5.8 Liter Conversion... April 03, 2009, 12:11:59 PM Was just wondering if there was any mounting differences in the 5.0 and the 5.8 Liter.... I know the windsor will fit.... What if any changes do I need to make... I know I'll have to change the ECU ..... Does anyone know? Will my aod hold up to the extra torque.... Quote Selected
5.8 Liter Conversion... Reply #1 – April 03, 2009, 01:25:30 PM If you already have a 5.0 in the car a 351 is a direct bolt in... This is assuming you have a double sump pan already on the larger engine, as the 5.0 pan will not fit a 5.8... The exhaust(headers) and engine brackets are different due to the 5.8 being taller... I believe the 5.0 alternator bracket can be used, but the P/S-A/C bracket is different...Also will need to verify which rotation water pump it uses, the Fox bodied cars all use a reverse rotation pump, at least from '86-up... You'll need 351 swap headers and Stang 5.0 H pipe with a full dual system, if you expect to get any power out of it... Intake is the big issue, except for the '93-'95 Lightning setup(and it's very close), no stock truck intake will fit under the Bird/Coug hood... Doesn't really matter, the 5.8 truck intake is a POS(again Lightning excepted) for making power past 4000 RPM.... Depending on engine components, you'll likely need a Mass Air 5.0 EEC... Assuming a stockish 5.8, I suppose you could use a MAF truck EEC from '94-'96, but like a 5.0 MAF EEC, there will be modifications necessary to your original wiring harness... Quote Selected
5.8 Liter Conversion... Reply #2 – April 03, 2009, 11:48:48 PM You could always get a tune on the stock computer as well. I have heard that you can use 5.0 exhaust but you will need to bend it quite a bit to make it work right. Quote Selected
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