For mass air conversion question?
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Senior Member
Joined: Apr 2001
Posts: 564
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From: Woodbridge,NJ
For mass air conversion question?
Hello,
I recently purchased a Ford cam shaft part # M-6250-A312 (duration: 290 intake/300 exhaust
Duration at .050 in. cam lift: 214 intake/224 exhaust
Gross valve lift: .472 in. intake/.496 in. exhaust
Lobe separation: 107 degrees intake/117 degress exhaust
Peak horsepower rpm: 5,000
Peak torque rpm: 3,500
RPM range: 3,000-6,500)
I was told (By Down's Ford in NJ) that this would be compatible with my setup. I have a 1991 Ford F-250 with a 302 EFI engine, with a C6 Trans and 2200 rpm stall torque converter. I also added a Ford Motorsport mass air conversion kit part # M-9000T50. I had this part installed last week and I'm having the following problems: poor idle performance, stalling at idle and a slight hesitation on the bottom end,Top end screams like a champ though.
My question is, will the computer in the mass air conversion kit accept these new cam specs? Or do I need to get a chip made for the computer? Is there any other advice that you can give to me? Any help that you can give is greatly appreciated. If you need any further information regarding my setup, please feel free to contact me.
Thank you,
Jerry D
I recently purchased a Ford cam shaft part # M-6250-A312 (duration: 290 intake/300 exhaust
Duration at .050 in. cam lift: 214 intake/224 exhaust
Gross valve lift: .472 in. intake/.496 in. exhaust
Lobe separation: 107 degrees intake/117 degress exhaust
Peak horsepower rpm: 5,000
Peak torque rpm: 3,500
RPM range: 3,000-6,500)
I was told (By Down's Ford in NJ) that this would be compatible with my setup. I have a 1991 Ford F-250 with a 302 EFI engine, with a C6 Trans and 2200 rpm stall torque converter. I also added a Ford Motorsport mass air conversion kit part # M-9000T50. I had this part installed last week and I'm having the following problems: poor idle performance, stalling at idle and a slight hesitation on the bottom end,Top end screams like a champ though.
My question is, will the computer in the mass air conversion kit accept these new cam specs? Or do I need to get a chip made for the computer? Is there any other advice that you can give to me? Any help that you can give is greatly appreciated. If you need any further information regarding my setup, please feel free to contact me.
Thank you,
Jerry D
Senior Member
Joined: Apr 2001
Posts: 5,939
Likes: 0
From: Warner Robins, Ga, CSA
devildog: I think you posted this question on the wrong BB......?
Maybe you have a vacuum leak or misconnected vacuum lines??? I would think a chip would be in order. Ask Superchips_Distributor over on the Computer Chips BB--he may be able to help/advise you.
Good luck,
Dan
Maybe you have a vacuum leak or misconnected vacuum lines??? I would think a chip would be in order. Ask Superchips_Distributor over on the Computer Chips BB--he may be able to help/advise you.
Good luck,
Dan
Senior Member
Joined: Oct 1999
Posts: 4,565
Likes: 0
From: NJ
dvldog458 - since you're in Woodbridge NJ give JDM a call, 732-780-0770. I know Jim has done work on Mass air conversion on the older F150's. He'd be able to help you.
... or you post over on the gen1 boards on NLOC:
http://www.nloc.net/forum/forumdisplay.php?forumid=398
and svtperformance:
http://www.svtperformance.com/forums...php?forumid=21
... or you post over on the gen1 boards on NLOC:
http://www.nloc.net/forum/forumdisplay.php?forumid=398
and svtperformance:
http://www.svtperformance.com/forums...php?forumid=21