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late model hemi swap is it worth it ? #1385919 02/11/13 09:47 PM 02/11/13 09:47 PM
Joined: Dec 2005 Posts: 743 East Brunswick New Jersey N NoFrills OP super stock
NoFrills OP super stock N Joined: Dec 2005 Posts: 743 East Brunswick New Jersey	I am thinking about swapping a 5.7 hemi into my 67 belvedere station wagon. I was wondering if people that have swapped them into older stuff think it was worth it in the end. My car is a running driving 440 auto. I like taking it for rides with my kids but it gets terrible mpg and don't really make that much power. I would want to leave the hemi injected and would put a 518 behind it.

Re: late model hemi swap is it worth it ? [Re: NoFrills] #1385920 02/11/13 11:00 PM 02/11/13 11:00 PM
Joined: May 2005 Posts: 4,703 Florida BDW master
BDW master Joined: May 2005 Posts: 4,703 Florida	Wondering the same thing.

Re: late model hemi swap is it worth it ? [Re: NoFrills] #1385921 02/11/13 11:52 PM 02/11/13 11:52 PM
Joined: Nov 2005 Posts: 15,118 85086 moparpollack Lil Herman
moparpollack Lil Herman Joined: Nov 2005 Posts: 15,118 85086	Quote: I am thinking about swapping a 5.7 hemi into my 67 belvedere station wagon. I was wondering if people that have swapped them into older stuff think it was worth it in the end. My car is a running driving 440 auto. I like taking it for rides with my kids but it gets terrible mpg and don't really make that much power. I would want to leave the hemi injected and would put a 518 behind it. It's a big investment to save gas money. At the end of the day it's still 375 hp for a newer hemi. Case in point where do you drive and how far. On the highway my friends 512 charger got 17mpg on the highway with 3:55 gears 28" tires. In town not so much. My new challenger does 70mph at 1500 ish rpm. It's boring as all get out putting down the highway like this. My main grpe about putting a newer engine in an old car is what happens if you break down? Most parts are custom like the spark controller or any sensor. How do you diagnose this and get back on the road? With old school technology most can get it going with basic hand tools. My buddy drove older cars cross country with points because he knew he could fix them in twenty minutes. Only basic hand tools were all he took. 56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d

Re: late model hemi swap is it worth it ? [Re: moparpollack] #1385922 02/12/13 12:24 AM 02/12/13 12:24 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	You would be cheaper off rebuilding the 440 for a decent mix of power and mileage. If he was to swap in a 5.7 and keep the injection, I'm assuming he would be using a factory computer. In that case the sensors and everything is the same as the donor vehicle it came out of. Reliability not an issue in that case because nothing is really aftermarket. So long as the wiring job is done right, you're fine.

Re: late model hemi swap is it worth it ? [Re: DaytonaTurbo] #1385923 02/12/13 12:58 AM 02/12/13 12:58 AM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	The 3G Hemi is a great engine. I'm on my third (DD). It likes to spin and is easily upgraded for more power with great flowing heads. It likes at least 4 gears... more is better. It will loaf along at low RPM in OD and get good mileage but again, it likes to spin to get up and go. The 440 is a great engine also. With tight quench, good CR, OD and a well tuned carb or EFI it can be reasonably efficient. Its strong point is mid range torque... different animal. Is it worth it? Up to you. I believe the 3G swap is getting easier but not yet "easy" and that's a consideration.

Re: late model hemi swap is it worth it ? [Re: ahy] #1385924 02/12/13 01:02 AM 02/12/13 01:02 AM
Joined: May 2005 Posts: 1,130 Dayton, Ohio W wldtm super stock
wldtm super stock W Joined: May 2005 Posts: 1,130 Dayton, Ohio	Mine gets 25 MPG at 70 mph with 3.91 and 28 tall tire in an A body. Yes, it has a .64 overdrive in the 5 speed. Is is quick as h*ll, no. Can I drive it anywhere, yes. I built it for that reason. Reliability is great, because as mentioned earlier, it has factory efi and the DLC connector. go to any dealership or autozone and get the codes and trouble shoot from their I love it, but would probably get beat in several street races. All up to the end goal of your vehicle. JM Interested in having you car wired? Drag car, street car, EFI swap? PM for details

Re: late model hemi swap is it worth it ? [Re: wldtm] #1385925 02/12/13 06:30 AM 02/12/13 06:30 AM
Joined: Mar 2008 Posts: 685 Bismarck, ND USA C cageman mopar
cageman mopar C Joined: Mar 2008 Posts: 685 Bismarck, ND USA	I would just use the 545 that the hemi came with, thats what I did, easy (either way you have to do floor pan mods). Has a speed signal an auto meter speedo can read, and a tach signal an auto meter tach can also read. I used an 03. If I was to do it over, I would have dumped the 03 computer, which has two, one for the engine and one for the trans for an 05 computer, and put a 500 hp tune on it and away I go. With an 05 you need an adapter for the tach and speedo, but they make em. I guess With the tti's it is supposedly 400 hp, but you touch the key it is running and it idles great and will run for 200,000 miles. Try that with a carb engine, ha ha, yeah right. I can hook the scanner up to it and see what is going on, that too is nice. I used a hotwire wire harness, Chris was very helpful, will use him again. Right now Im finishing up the stainless fuel tank I made, it is turning out sweet, I used the rams fuel pump, so it was designed for this engine.

