start. Hypereutectic (?) pistons are very good and cheaper than forged, but alot better than cast. I ruined a 340 with a cheap cast piston, pulled the pin right out of the bottom! KB is very reputable and has many sizes.
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#9
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Keith Black (KB) has pistons ready for you. Also, Federal - Mougal. Both Hyperutecic. I have use the KB pistons in a 360 without problems. The KB107's are zero deck or real real close and provided a big jump in comp. 9.8-1 with the open chambered heads. (72cc)
Select cam based on your intended purpose and cruise RPM. Try a click here @ hughes engines. http://hughesengines.com/ Heads need not modified for use with there smaller cams. But would be a bennifit. If your doing this on the cheap, a good mill of the heads will get the comp. ratio up. |
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