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Author Topic:   EFI Selection for conversion
4Zsnow
Journeyman

Posts: 51
From: Western Washington, USA
Registered: May 2002

posted 05-09-2002 02:29 PM     Click Here to See the Profile for 4Zsnow     Edit/Delete Message   Reply w/Quote
I am new to this forum and not sure if this is the correct topic section for this question, if not I'm sorry.

I have a short block from a '89 5.0L roller cam. I will be running around 9.5 compression with aluminum heads.
I want to go with a factory efi set up. The question I have is: Mass air is preffered from what I understand, would I be better off finding a mass air system or would I have good results up-grading a speed denisty system? Which would be the easier on pocket book?
I see that the big catalogs sell upgrade parts and wiring kit for s/d systems and s/d systems are easier to come by.

TIA

4Z

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God Bless Big Oil

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I65Stang
Gearhead

Posts: 6575
From: Folsom, CA
Registered: Jun 99

posted 05-09-2002 03:20 PM     Click Here to See the Profile for I65Stang   Click Here to Email I65Stang     Edit/Delete Message   Reply w/Quote
First off, welcome to M&M! Look at the difference in cost between complete mass air setups and s/d setups you find. If the s/d plus the conversion kit is cheaper then I would go that way but I doubt its cheaper. The upgrade parts and wiring kits you are seeing are totally converting the s/d system to mass air so what you end up with is a complete mass air setup (ie, none of the s/d parts are used). If all you can find is s/d setups then get one and the upgrade kit but it will probably cost more than just searching around for a mass air setup.

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Tim

M&M Member #35
1965 Mustang coupe, 200 I6, Holley 2300, Clifford header, true duals w/ 26" Smithys
1988 Mustang GT AOD vert, 15.810 @ 88.871 mph 100% stock w/ no traction
1976 Silverline Comoro 18' trihull ski boat, 188 hp 302 I/O, another toy
https://mustangsandmore.com/ubb/I65Stang.html

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mellowyellow
Gearhead

Posts: 7367
From: So. Fl.
Registered: Aug 2000

posted 05-09-2002 03:37 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Try to start with the mass air, if poss. I bought a mass air set up. From what I've learned, the SD doesn't like upgrades re computer. Have driven speed density cars, and they are peppy but the later ones have more to over for upgrades. Get on the 5.0 site here at M&M. Some sharp guys there that can answer ALL your questions.

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4Zsnow
Journeyman

Posts: 51
From: Western Washington, USA
Registered: May 2002

posted 05-09-2002 03:46 PM     Click Here to See the Profile for 4Zsnow     Edit/Delete Message   Reply w/Quote
I65Stang, mellowyellow

Thank you very much for you time. I am liking this forum already....

m/y I assume you are talking about the '79-'93 must and capri list?

Thanks again folks!

4Z

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God Bless Big Oil

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I65Stang
Gearhead

Posts: 6575
From: Folsom, CA
Registered: Jun 99

posted 05-09-2002 06:11 PM     Click Here to See the Profile for I65Stang   Click Here to Email I65Stang     Edit/Delete Message   Reply w/Quote
Mellow is correct, speed density does not like major changes. The conversion kits in catalogs include a new computer and everything, like I said, it makes it the same as an original mass air car.

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Tim

M&M Member #35
1965 Mustang coupe, 200 I6, Holley 2300, Clifford header, true duals w/ 26" Smithys
1988 Mustang GT AOD vert, 15.810 @ 88.871 mph 100% stock w/ no traction
1976 Silverline Comoro 18' trihull ski boat, 188 hp 302 I/O, another toy
https://mustangsandmore.com/ubb/I65Stang.html

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67coupe
Gearhead

Posts: 491
From: dallas NC usa
Registered: Nov 2000

posted 05-09-2002 11:57 PM     Click Here to See the Profile for 67coupe   Click Here to Email 67coupe     Edit/Delete Message   Reply w/Quote
THE ONLY THING U REALLY HAVE TO CHANGE ON A SD SET UP IS THE COMP AND ADD THE MASS AIR AND HARN U UNHOOK THE MAP VACCUM AND IT BECOMES A BAP SENSOR

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Josh
67 coupe with 351c
94 Explorer
30 model A currently rustbucket
in process 67 convt with efi 5.0 and t5

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4Zsnow
Journeyman

Posts: 51
From: Western Washington, USA
Registered: May 2002

posted 05-10-2002 12:09 AM     Click Here to See the Profile for 4Zsnow     Edit/Delete Message   Reply w/Quote
I'm not to woried about what is involved, just the most cost effective and reliable way.
67coupe,
what did the whole set cost you in the end?

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RickBook
Gearhead

Posts: 144
From: Houston, TX
Registered: Apr 2002

posted 05-10-2002 12:54 AM     Click Here to See the Profile for RickBook     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by 4Zsnow:
what did the whole set cost you in the end?

me thinks it's more like:

"What did the whole thing cost you? Out the a$$ ?"

(sorry, couldn't resist)

[This message has been edited by RickBook (edited 05-10-2002).]

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4Zsnow
Journeyman

Posts: 51
From: Western Washington, USA
Registered: May 2002

posted 05-10-2002 01:14 AM     Click Here to See the Profile for 4Zsnow     Edit/Delete Message   Reply w/Quote
LOL!!!

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67coupe
Gearhead

Posts: 491
From: dallas NC usa
Registered: Nov 2000

posted 05-10-2002 03:06 PM     Click Here to See the Profile for 67coupe   Click Here to Email 67coupe     Edit/Delete Message   Reply w/Quote
not really sure havent done my own car just experince from other cars . im using a 92 harn and comp in my convt lucked up on it but i have seen the mass air harn on here somewhere for bout 35$ 75 for a junk yard comp and whatever mass air u find good luck

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Josh
67 coupe with 351c
94 Explorer
30 model A currently rustbucket
in process 67 convt with efi 5.0 and t5

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4Zsnow
Journeyman

Posts: 51
From: Western Washington, USA
Registered: May 2002

posted 05-10-2002 07:13 PM     Click Here to See the Profile for 4Zsnow     Edit/Delete Message   Reply w/Quote
Thanks man, the hunt continues now that I am armed with INFORMATION.......kinda chilling is'n'tit?

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