Re: late model hemi swap is it worth it ? [Re: cageman] #1385926 02/12/13 06:46 PM 02/12/13 06:46 PM
Joined: Dec 2005 Posts: 743 East Brunswick New Jersey N NoFrills OP super stock
NoFrills OP super stock N Joined: Dec 2005 Posts: 743 East Brunswick New Jersey	I can get a good deal on a new 5.7 truck motor and a frend has a fast xfi that he never used that I can get for cheep. Really I would like to put a t56 in in but I have a fresh non lock up 518 laying around. The 440 is ok was suposed to be fresh when I got it. If never really impressed me stock cam 915 heads. It will detinate with out 93 octane gas and im lucky if it gets 10 mpg even on the high way. I think it will end up costing me around 4500 to do the swap with me doing the labor. I also realize 4500 will buy alot of gas for the 440.

Re: late model hemi swap is it worth it ? [Re: NoFrills] #1385927 02/12/13 10:52 PM 02/12/13 10:52 PM
Joined: Mar 2008 Posts: 685 Bismarck, ND USA C cageman mopar
cageman mopar C Joined: Mar 2008 Posts: 685 Bismarck, ND USA	I have a thousand into the wiring, I used the stock fuel pump, made my own stainless tank, all the fittings and what not, I'll have 5 grand into it easy. But I also rewired the whole car, new aluminum radiator, put the ac delete pulley on it, made my own driveshaft, All new auto meter guages and all the little stuff. But it starts with a simple turn of the key and it idles perfectly. Cant beat the oem engineeering. All the hotwire wires clip right together, it took me ten minutes to wire that part. Todays gas and carbs dont mix. Fuel injection is the only option it seems.

Re: late model hemi swap is it worth it ? [Re: NoFrills] #1385928 02/13/13 02:38 AM 02/13/13 02:38 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	Quote: I can get a good deal on a new 5.7 truck motor and a frend has a fast xfi that he never used that I can get for cheep. Really I would like to put a t56 in in but I have a fresh non lock up 518 laying around. The 440 is ok was suposed to be fresh when I got it. If never really impressed me stock cam 915 heads. It will detinate with out 93 octane gas and im lucky if it gets 10 mpg even on the high way. I think it will end up costing me around 4500 to do the swap with me doing the labor. I also realize 4500 will buy alot of gas for the 440. Something is big time wrong with your 440 if a "fresh" 440 with a stock cam is only getting 10mpg. With a fresh 440 with decent compression pistons and a stock cam and 727 with some granny highway gears in the rear you should be knocking down mid-upper teens even in a station wagon that's no doubt heavier than a regular b body. Did you take the time to jet your carb properly and tune your distributor advance (initial, total and vacuum)?

Re: late model hemi swap is it worth it ? [Re: DaytonaTurbo] #1385929 02/13/13 02:46 AM 02/13/13 02:46 AM
Joined: Jul 2005 Posts: 11,632 SHELBY TWP,,MICHIGAN 72N96RR I LOVE WEDGIES
72N96RR I LOVE WEDGIES Joined: Jul 2005 Posts: 11,632 SHELBY TWP,,MICHIGAN	The last two issues of Mopar Action magazine has gone into great detail about putting a 6.1 HEMI in old school muscle..They are now convinced after dynoing a solid 750 hp motor that produced 600FT lbs of torque,, that this motor is the end all best hemi setup (OLD OR NEW) available today as far as a pump gas motor with little to no maintenance.. 1972 Road Runner / GTX 440 4spd Dana 3.54 Just about to turn 26K original miles.. A boat, a GMC truck, some Craftsman Tools, LOTS of Zombie Protection, and a few Goldfish.. If you love someone set them free.. If they come back it means nobody else wanted them either..!!

Re: late model hemi swap is it worth it ? [Re: 72N96RR] #1385930 02/13/13 02:59 AM 02/13/13 02:59 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	That 750hp 6.1 would be super cool, but that could NOT have come cheap!

