What to do?
Thread Starter
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Senior User
Joined: Jul 2001
Posts: 119
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What to do?
Question for you all,
I am running a 1991 F150 with a C-6 (was a 5 speed), 10:1 compression, 1965 289 hipo heads ported and polished, 1.6 rr, crane fireball cam 0.484 lift on intake and exhaust 290 advertised duration (220 at 0.050), stock ported intake.
I am still speed density, and I am wondering if I should get a chip, eec tuner, or just swap over to mass air.
any help is greatly appreciated. If you need any more information about the motor let me know.
Thanks
I am running a 1991 F150 with a C-6 (was a 5 speed), 10:1 compression, 1965 289 hipo heads ported and polished, 1.6 rr, crane fireball cam 0.484 lift on intake and exhaust 290 advertised duration (220 at 0.050), stock ported intake.
I am still speed density, and I am wondering if I should get a chip, eec tuner, or just swap over to mass air.
any help is greatly appreciated. If you need any more information about the motor let me know.
Thanks
Thread Starter
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Senior User
Joined: Jul 2001
Posts: 119
Likes: 0
What to do?
It has a little idle surge, but after off idle and up to 4000 rpm it is great, above 4400 it is running lean. The cam is good for 5500 rpm (I know beacuse I had this motor in my stang with a holley 650 db and Performer rpm intake before she got wrecked). Plugs look ok maybe alittle lean but thats about it.
Not sure if I should go to mass air or get a chip burned for the speed density. Can you batch fire into SFI and keep it speed density??
Thanks everyone
Not sure if I should go to mass air or get a chip burned for the speed density. Can you batch fire into SFI and keep it speed density??
Thanks everyone
Post Fiend
Joined: Jan 1997
Posts: 23,165
Likes: 18
From: Enjoying the real world.
What to do?
Quite honestly, I don't like fooling with custom code on 10+ year old vehicles, especially with swapped cams. Its tough for Superchips or Diablo to get it 100% the first burn on a speed density system unless you can provide a dyno chart first. I recommend you change to MAF first.
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