mercury marquis 390

Engine, ignition, fuel, cooling, exhaust

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elvis67
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mercury marquis 390

Post by elvis67 »

HI guys big question I m rebuilding a 390 v2 that I got from a mercury marquis 69 for my 69 ranger.
I m ordering a full rebuilding kit all stock except for oversize 0.20 piston. now what I heard is the cam is not the same on the car engine as a truck. the car engine having more hp and less torque. the truck I have is axle 17 if Im right it is 3.25 diff now is that ok or it will be too hard on the engine and result in poor gas millage. now would I be better of installing a truck cam in this engine . is that possible ??
or it will interfer with other component push rod valve or spring or anything else??
:? not a pro just learning thank you very much
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sparky72
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Re: mercury marquis 390

Post by sparky72 »

Would you be able to post a link to the rebuild kit?
Taylor
1972 F250 Ranger XLT 2wd / 8100 GVW / 390 / T18 / 3.73 D60
elvis67
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Re: mercury marquis 390

Post by elvis67 »

I m looking to buy one. not found one yet .want to figure out witch cam I need first.
:? got any suggestion?
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sparky72
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Re: mercury marquis 390

Post by sparky72 »

It depends on what your compression ratio will end up being, which depends a lot on which pistons you end up getting as well as which heads you have. A split pattern RV cam would be good, but short duration cams can cause pinging issues if your CR is too high.

Edit: I'm also pretty sure that '68 was the last year for the 390 in the Marquis :hmm:
Taylor
1972 F250 Ranger XLT 2wd / 8100 GVW / 390 / T18 / 3.73 D60
elvis67
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Re: mercury marquis 390

Post by elvis67 »

http://webresizerhttp://webresizer.com/ ... 9633.34564
I no last year 68 for the 390 but I took it out my self and tag on engine is 69 390 ??? hope you can see pic I send
elvis67
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Re: mercury marquis 390

Post by elvis67 »

result.jpg
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sparky72
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Re: mercury marquis 390

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Cool! Always fun to find oddball stuff like that :thup:
Taylor
1972 F250 Ranger XLT 2wd / 8100 GVW / 390 / T18 / 3.73 D60
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