Re: late model hemi swap is it worth it ? [Re: DaytonaTurbo] #1385931 02/13/13 03:12 AM 02/13/13 03:12 AM
Joined: Jun 2005 Posts: 4,442 Texas D Daty Rogers World's Greatest Husband. I love you Robyn
Daty Rogers World's Greatest Husband. I love you Robyn D Joined: Jun 2005 Posts: 4,442 Texas	Not only yes but heck yeah! Weighs as much as a slanty, and the weight is further back and down because of the smallness of the motor. https://board.moparts.org/ubbthreads/favl...amp;postmarker= is my thread on the install. -Daty

Re: late model hemi swap is it worth it ? [Re: NoFrills] #1385932 02/13/13 10:25 AM 02/13/13 10:25 AM
Joined: Jan 2013 Posts: 167 maryland 7 74yellowduster member
74yellowduster member 7 Joined: Jan 2013 Posts: 167 maryland	Quote: It will detinate with out 93 octane gas and im lucky if it gets 10 mpg even on the high way. displacement and "type of ignition" "type of injection" have far less to do with mpg than the following: weight of the vehicle (heavy = more gas) torque converter (old type that doesnt lock up = your gas goes down the drain) so a heavy station wagon with a non-lockup converter, even with a 318 is going to get crap mileage. you need a manual trans or a lockup converter. a manual trans w/overdrive or automatic with lockup & overdrive will do a lot for you. spending $1000's on special stuff to put in a modern hemi is kind of going in the wrong direction to fix the problem. Last edited by 74yellowduster; 02/13/13 10:26 AM.

Re: late model hemi swap is it worth it ? [Re: 74yellowduster] #1385933 02/13/13 08:09 PM 02/13/13 08:09 PM
Joined: Apr 2007 Posts: 2,914 Calgary, Alberta Canada a12rag master
a12rag master Joined: Apr 2007 Posts: 2,914 Calgary, Alberta Canada	In all my C bodies that I had 440's in, I would get 16mpg all day on the highway - from 60mph - 80mph ! Didn't seem to care . . . I think you should revisit the tuning of the 440 and see what you can do there . . . just my two cents . . . Cheers Mark

Re: late model hemi swap is it worth it ? [Re: a12rag] #1385934 02/13/13 09:32 PM 02/13/13 09:32 PM
Joined: Aug 2003 Posts: 8,779 Mt.Gilead, Ohio OhioMopar master
OhioMopar master Joined: Aug 2003 Posts: 8,779 Mt.Gilead, Ohio	Inject the 440 and put that 518 behind it. Would be less work and expense, wouldn't it? Will the XFI system you can get cheap be made to work for the 440? 1969 Dart GTS 340 1969 Super Bee X9 N-96 1969 Coronet R/T X9 N-96 2015 Dodge Dart GT 2019 Ram 2500 Big Horn. Looking for the original block for my Bee. The last 4 are 7449

Re: late model hemi swap is it worth it ? [Re: OhioMopar] #1385935 02/13/13 10:59 PM 02/13/13 10:59 PM
Joined: Dec 2005 Posts: 743 East Brunswick New Jersey N NoFrills OP super stock
NoFrills OP super stock N Joined: Dec 2005 Posts: 743 East Brunswick New Jersey	I actually have a older holey projection set up the the wagon was suposed to get on the 440 but I never made it that far

Re: late model hemi swap is it worth it ? [Re: NoFrills] #1385936 02/14/13 12:53 AM 02/14/13 12:53 AM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	How old? I've heard some horror stories about the holley projection kits.

Re: late model hemi swap is it worth it ? [Re: cageman] #1385937 02/14/13 01:16 AM 02/14/13 01:16 AM
Joined: Nov 2005 Posts: 15,118 85086 moparpollack Lil Herman
moparpollack Lil Herman Joined: Nov 2005 Posts: 15,118 85086	Quote: I have a thousand into the wiring, I used the stock fuel pump, made my own stainless tank, all the fittings and what not, I'll have 5 grand into it easy. But I also rewired the whole car, new aluminum radiator, put the ac delete pulley on it, made my own driveshaft, All new auto meter guages and all the little stuff. But it starts with a simple turn of the key and it idles perfectly. Cant beat the oem engineeering. All the hotwire wires clip right together, it took me ten minutes to wire that part. Todays gas and carbs dont mix. Fuel injection is the only option it seems. Any pictures? 56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d

Re: late model hemi swap is it worth it ? [Re: moparpollack] #1385938 02/14/13 10:22 AM 02/14/13 10:22 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	considering my 4200 lb 2011 charger R/T is a ~13.7 second ride in the quarter mile with the A580 auto and 2.65 rear gears, I'd love to take a bone stock 2009-up 5.7 eagle motor and put it in my duster with it's current gearing of an A833OD and 3.23's....would easily be a 12 second car, that on the highway would get about 27-28mpg.... 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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