5.0???????

I am planning to do the 5.0 efI aod into my wifes 4 door and I found a 1987 mercury marquis. my question is...... will it be a roller motor or not??? I plan on picking the car up either way($150 and it runs) but the roller would be a bonus....Thanks

 

Im not sure about the marquis, but I thought that 1986 was when ford went to the roller motor.

-Todd

 

yes, its a roller

 

I always thought only the H.O. was the roller?
Dan

 

yes its a roller, but the high output has a differnt cam and fireing order ( among a few other differnces ) but it certainly can be done.. keep us posted..

 

thanks for the info guys

 

hey one more???? I did'nt look to see......will it be speed density or mass air?? I assumed it was spped density but did'nt think of it while i was there.

 

it should be speed dencity. my brother has an 89 that he just rebuilt it was speed dencity

 

ditto on the speed density, I've got a 87 Merc Wagon thats speed density

 

thanks for the info guys......her's will have to wait till I can get mine on the road but I have already been doing the resurch for hers........what can I say a big block in mine and a 4 door with the 5.0EFI FAOD lowerd just a little and set up like a touring car both will be quite the sleeper setup what can I say.........I am the nutt

 

that sounds cool, i cant wait to see a nicely done 4 door..

 

the 5.0 HO can be had for a dime a dozen now adays, and there is a good difference in power between the two, though I am not sure on the Numbers, just my opinion, but I would hold off on that engine, and look for a HO mass air donor.

 

PS, speed density is fine if your not going to hot rod the engine to far.

 

I knew you were out there some where Ken.......And thankyou thats kinda what I was thinking too.

 

Bob,...The only limitation on speed density is the cam timing can't get out of hand to far but there are some cams that will improve the setup. Cam lobe center has to stay at least 114* or higher.
The Map sensor needs to tell the computer about the relative engine load via vacuum level. If a cam change for performance lowers the vacuum level to far the computer input become mismatched from the original engine model.
I run a blower on my SD engine that has a blocking device to the Map sensor when in boost condition. This is a very succesfull setup and make about 300 hp. The setup smoothly makes improved power right off idle even before boost starts at 1800 rpm.
Were into building a 540 hp 351 now for sprint car racing next season so I get to do another new project and have been offered the use of an engine dyno for the final test and tune.
Best...