5.0 HO swap vs. conversion Reply #30 – October 30, 2006, 06:59:56 AM Quote from: thunderjet302;109530Holy :eek: . I guess 5.0s are really durable. are not :D114,xxx miles and i had to rebuild minebetcha cant wait to get the HO in there Quote Selected
5.0 HO swap vs. conversion Reply #31 – October 30, 2006, 08:36:41 PM Quote from: 87thunderbirdBlackJack;110683are not :D114,xxx miles and i had to rebuild minebetcha cant wait to get the HO in thereI'm sure you're an exception. Mine's got nearly 210k with below average maintenance for the first 160k (only enough to keep it running and passing emissions - oil changes every 10,000 miles or so - have the records). How it runs hasn't changed one bit in the last 50,000 I've had it, other than the seized o2 sensors dying, with proper maintenance. Its had some top end noise from one cylinder all this time, yet it keeps going problem free.Not that I wouldn't mind a new motor soon. One quart every 1-2,000 miles (varies...???) for the last 40k and I'm not getting near that much out of the rear main. I figure with a HO with all the underhood upgrades, I should get about the same fuel economy as a stock car with a SO, especially a worn SO. Quote Selected
5.0 HO swap vs. conversion Reply #32 – October 30, 2006, 08:58:52 PM Mine has 127,000 on it with "average" maintenance (oil changes every 5,000-8,000 miles, I have the reciepts) and runs fine. It has a bit of lifter noise when it warms up and a small rear main leak (1 quart every 3,000 miles) and it'll bark the tires and leave a bit'o rubber when I romp on the gas. The only reason that I'm dropping in the GT-40 headed HO is that I need to change the oil pan because the rear plug is stripping, which lead to thoughts of replacing the oil pump and front and rear mains, which lead me to figure what the heck new engine time. Besides who wouldn't like a 240ish hp engine where a 155 hp one used to live ? Quote Selected
yup Reply #33 – October 31, 2006, 03:06:36 PM I have 2 road worthy 88 Tbirds. Both 5.0L- One is red with a 93 mustang HO( E303 cam 70 mm Tbody/ gt 40 heads/ long tube mac headers tremec 5 speed & 4.10s in the rear) the other is a black SO. I drove the red one from Carlisle PA ( 4.5 hrs) and got 22 mpg at 2100rpm. That same day I drove my black one to carlisle with 2.73 gears and got 28 mpg at 16-1800 rpms.Iwas extremely impressed with both. But like the man above said who couldn't use a more powerful engine when the mileage is the same, given the tremendous difference in gearing of my 2 birds.- hence- I'm doing the HO conversion in the black one as we speak! Quote Selected
5.0 HO swap vs. conversion Reply #34 – October 31, 2006, 08:04:30 PM Quote from: thunderjet302;110618So one more quick question. Has anyone used a 5.0 HO speed density computer from a Mark VII with no ill effects? Every time I go to the wreaker I usually see 1-3 Mark VIIs there but no 5.0 Stangs. I know I'd be limited to 110 mph because of the speed limiter but I doubt I'd be driving that fast on public roads anyway. I just want to make sure my cruise control and other systems will work with no problems.The '88 up LSC EEC should be fine... Actually I have one, IF I can ever get it back from my freind who did the HO swap into a '85 F150(its all Stock HO, but has the truck intake with a huge dual T-body)... Gave him two LSC and a '87 Stang EEC and told him to keep whichever one he wanted. I know he's using the 'Stang EEC at the moment... I also have a '88 Stang EEC he's going to try, so if you ain't in a hurry I'll have something.... Quote Selected
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