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  • October 18, 2018, 06:02:23 AM

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Author Topic: Engine swap on a 80 Chevy monza  (Read 1580 times)

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Offline Creepingmonza

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Engine swap on a 80 Chevy monza
« on: August 09, 2015, 03:18:00 AM »
I have a 1980 Chevy monza with a 151 iron Duke under the hood.I'm wanting to swap it for a mercruiser 3.0, prefibly an older one like a 79, but in new condition. Reason is I am dealing with 70-76 hp,and new this block put out 82 hp.40 years ago this was a quick car for mom to put put to the store but now its struggling to keep up.I also have a squal I can't find,I think it's in the crank.maby a spun bearing.not sure.I'm aware the mercruiser will double my hp and sence its the same block with a stroker kit and a super duty crank,it should drop right in and I won't have to mod my suspension like I would with the more popular 350 h body conversion.I need any and all info here.can give it to me here,in me,or email me at creeper0629@gmail. Com.I'm aware the merc was converted for Marine use and I'll need to know how to convert it back.if it helps I have my intake on the passenger side, Rochester verajet 2 carb.not happy with the carb,and would like an upgrade here.thanks

Offline Creepingmonza

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Re: Engine swap on a 80 Chevy monza
« Reply #1 on: August 09, 2015, 07:46:31 AM »
As a note I'm well aware my car is a Chevy,but its engine is relevant to the site,and many here should have knowlage on the engine.

Offline eaglefreek

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Re: Engine swap on a 80 Chevy monza
« Reply #2 on: August 13, 2015, 11:34:49 PM »
I cleaned up the thread to keep it on track. I wish I could help, but I don't know anything about the Iron Duke.
1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
1981 AMC Eagle Wagon As Seen On TV  Lost In Transmission


 

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Offline carnuck

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Re: Engine swap on a 80 Chevy monza
« Reply #3 on: August 29, 2015, 11:16:47 PM »
There are 2 Dukes. Early one has SBC and 4.3L V6 bell pattern. Later one has 60 degree Chev V6 pattern like the 2.8L. Aside from that, they are very different.
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Offline Creepingmonza

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Re: Engine swap on a 80 Chevy monza
« Reply #4 on: September 06, 2015, 08:10:32 AM »
Sorry I been mia for a bit,I was trying to finish a crossbow I am working on for a survival forum that wanted to do a full post on my project.I wasn't aware the Duke was also a six banger.interesting.I'll do research on that

Offline Creepingmonza

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Re: Engine swap on a 80 Chevy monza
« Reply #5 on: September 06, 2015, 08:20:47 AM »
And thanks for taking out the trash on this thread.I'm sorry you had to deal with that.wasn't what I wanted.I still have no leads on the motor,but plans got derailed as some things came up.but I got time to research this further and I hope y'all can help.I'm shooting for the mercruiser 3.0,I think my big challang will be converting it back to automotive use.if it realy is a Duke they slaped a stroker kit in I have no doubt bell housing will match and at most I may have to tweek the engine mount a tad.I'm curious if I get one with more modern intake and fuel systems if I will have to get rid of my mechanical fuel pump.I realy like that thing and would want to keep it.