'04 coupe 3.7l swap
Join Date: Dec 2006
Location: Murfreesboro, TN
Age: 39
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Re: 04 coupe 3.7l swap
HP/TQ rating for the 3.7 is 245/254, respectively (compared to 218/232 in the 3.2).
I would hazard a guess that all NW intakes, headers, etc would bolt up as well. It's just a longer stroke.
Join Date: Dec 2006
Location: Murfreesboro, TN
Age: 39
Posts: 6,348
Likes: 0
Received 10 Likes
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10 Posts
Join Date: Dec 2006
Location: Murfreesboro, TN
Age: 39
Posts: 6,348
Likes: 0
Received 10 Likes
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10 Posts
Re: 04 coupe 3.7l swap
I think the most you can go on stock N/A internals is around ~7 PSI, based on my recollections from the MB forums.
Before I would go through the trouble of swapping a 3.7 and force-feeding it, I would pay someone to do a 550 V8 conversion.
Join Date: Dec 2006
Location: Murfreesboro, TN
Age: 39
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Re: 04 coupe 3.7l swap
55K = Supercharged V8, between 469 and 490 hp depending on donor vehicle (SL was more than E55, for example).
Re: '04 coupe 3.7l swap
Any updates? By swapping the harness... does that mean you had to splice it and adapt it or it's a straight swap? Did you weight the car before and after? Did you have to do any tunning? Where are you located? I don't think we have this engine in North America but I would be interested in importing it.
Re: '04 coupe 3.7l swap
Any updates? By swapping the harness... does that mean you had to splice it and adapt it or it's a straight swap? Did you weight the car before and after? Did you have to do any tunning? Where are you located? I don't think we have this engine in North America but I would be interested in importing it.
Re: '04 coupe 3.7l swap
Ok. It seems like the ML350 would be the vehicle to have this engine. These engines are very cheap at the junk yard. Like 500 to 700 bucks!
Re: '04 coupe 3.7l swap
if the coding could be done at a resonabe price I sure several ppl would be sending off the computer to be coded to a 5.0 or 5.4 m113.
hell if coding was at a descent price I would already have a 5.0 in front of my 6 spd....
Re: '04 coupe 3.7l swap
as long as it is a m112 engine, the m113 that is the v8 that have been swapped is the same engine family.
if the coding could be done at a resonabe price I sure several ppl would be sending off the computer to be coded to a 5.0 or 5.4 m113.
hell if coding was at a descent price I would already have a 5.0 in front of my 6 spd....
if the coding could be done at a resonabe price I sure several ppl would be sending off the computer to be coded to a 5.0 or 5.4 m113.
hell if coding was at a descent price I would already have a 5.0 in front of my 6 spd....
Re: '04 coupe 3.7l swap
not much difference both being full aluminum blocks and heads vs other cast iron engines.
Re: '04 coupe 3.7l swap
It's longer and has more internals. It definitely puts a bit more weight at the front. I don't know if it's really significant but still. The 3.7 swap seems really cheap and straight forward. I also own a 6 speed manual so no hassle with the ecu needed.
Last edited by alexdc; 12-19-2017 at 03:35 PM.