289/302 Q's
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From: NE Ga
289/302 Q's
Got a 289 in a '68 fairlane and looking to possible go EFI. I know of a '93 F250 w/ a 302 EFI that runs like a raped ape and got to wondering if the 302 intake will sit on my 289? Anyone ever accomplished this? I'm fairly new to the windsors so gimme all you got. I figured the larger ci injectors for a 302 would feel good on a 289 too.
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From: NE Ga
well that was my next question, I was workin on a 5.8 yesterday and measured the height of the plenum and its around 8" or so. I dont konw that I will have clearance but are there any other factory efi intakes besides the large snorkel type?
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From: NE Ga
yes I know those will work but are there any other factory plenums besides the snorkel overhang type?
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Cargo Master
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From: British Columbia
I'm not too sure about the EFI intake variations but have heard there was a TBird unit that was lower than the standard height ones. Perhaps someone can verify this.
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All the factory small block EFI intakes have the long runners that bend over 1 side or the other, the upside is they really do help broaden the powerband on small displacment motors. You'll have to look at the aftermarket for carb style EFI intakes.
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Yes, T-birds as well. Thats what I was getting with mentioning the mustang, vic, and explorer. Their manifolds are a lot lower than the truck manifolds. T-birds I hear are one of the lowest for height, but the worst for flow. Ive seen many 5.0 stang manifolds on vintage fords. Unless its just the look he doesnt like?
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Now that I know that, what year stang would you guys recommend me pulling the guts on as far as having the fewest amount of complications/sensors to deal with? I looked up parts for a '94 stang and theres a EGR position sensor and a couple of others that didnt' seem 100% necessary unless I ran that system so if I'm thinking I'm gonna go w/ an older system such as one from late 80's to 90-91 era. Anyone got a particularly good year? Also wanting to have a system that only requires one O2 sensor.
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Also, since this is goin in an old fairlane, I'm not exactly going to need a speed sensor either and I'm not gonna have a place to put one so is that gonna mess me up? I don't need it for the speedometer obviously or for shift points so the computer won't miss it being there will it?
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I think your best bet would be a EFI system from an 86-89 CrownVic or Grand Marquis since you are converting over a 289 with the standard firing order. The 86-95 EFI mustangs use the HO or 351w firing order. The Vic/Grand use a speed density system that does not require the use of a vehicle speed sensor VSS (they are equipped with one but not needed for the computer to function properly). Even though the 86-88 mustangs were speed density they still use the HO/351w firing order, are you using a standard 289/302 cam or a 351w cam in your 289? The later 89-95 mass air equipped mustangs computers do require a speed sensor. All these systems have two O2 sensors though, I think the early EFI trucks are the ones that have only one O2 sensor since their injection is batched fired and the CFI cars had one O2.
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From: NE Ga
well my fairlane has an original 90k on it and the motor does not smoke at all. I like the 289 anyways and I figured the little extra gas from the 302 injectors would feel that much better. besides, I don't have time right now to pull the motor. I'm just planning what I'm gonna do w/ it right now so that I don't go buy a new carb and 2 years later convert to efi. See what I mean? I'm tryin to plan this one out.